CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Matrioshka brain - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"e4f82f93-0815-4098-9c39-082206104da9","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Matrioshka_brain","wgTitle":"Matrioshka brain","wgCurRevisionId":1255180683,"wgRevisionId":1255180683,"wgArticleId":709958,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles with short description","Short description is different from Wikidata","Use mdy dates from January 2018","Exploratory engineering","Fiction about stars","Fictional computers","Hypothetical technology","Megastructures"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Matrioshka_brain","wgRelevantArticleId":709958,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[], "wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":10000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q2420453","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false, "wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","mediawiki.page.media","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups", "ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Matrioshka brain - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Matrioshka_brain"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Matrioshka_brain&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Matrioshka_brain"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Matrioshka_brain rootpage-Matrioshka_brain skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Matrioshka+brain" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Matrioshka+brain" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Matrioshka+brain" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Matrioshka+brain" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Concept" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Concept"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Concept</span> </div> </a> <button aria-controls="toc-Concept-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Concept subsection</span> </button> <ul id="toc-Concept-sublist" class="vector-toc-list"> <li id="toc-Jupiter_Brain" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Jupiter_Brain"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Jupiter Brain</span> </div> </a> <ul id="toc-Jupiter_Brain-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Possible_uses" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Possible_uses"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Possible uses</span> </div> </a> <ul id="toc-Possible_uses-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Matrioshka brain</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 16 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-16" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">16 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AF%D9%85%D8%A7%D8%BA_%D9%85%D8%A7%D8%AA%D8%B1%D9%8A%D9%88%D8%B4%D9%83%D8%A7" title="دماغ ماتريوشكا – Arabic" lang="ar" hreflang="ar" data-title="دماغ ماتريوشكا" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Matrjoschka-Gehirn" title="Matrjoschka-Gehirn – German" lang="de" hreflang="de" data-title="Matrjoschka-Gehirn" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%95%CE%B3%CE%BA%CE%AD%CF%86%CE%B1%CE%BB%CE%BF%CF%82_%CE%9C%CE%B1%CF%84%CF%81%CE%B9%CF%8C%CF%83%CE%BA%CE%B1" title="Εγκέφαλος Ματριόσκα – Greek" lang="el" hreflang="el" data-title="Εγκέφαλος Ματριόσκα" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Cerebro_Matrioshka" title="Cerebro Matrioshka – Spanish" lang="es" hreflang="es" data-title="Cerebro Matrioshka" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%BA%D8%B2_%D9%85%D8%A7%D8%AA%D8%B1%D9%88%D8%B4%DA%A9%D8%A7" title="مغز ماتروشکا – Persian" lang="fa" hreflang="fa" data-title="مغز ماتروشکا" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Cerveau_matriochka" title="Cerveau matriochka – French" lang="fr" hreflang="fr" data-title="Cerveau matriochka" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%A7%88%ED%8A%B8%EB%A3%8C%EC%8B%9C%EC%B9%B4_%EB%B8%8C%EB%A0%88%EC%9D%B8" title="마트료시카 브레인 – Korean" lang="ko" hreflang="ko" data-title="마트료시카 브레인" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Cervello_matriosca" title="Cervello matriosca – Italian" lang="it" hreflang="it" data-title="Cervello matriosca" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%95%D7%97_%D7%9E%D7%98%D7%A8%D7%99%D7%95%D7%A9%D7%A7%D7%94" title="מוח מטריושקה – Hebrew" lang="he" hreflang="he" data-title="מוח מטריושקה" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%9E%E3%83%88%E3%83%AA%E3%83%A7%E3%83%BC%E3%82%B7%E3%82%AB%E3%83%BB%E3%83%96%E3%83%AC%E3%82%A4%E3%83%B3" title="マトリョーシカ・ブレイン – Japanese" lang="ja" hreflang="ja" data-title="マトリョーシカ・ブレイン" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/M%C3%B3zg_matrioszka" title="Mózg matrioszka – Polish" lang="pl" hreflang="pl" data-title="Mózg matrioszka" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/C%C3%A9rebro_de_Matrioska" title="Cérebro de Matrioska – Portuguese" lang="pt" hreflang="pt" data-title="Cérebro de Matrioska" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9C%D0%BE%D0%B7%D0%B3-%D0%BC%D0%B0%D1%82%D1%80%D1%91%D1%88%D0%BA%D0%B0" title="Мозг-матрёшка – Russian" lang="ru" hreflang="ru" data-title="Мозг-матрёшка" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Matrioshka-hj%C3%A4rna" title="Matrioshka-hjärna – Swedish" lang="sv" hreflang="sv" data-title="Matrioshka-hjärna" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9C%D0%BE%D0%B7%D0%BE%D0%BA-%D0%BC%D0%B0%D1%82%D1%80%D1%8C%D0%BE%D1%88%D0%BA%D0%B0" title="Мозок-матрьошка – Ukrainian" lang="uk" hreflang="uk" data-title="Мозок-матрьошка" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/N%C3%A3o_Matrioshka" title="Não Matrioshka – Vietnamese" lang="vi" hreflang="vi" data-title="Não Matrioshka" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2420453#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Matrioshka_brain" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Matrioshka_brain" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Matrioshka_brain"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Matrioshka_brain&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Matrioshka_brain&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Matrioshka_brain"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Matrioshka_brain&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Matrioshka_brain&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Matrioshka_brain" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Matrioshka_brain" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Matrioshka_brain&oldid=1255180683" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Matrioshka_brain&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Matrioshka_brain&id=1255180683&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FMatrioshka_brain"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FMatrioshka_brain"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Matrioshka_brain&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Matrioshka_brain&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2420453" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Huge computer powered by a star's energy</div> <p class="mw-empty-elt"> </p><p>A <b>matrioshka brain</b><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-urlMatrioshka_Brain:_How_advanced_civilizations_could_reshape_reality_-_Big_Think_2-0" class="reference"><a href="#cite_note-urlMatrioshka_Brain:_How_advanced_civilizations_could_reshape_reality_-_Big_Think-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> is a hypothetical <a href="/wiki/Megastructure" title="Megastructure">megastructure</a> of immense computational capacity powered by a <a href="/wiki/Dyson_sphere" title="Dyson sphere">Dyson sphere</a>. It was proposed in 1997 by <a href="/w/index.php?title=Robert_J._Bradbury&action=edit&redlink=1" class="new" title="Robert J. Bradbury (page does not exist)">Robert J. Bradbury</a> (1956–2011<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>). It is an example of a class-B <a href="/wiki/Stellar_engine" title="Stellar engine">stellar engine</a>, employing the entire energy output of a star to drive <a href="/wiki/Computer" title="Computer">computer</a> systems.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> This concept derives its name from the nesting Russian <a href="/wiki/Matryoshka_doll" title="Matryoshka doll">matryoshka dolls</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The concept was deployed by Bradbury in the anthology <i>Year Million: Science at the Far Edge of Knowledge</i>.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Concept">Concept</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Matrioshka_brain&action=edit&section=1" title="Edit section: Concept"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Russian-Matroshka.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/71/Russian-Matroshka.jpg/220px-Russian-Matroshka.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/71/Russian-Matroshka.jpg/330px-Russian-Matroshka.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/71/Russian-Matroshka.jpg/440px-Russian-Matroshka.jpg 2x" data-file-width="2560" data-file-height="1920" /></a><figcaption>Matryoshka dolls set in a row</figcaption></figure> <p>The concept of a matrioshka brain comes from the idea of using Dyson spheres to power an enormous, star-sized computer. The term "matrioshka brain" originates from <a href="/wiki/Matryoshka_dolls" class="mw-redirect" title="Matryoshka dolls">matryoshka dolls</a>, which are wooden Russian nesting dolls. Matrioshka brains are composed of several Dyson spheres nested inside one another, the same way that matryoshka dolls are composed of multiple nested doll components. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Dyson_swarm.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Dyson_swarm.png/220px-Dyson_swarm.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Dyson_swarm.png/330px-Dyson_swarm.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Dyson_swarm.png/440px-Dyson_swarm.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>A matrioshka brain would consist of several Dyson spheres (swarms) nested inside each other</figcaption></figure> <p>The innermost Dyson sphere of the matrioshka brain would draw energy directly from the star it surrounds and give off large amounts of <a href="/wiki/Waste_heat" title="Waste heat">waste heat</a> while computing at a high temperature. The next surrounding Dyson sphere would absorb this waste heat and use it for its computational purposes, all while giving off waste heat of its own. This heat would be absorbed by the next sphere, and so on, with each sphere radiating at a lower temperature than the one before it. For this reason, Matrioshka brains with more nested Dyson spheres would tend to be more efficient, as they would waste less heat energy. The inner shells could run at nearly the same temperature as the star itself, while the outer ones would be close to the temperature of interstellar space. The engineering requirements and resources needed for this would be enormous. </p> <div class="mw-heading mw-heading3"><h3 id="Jupiter_Brain">Jupiter Brain</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Matrioshka_brain&action=edit&section=2" title="Edit section: Jupiter Brain"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The term "matrioshka brain" was invented by Robert Bradbury as an alternative to the <b>Jupiter brain</b><sup id="cite_ref-Sandberg_8-0" class="reference"><a href="#cite_note-Sandberg-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>—a concept similar to the matrioshka brain, but on a smaller planetary scale and optimized for minimal signal <a href="/wiki/Propagation_delay" title="Propagation delay">propagation delay</a>. A matrioshka brain design is concentrated on sheer capacity and the maximum amount of energy extracted from its source star, while a Jupiter brain is optimized for computational speed.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Jupiter brain is related to the idea of the hypothetical material <a href="/wiki/Computronium" title="Computronium">computronium</a>, which could be enmassed to sizes of entire planets and even stars.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Possible_uses">Possible uses</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Matrioshka_brain&action=edit&section=3" title="Edit section: Possible uses"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some possible uses of such an immense computational resource have been proposed. </p> <ul><li>An idea suggested by <a href="/wiki/Charles_Stross" title="Charles Stross">Charles Stross</a>, in his novel <a href="/wiki/Accelerando_(book)" class="mw-redirect" title="Accelerando (book)"><i>Accelerando</i></a>, would be to use it to run perfect simulations or <a href="/wiki/Mind_transfer" class="mw-redirect" title="Mind transfer">uploads</a> of human minds into <a href="/wiki/Virtual_reality" title="Virtual reality">virtual reality</a> spaces supported by the matrioshka brain. Stross even went as far as to suggest that a sufficiently powerful species utilizing enough raw processing power could launch attacks upon, and manipulate, the structure of the universe itself.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li> <li>In <i>Godplayers</i> (2005), <a href="/wiki/Damien_Broderick" title="Damien Broderick">Damien Broderick</a> surmises that a matrioshka brain would allow simulating entire alternate universes.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li>The <a href="/wiki/Futures_studies" title="Futures studies">futurist</a> and <a href="/wiki/Transhumanism" title="Transhumanism">transhumanist</a> author <a href="/wiki/Anders_Sandberg" title="Anders Sandberg">Anders Sandberg</a> wrote an essay speculating on implications of computing on the massive scale of machines such as the matrioshka brain, published by the <a href="/wiki/Institute_for_Ethics_and_Emerging_Technologies" title="Institute for Ethics and Emerging Technologies">Institute for Ethics and Emerging Technologies</a>.<sup id="cite_ref-Sandberg_8-1" class="reference"><a href="#cite_note-Sandberg-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Matrioshka brains and other <a href="/wiki/Megastructure" title="Megastructure">megastructures</a> are a common theme in the <a href="/wiki/Science_fiction" title="Science fiction">fictional</a> <a href="/wiki/Orion%27s_Arm" title="Orion's Arm">Orion's Arm</a> universe, where they are used by <a href="/wiki/Superintelligence" title="Superintelligence">superintelligences</a> as processing nodes connected by artificial <a href="/wiki/Wormhole" title="Wormhole">wormholes</a>.</li></ul> <ul><li>The <a href="/wiki/Dennis_E._Taylor" title="Dennis E. Taylor">Dennis E. Taylor</a> novel <a href="/w/index.php?title=Heaven%27s_River&action=edit&redlink=1" class="new" title="Heaven's River (page does not exist)">Heaven's River</a> mentions building a Matrioshka brain for use with replicant and artificial intelligence.</li></ul> <ul><li>In the <a href="/wiki/Evan_Currie" title="Evan Currie">Evan Currie</a> novel, <i>A Seed That Was Sown</i>, the beginning of a new series subsequent to his <i>Odyssey One</i> series, makes use of a Matrioshka Brain as a central threat. Currie routinely uses tech at the edge of human knowledge for story components.</li> <li>In <a href="/wiki/The_Expanse_(novel_series)" title="The Expanse (novel series)"><i>the Expanse</i></a> novel series, a crystalline sphere the size of Jupiter was found in a <a href="/wiki/White_dwarf" title="White dwarf">white dwarf</a> system, dubbed the Adro Diamond. It was built by the ancient Ring Builder civilization as a massive computer and data storage archive. Estimated to be five billion years old, the Adro Diamond orbits a white dwarf star called Adro (with its name derived from the star it orbits), and possesses a machine-perfect smooth surface and is composed of densely packed carbon, making it almost transparent. Seemingly abandoned, the species that built the structure has long been extinct.</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Matrioshka_brain&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Artificial_general_intelligence" title="Artificial general intelligence">Artificial general intelligence</a></li> <li><a href="/wiki/Astronomical_engineering" title="Astronomical engineering">Astronomical engineering</a></li> <li><a href="/wiki/Computronium" title="Computronium">Computronium</a></li> <li><a href="/wiki/Dyson_sphere" title="Dyson sphere">Dyson sphere</a></li> <li><a href="/wiki/Kardashev_scale" title="Kardashev scale">Kardashev scale</a></li> <li><a href="/wiki/Megascale_engineering" title="Megascale engineering">Megascale engineering</a></li> <li><a href="/wiki/Omega_Point" title="Omega Point">Omega Point</a></li> <li><a href="/wiki/Technological_singularity" title="Technological singularity">Technological singularity</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Matrioshka_brain&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFBradbury1999" class="citation web cs1">Bradbury, Robert J. (July 21, 1999). <a rel="nofollow" class="external text" href="https://www.gwern.net/docs/1999-bradbury-matrioshkabrains.pdf">"Matrioshka Brains"</a> <span class="cs1-format">(PDF)</span>. <i>www.gwern.net</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.gwern.net&rft.atitle=Matrioshka+Brains&rft.date=1999-07-21&rft.aulast=Bradbury&rft.aufirst=Robert+J.&rft_id=https%3A%2F%2Fwww.gwern.net%2Fdocs%2F1999-bradbury-matrioshkabrains.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-urlMatrioshka_Brain:_How_advanced_civilizations_could_reshape_reality_-_Big_Think-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-urlMatrioshka_Brain:_How_advanced_civilizations_could_reshape_reality_-_Big_Think_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://bigthink.com/technology-innovation/are-we-living-inside-a-matrioshka-brain-how-advanced-civilizations-could-reshape-reality">"Matrioshka Brain: How advanced civilizations could reshape reality"</a>. <i>Big Think</i>. October 28, 2018.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Big+Think&rft.atitle=Matrioshka+Brain%3A+How+advanced+civilizations+could+reshape+reality&rft.date=2018-10-28&rft_id=https%3A%2F%2Fbigthink.com%2Ftechnology-innovation%2Fare-we-living-inside-a-matrioshka-brain-how-advanced-civilizations-could-reshape-reality&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.sentientdevelopments.com/2011/03/remembering-robert-bradbury.html">Remembering Robert Bradbury</a>, March 6, 2011, by <a href="/wiki/George_Dvorsky" title="George Dvorsky">George Dvorsky</a>, <i>Sentient Developments</i>, 2011, issue 3.</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBradbury" class="citation web cs1">Bradbury, Robert J. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090223093348/http://aeiveos.com:8080/~bradbury/MatrioshkaBrains/index.html">"Matrioshka Brain Home Page"</a>. Archived from <a rel="nofollow" class="external text" href="http://aeiveos.com:8080/~bradbury/MatrioshkaBrains/index.html">the original</a> on February 23, 2009<span class="reference-accessdate">. Retrieved <span class="nowrap">August 28,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Matrioshka+Brain+Home+Page&rft.aulast=Bradbury&rft.aufirst=Robert+J.&rft_id=http%3A%2F%2Faeiveos.com%3A8080%2F~bradbury%2FMatrioshkaBrains%2Findex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.ugcs.caltech.edu/~tanim/classes/ASTR342/notes/basicEnergyII.pdf">"Matrioshka Brains – Some Intermediate Stages in the Evolution of Life"</a> <span class="cs1-format">(PDF)</span>. Department of Astronomy, University of Virginia<span class="reference-accessdate">. Retrieved <span class="nowrap">August 28,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Matrioshka+Brains+%E2%80%93+Some+Intermediate+Stages+in+the+Evolution+of+Life&rft.pub=Department+of+Astronomy%2C+University+of+Virginia&rft_id=http%3A%2F%2Fwww.ugcs.caltech.edu%2F~tanim%2Fclasses%2FASTR342%2Fnotes%2FbasicEnergyII.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLevy2008" class="citation news cs1">Levy, Brett (August 26, 2008). <a rel="nofollow" class="external text" href="https://www.latimes.com/archives/la-xpm-2008-aug-26-et-book26-story.html">"Book Review: 'Year Million: Science at the Far Edge of Knowledge', edited by Damien Broderick"</a>. <i><a href="/wiki/Los_Angeles_Times" title="Los Angeles Times">Los Angeles Times</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">August 28,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Los+Angeles+Times&rft.atitle=Book+Review%3A+%27Year+Million%3A+Science+at+the+Far+Edge+of+Knowledge%27%2C+edited+by+Damien+Broderick&rft.date=2008-08-26&rft.aulast=Levy&rft.aufirst=Brett&rft_id=https%3A%2F%2Fwww.latimes.com%2Farchives%2Fla-xpm-2008-aug-26-et-book26-story.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHorgan2008" class="citation news cs1">Horgan, John (June 13, 2008). <a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB121331769665370259?mod=googlewsj">"The Shape of Things to Come (review of Year Million)"</a>. The Wall Street Journal<span class="reference-accessdate">. Retrieved <span class="nowrap">August 28,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=The+Shape+of+Things+to+Come+%28review+of+Year+Million%29&rft.date=2008-06-13&rft.aulast=Horgan&rft.aufirst=John&rft_id=https%3A%2F%2Fwww.wsj.com%2Farticles%2FSB121331769665370259%3Fmod%3Dgooglewsj&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-Sandberg-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-Sandberg_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Sandberg_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSandberg1999" class="citation journal cs1">Sandberg, Anders (1999). <a rel="nofollow" class="external text" href="https://philpapers.org/rec/SANTPO-19">"The Physics of Information Processing Superobjects: Daily Life Among the Jupiter Brains"</a>. <i>Journal of Evolution and Technology</i>. <b>5</b> (1)<span class="reference-accessdate">. Retrieved <span class="nowrap">April 20,</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Evolution+and+Technology&rft.atitle=The+Physics+of+Information+Processing+Superobjects%3A+Daily+Life+Among+the+Jupiter+Brains&rft.volume=5&rft.issue=1&rft.date=1999&rft.aulast=Sandberg&rft.aufirst=Anders&rft_id=https%3A%2F%2Fphilpapers.org%2Frec%2FSANTPO-19&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20100907060327/http://www.aeiveos.com/~bradbury/JupiterBrains/index.html">"Jupiter & Matrioshka Brains: History & References"</a>. Robert Bradbury. Archived from <a rel="nofollow" class="external text" href="http://www.aeiveos.com/~bradbury/JupiterBrains/index.html">the original</a> on September 7, 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">August 28,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Jupiter+%26+Matrioshka+Brains%3A+History+%26+References&rft.pub=Robert+Bradbury&rft_id=http%3A%2F%2Fwww.aeiveos.com%2F~bradbury%2FJupiterBrains%2Findex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVatinno2010" class="citation journal cs1">Vatinno, Giuseppe (2010). <a rel="nofollow" class="external text" href="https://www.torrossa.com/en/resources/an/2454745">"Per una parusia tecnologica : la singolarità prossima ventura : Ich bin ein singularitarian (Ray Kurzweil)"</a>. <i>Per Una Parusia Tecnologica</i>: 1000–1004. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1400%2F156178">10.1400/156178</a><span class="reference-accessdate">. Retrieved <span class="nowrap">April 20,</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Per+Una+Parusia+Tecnologica&rft.atitle=Per+una+parusia+tecnologica+%3A+la+singolarit%C3%A0+prossima+ventura+%3A+Ich+bin+ein+singularitarian+%28Ray+Kurzweil%29&rft.pages=1000-1004&rft.date=2010&rft_id=info%3Adoi%2F10.1400%2F156178&rft.aulast=Vatinno&rft.aufirst=Giuseppe&rft_id=https%3A%2F%2Fwww.torrossa.com%2Fen%2Fresources%2Fan%2F2454745&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStross2006" class="citation book cs1"><a href="/wiki/Charles_Stross" title="Charles Stross">Stross, Charles</a> (2006). <i><a href="/wiki/Accelerando" title="Accelerando">Accelerando</a></i>. <a href="/wiki/Ace_Books" title="Ace Books">Ace Books</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-441-01415-1" title="Special:BookSources/0-441-01415-1"><bdi>0-441-01415-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Accelerando&rft.pub=Ace+Books&rft.date=2006&rft.isbn=0-441-01415-1&rft.aulast=Stross&rft.aufirst=Charles&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBroderick2005" class="citation book cs1">Broderick, Damien (2005). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/godplayersnovel00dami"><i>Godplayers</i></a></span>. Thunder's Mouth. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-56025-670-2" title="Special:BookSources/1-56025-670-2"><bdi>1-56025-670-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Godplayers&rft.pub=Thunder%27s+Mouth&rft.date=2005&rft.isbn=1-56025-670-2&rft.aulast=Broderick&rft.aufirst=Damien&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fgodplayersnovel00dami&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Matrioshka_brain&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSteve_Bowers2022" class="citation web cs1">Steve Bowers (2022). <a rel="nofollow" class="external text" href="https://www.orionsarm.com/eg-article/4847361494ea5">"Matrioshka Brain"</a>. <i>Encyclopedia Galactica</i>. Orion's Arm Universe Project Inc.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Encyclopedia+Galactica&rft.atitle=Matrioshka+Brain&rft.date=2022&rft.au=Steve+Bowers&rft_id=https%3A%2F%2Fwww.orionsarm.com%2Feg-article%2F4847361494ea5&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTodd_Drashner2007" class="citation web cs1">Todd Drashner (2007). <a rel="nofollow" class="external text" href="https://www.orionsarm.com/eg-article/484737879bb05">"Matrioshka Hypernode"</a>. <i>Encyclopedia Galactica</i>. Orion's Arm Universe Project Inc.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Encyclopedia+Galactica&rft.atitle=Matrioshka+Hypernode&rft.date=2007&rft.au=Todd+Drashner&rft_id=https%3A%2F%2Fwww.orionsarm.com%2Feg-article%2F484737879bb05&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.orionsarm.com/eg-article/4a48cf99d24c8">"Matrioshka Micronode"</a>. Orion's Arm<span class="reference-accessdate">. Retrieved <span class="nowrap">August 28,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Matrioshka+Micronode&rft.pub=Orion%27s+Arm&rft_id=http%3A%2F%2Fwww.orionsarm.com%2Feg-article%2F4a48cf99d24c8&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMatrioshka+brain" class="Z3988"></span></li> <li><a rel="nofollow" class="external text" href="https://medium.com/@thebojda/megaminds-abstract-evolution-and-the-consistency-machine-d2915a719443">Megaminds, abstract evolution and the consistency machine, aka how to build simulated realities</a>.</li> <li>Gorman, A. C. (2014) <a rel="nofollow" class="external text" href="https://www.researchgate.net/publication/275025892_The_Anthropocene_in_the_Solar_System">"The Anthropocene in the Solar System"</a>. Journal of Contemporary Archaeology.</li> <li><a rel="nofollow" class="external text" href="https://www.sciencealert.com/wildly-fun-new-paper-compares-the-human-brain-to-the-structure-of-the-universe">Human Brain and Universe – Similar Shapes?</a>, <a href="/wiki/ScienceAlert" title="ScienceAlert">ScienceAlert</a> (2020).</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"></div><div role="navigation" class="navbox" aria-labelledby="Science_fiction" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Science_fiction" title="Template:Science fiction"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Science_fiction" title="Template talk:Science fiction"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Science_fiction" title="Special:EditPage/Template:Science fiction"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Science_fiction" style="font-size:114%;margin:0 4em"><a href="/wiki/Science_fiction" title="Science fiction">Science fiction</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Outline_of_science_fiction" title="Outline of science fiction">Outline</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_science-fiction_authors" title="List of science-fiction authors">Authors</a></li> <li><a href="/wiki/Definitions_of_science_fiction" title="Definitions of science fiction">Definitions</a> <ul><li><a href="/wiki/Anthropological_science_fiction" title="Anthropological science fiction">Anthropological</a></li> <li><a href="/wiki/Hard_science_fiction" title="Hard science fiction">Hard</a></li> <li><a href="/wiki/Scientific_romance" title="Scientific romance">Scientific romance</a></li> <li><a href="/wiki/Soft_science_fiction" title="Soft science fiction">Soft</a></li></ul></li> <li><a href="/wiki/Golden_Age_of_Science_Fiction" title="Golden Age of Science Fiction">Golden Age</a></li> <li><a href="/wiki/History_of_science_fiction" title="History of science fiction">History</a></li> <li><a href="/wiki/New_Wave_science_fiction" class="mw-redirect" title="New Wave science fiction">New Wave</a></li> <li><a href="/wiki/Timeline_of_science_fiction" title="Timeline of science fiction">Timeline</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Subgenres</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apocalyptic_and_post-apocalyptic_fiction" title="Apocalyptic and post-apocalyptic fiction">Apocalyptic and post-apocalyptic</a></li> <li><a href="/wiki/Science_fiction_comedy" title="Science fiction comedy">Comedy</a> <ul><li><a href="/wiki/List_of_science_fiction_sitcoms" class="mw-redirect" title="List of science fiction sitcoms">Sitcoms</a></li></ul></li> <li><a href="/wiki/Feminist_science_fiction" title="Feminist science fiction">Feminist</a></li> <li><a href="/wiki/Grimdark" title="Grimdark">Grimdark</a></li> <li><a href="/wiki/Inner_space_(science_fiction)" title="Inner space (science fiction)">Inner space</a></li> <li><a href="/wiki/Mecha" title="Mecha">Mecha</a> <ul><li><a href="/wiki/Mecha_anime_and_manga" title="Mecha anime and manga">Anime and manga</a></li></ul></li> <li><a href="/wiki/Mundane_science_fiction" title="Mundane science fiction">Mundane</a></li> <li><a href="/wiki/Space_warfare_in_science_fiction" title="Space warfare in science fiction">Space warfare</a> <ul><li><a href="/wiki/Military_science_fiction" title="Military science fiction">Military</a></li> <li><a href="/wiki/Space_opera" title="Space opera">Space opera</a></li> <li><a href="/wiki/Space_Western" title="Space Western">Space Western</a></li></ul></li> <li><a href="/wiki/Parallel_universes_in_fiction" title="Parallel universes in fiction">Parallel universes</a> <ul><li><a href="/wiki/Isekai" title="Isekai">Isekai</a></li></ul></li> <li><a href="/wiki/Science_fantasy" title="Science fantasy">Science fantasy</a> <ul><li><a href="/wiki/Dying_Earth_(genre)" title="Dying Earth (genre)">Dying Earth</a></li> <li><a href="/wiki/Planetary_romance" title="Planetary romance">Planetary romance</a></li> <li><a href="/wiki/Superhero_fiction" title="Superhero fiction">Superhero</a></li> <li><a href="/wiki/Sword_and_planet" class="mw-redirect" title="Sword and planet">Sword and planet</a></li></ul></li> <li><a href="/wiki/Social_science_fiction" title="Social science fiction">Social</a> <ul><li><a href="/wiki/Climate_fiction" title="Climate fiction">Climate fiction</a></li> <li><a href="/wiki/Christian_science_fiction" title="Christian science fiction">Christian</a></li> <li><a href="/wiki/Libertarian_science_fiction" title="Libertarian science fiction">Libertarian</a></li> <li><a href="/wiki/Utopian_and_dystopian_fiction" title="Utopian and dystopian fiction">Utopian and dystopian</a></li></ul></li> <li><a href="/wiki/Tech_noir" title="Tech noir">Tech noir</a> <ul><li><a href="/wiki/Spy-Fi_(subgenre)" class="mw-redirect" title="Spy-Fi (subgenre)">Spy-Fi</a></li> <li><a href="/wiki/Techno-thriller" title="Techno-thriller">Techno-thriller</a></li></ul></li> <li><a href="/wiki/Tokusatsu" title="Tokusatsu">Tokusatsu</a> <ul><li><a href="/wiki/Kaiju" title="Kaiju">Kaiju</a></li></ul></li> <li><a href="/wiki/List_of_underwater_science_fiction_works" title="List of underwater science fiction works">Underwater</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cyberpunk_derivatives" title="Cyberpunk derivatives">Cyberpunk derivatives</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cyberpunk" title="Cyberpunk">Cyberpunk</a> <ul><li><a href="/wiki/Japanese_cyberpunk" title="Japanese cyberpunk">Japanese</a></li></ul></li> <li><a href="/wiki/Biopunk" title="Biopunk">Biopunk</a></li> <li><a href="/wiki/Dieselpunk" title="Dieselpunk">Dieselpunk</a></li> <li><a href="/wiki/Nanopunk" title="Nanopunk">Nanopunk</a></li> <li><a href="/wiki/Solarpunk" title="Solarpunk">Solarpunk</a></li> <li><a href="/wiki/Steampunk" title="Steampunk">Steampunk</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Culture</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Science_fiction_convention" title="Science fiction convention">Conventions</a></li> <li><a href="/wiki/Science_fiction_fandom" title="Science fiction fandom">Fandom</a></li> <li><a href="/wiki/Science-fiction_fanzine" title="Science-fiction fanzine">Fanzines</a></li> <li><a href="/wiki/Internet_Speculative_Fiction_Database" title="Internet Speculative Fiction Database">ISFDB</a></li> <li><a href="/wiki/Science_fiction_libraries_and_museums" title="Science fiction libraries and museums">Libraries and museums</a></li> <li><a href="/wiki/EMP_Museum#Science_Fiction_Museum" class="mw-redirect" title="EMP Museum">Science Fiction Museum</a></li> <li><a href="/wiki/Science_fiction_studies" title="Science fiction studies">Studies</a></li> <li><a href="/wiki/Women_in_speculative_fiction" title="Women in speculative fiction">Women in SF</a></li> <li><a href="/wiki/Worldcon" title="Worldcon">Worldcon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Region</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Australian_science_fiction" title="Australian science fiction">Australian</a></li> <li><a href="/wiki/Bengali_science_fiction" title="Bengali science fiction">Bengali</a></li> <li><a href="/wiki/Brazilian_science_fiction" title="Brazilian science fiction">Brazilian</a></li> <li><a href="/wiki/Canadian_science_fiction" title="Canadian science fiction">Canadian</a></li> <li><a href="/wiki/Chilean_science_fiction" title="Chilean science fiction">Chilean</a></li> <li><a href="/wiki/Chinese_science_fiction" title="Chinese science fiction">Chinese</a></li> <li><a href="/wiki/Croatian_science_fiction" title="Croatian science fiction">Croatian</a></li> <li><a href="/wiki/Czech_science_fiction_and_fantasy" class="mw-redirect" title="Czech science fiction and fantasy">Czech</a></li> <li><a href="/wiki/Estonian_science_fiction" title="Estonian science fiction">Estonian</a></li> <li><a href="/wiki/French_science_fiction" title="French science fiction">French</a></li> <li><a href="/wiki/Hungarian_science_fiction" title="Hungarian science fiction">Hungarian</a></li> <li><a href="/wiki/Japanese_science_fiction" title="Japanese science fiction">Japanese</a></li> <li><a href="/wiki/Norwegian_science_fiction" title="Norwegian science fiction">Norwegian</a></li> <li><a href="/wiki/Science_fiction_and_fantasy_in_Poland" class="mw-redirect" title="Science fiction and fantasy in Poland">Polish</a></li> <li><a href="/wiki/Romanian_science_fiction" title="Romanian science fiction">Romanian</a></li> <li><a href="/wiki/Russian_science_fiction_and_fantasy" class="mw-redirect" title="Russian science fiction and fantasy">Russian</a></li> <li><a href="/wiki/Serbian_science_fiction" title="Serbian science fiction">Serbian</a></li> <li><a href="/wiki/Spanish_science_fiction" title="Spanish science fiction">Spanish</a></li> <li><a href="/wiki/Yugoslav_science_fiction" title="Yugoslav science fiction">Yugoslav</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Awards</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Cinematic</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Jules_Verne_Awards" title="Jules Verne Awards">Jules Verne</a></li> <li><a href="/wiki/Saturn_Awards" title="Saturn Awards">Saturn</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Literary, art,<br />and audio</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Astounding_Award_for_Best_New_Writer" title="Astounding Award for Best New Writer">Astounding</a></li> <li><a href="/wiki/Aurealis_Award" title="Aurealis Award">Aurealis</a></li> <li><a href="/wiki/BSFA_Award" title="BSFA Award">BSFA</a></li> <li><a href="/wiki/John_W._Campbell_Memorial_Award_for_Best_Science_Fiction_Novel" title="John W. Campbell Memorial Award for Best Science Fiction Novel">Campbell Memorial</a></li> <li><a href="/wiki/Chesley_Awards" title="Chesley Awards">Chesley</a></li> <li><a href="/wiki/Arthur_C._Clarke_Award" title="Arthur C. Clarke Award">Clarke</a></li> <li><a href="/wiki/Compton_Crook_Award" title="Compton Crook Award">Crook</a></li> <li><a href="/wiki/Deutscher_Science_Fiction_Preis" title="Deutscher Science Fiction Preis">Deutscher</a></li> <li><a href="/wiki/Philip_K._Dick_Award" title="Philip K. Dick Award">Dick</a></li> <li><a href="/wiki/Ditmar_Award" title="Ditmar Award">Ditmar</a></li> <li><a href="/wiki/Endeavour_Award" title="Endeavour Award">Endeavor</a></li> <li><a href="/wiki/FantLab%27s_Book_of_the_Year_Award" title="FantLab's Book of the Year Award">FantLab</a></li> <li><a href="/wiki/Galaxy_Award_(China)" title="Galaxy Award (China)">Galaxy</a></li> <li><a href="/wiki/Jack_Gaughan_Award" title="Jack Gaughan Award">Gaughan</a></li> <li><a href="/wiki/Geffen_Award" title="Geffen Award">Geffen</a></li> <li><a href="/wiki/Golden_Duck_Award" title="Golden Duck Award">Golden Duck</a></li> <li><a href="/wiki/Damon_Knight_Memorial_Grand_Master_Award" title="Damon Knight Memorial Grand Master Award">Grand Master</a></li> <li><a href="/wiki/Grand_prix_de_l%27Imaginaire" title="Grand prix de l'Imaginaire">Grand Prix</a></li> <li><a href="/wiki/Paul_Harland_Prize" title="Paul Harland Prize">Harland</a></li> <li><a href="/wiki/Robert_A._Heinlein_Award" title="Robert A. Heinlein Award">Heinlein</a></li> <li><a href="/wiki/Premio_Ignotus" title="Premio Ignotus">Ignotus</a></li> <li><a href="/wiki/Kitschies" title="Kitschies">Kitschies</a></li> <li><a href="/wiki/List_of_Lambda_Literary_Awards_winners_and_nominees_for_science_fiction,_fantasy_and_horror" class="mw-redirect" title="List of Lambda Literary Awards winners and nominees for science fiction, fantasy and horror">Lambda</a></li> <li><a href="/wiki/Kurd_La%C3%9Fwitz_Award" title="Kurd Laßwitz Award">Laßwitz</a></li> <li><a href="/wiki/Locus_Award" title="Locus Award">Locus</a></li> <li><a href="/wiki/Nautilus_Award" title="Nautilus Award">Nautilus</a></li> <li><a href="/wiki/Nebula_Award" title="Nebula Award">Nebula</a></li> <li><a href="/wiki/Nommo_Awards" title="Nommo Awards">Nommo</a></li> <li><a href="/wiki/Andre_Norton_Award" title="Andre Norton Award">Norton</a></li> <li><a href="/wiki/Parsec_Awards" title="Parsec Awards">Parsec</a></li> <li><a href="/wiki/Prometheus_Award" title="Prometheus Award">Prometheus</a></li> <li><a href="/wiki/Rhysling_Award" title="Rhysling Award">Rhysling</a></li> <li><a href="/wiki/SFERA_Award" title="SFERA Award">SFERA</a></li> <li><a href="/wiki/Sidewise_Award_for_Alternate_History" title="Sidewise Award for Alternate History">Sidewise</a></li> <li><a href="/wiki/Edward_E._Smith_Memorial_Award" title="Edward E. Smith Memorial Award">Skylark</a></li> <li><a href="/wiki/Theodore_Sturgeon_Award" title="Theodore Sturgeon Award">Sturgeon</a></li> <li><a href="/wiki/Sunburst_Award" title="Sunburst Award">Sunburst</a></li> <li><a href="/wiki/T%C3%A4htivaeltaja_Award" title="Tähtivaeltaja Award">Tähtivaeltaja</a></li> <li><a href="/wiki/TBD_Science_Fiction_Story_Award" title="TBD Science Fiction Story Award">TBD</a></li> <li><a href="/wiki/James_Tiptree_Jr._Award" class="mw-redirect" title="James Tiptree Jr. Award">Tiptree</a></li> <li><a href="/wiki/Prix_Apollo_Award" title="Prix Apollo Award">Tour-Apollo</a></li> <li><a href="/wiki/Science_Fiction_%26_Fantasy_Translation_Awards" title="Science Fiction & Fantasy Translation Awards">Translation</a></li> <li><a href="/wiki/Urania_Award" title="Urania Award">Urania</a></li> <li><a href="/wiki/Sir_Julius_Vogel_Award" title="Sir Julius Vogel Award">Vogel</a></li> <li><a href="/wiki/Writers_of_the_Future" class="mw-redirect" title="Writers of the Future">Writers and Illustrators of the Future</a></li> <li><a href="/wiki/Janusz_A._Zajdel_Award" title="Janusz A. Zajdel Award">Zajdel</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Multimedia</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aurora_Awards" title="Aurora Awards">Aurora</a></li> <li><a href="/wiki/Chandler_Award" title="Chandler Award">Chandler</a></li> <li><a href="/wiki/Dragon_Awards" title="Dragon Awards">Dragon</a></li> <li><a href="/wiki/Hugo_Award" title="Hugo Award">Hugo</a></li> <li><a href="/wiki/Seiun_Award" title="Seiun Award">Seiun</a></li> <li><a href="/wiki/Gaylactic_Spectrum_Awards" title="Gaylactic Spectrum Awards">Spectrum</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Media</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Science_fiction_film" title="Science fiction film">Film</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/History_of_science_fiction_films" title="History of science fiction films">Film history</a></li> <li><a href="/wiki/Lists_of_science_fiction_films" title="Lists of science fiction films">Films</a></li> <li><a href="/wiki/Science_fiction_films_in_India" title="Science fiction films in India">Indian</a></li> <li><a href="/wiki/Japanese_science_fiction" title="Japanese science fiction">Japanese</a> <ul><li><a href="/wiki/List_of_science_fiction_anime" title="List of science fiction anime">Anime</a></li> <li><a href="/wiki/Tokusatsu" title="Tokusatsu">Tokusatsu</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Literature</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Science_fiction_comics" title="Science fiction comics">Comics</a></li> <li><a href="/wiki/Science_fiction_magazine" title="Science fiction magazine">Magazines</a></li> <li><a href="/wiki/List_of_science_fiction_novels" title="List of science fiction novels">Novels</a></li> <li><a href="/wiki/List_of_science_fiction_publishers" title="List of science fiction publishers">Publishers</a></li> <li><a href="/wiki/List_of_science_fiction_short_stories" title="List of science fiction short stories">Short stories</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Stage</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Science_fiction_opera" title="Science fiction opera">Opera</a></li> <li><a href="/wiki/Science_fiction_theatre" title="Science fiction theatre">Theatre</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Science_fiction_on_television" title="Science fiction on television">Television</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_science_fiction_television_programs" title="List of science fiction television programs">List of TV shows</a></li> <li><a href="/wiki/Australian_science_fiction_television" title="Australian science fiction television">Australasian</a></li> <li><a href="/wiki/British_television_science_fiction" title="British television science fiction">British</a></li> <li><a href="/wiki/Canadian_science_fiction_television" title="Canadian science fiction television">Canadian</a></li> <li><a href="/wiki/Science_fiction_on_television#Continental_European_science_fiction_series" title="Science fiction on television">European</a></li> <li><a href="/wiki/Japanese_science_fiction" title="Japanese science fiction">Japanese</a> <ul><li><a href="/wiki/List_of_science_fiction_anime" title="List of science fiction anime">Anime</a></li> <li><a href="/wiki/Tokusatsu" title="Tokusatsu">Live-action</a></li></ul></li> <li><a href="/wiki/U.S._television_science_fiction" title="U.S. television science fiction">U.S.</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_science_fiction_themes" title="List of science fiction themes">Themes</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Space_architecture" title="Space architecture">Architectural</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Space_colonization" title="Space colonization">Colonization</a></li> <li><a href="/wiki/Dyson_sphere" title="Dyson sphere">Dyson sphere</a></li> <li><a class="mw-selflink selflink">Matrioshka brain</a></li> <li><a href="/wiki/Space_stations_and_habitats_in_fiction" title="Space stations and habitats in fiction">Space stations and habitats</a></li> <li><a href="/wiki/Stellar_engine" title="Stellar engine">Stellar engine</a></li> <li><a href="/wiki/Terraforming_in_popular_culture" title="Terraforming in popular culture">Terraforming</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Biology_in_fiction" title="Biology in fiction">Biological</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Biological_warfare_in_popular_culture" title="Biological warfare in popular culture">Biological warfare</a></li> <li><a href="/wiki/Energy_being" title="Energy being">Energy being</a></li> <li><a href="/wiki/Evolution_in_fiction" title="Evolution in fiction">Evolution</a></li> <li><a href="/wiki/Extraterrestrials_in_fiction" title="Extraterrestrials in fiction">Extraterrestrials</a> <ul><li><a href="/wiki/Lists_of_fictional_extraterrestrials" title="Lists of fictional extraterrestrials">List</a></li></ul></li> <li><a href="/wiki/Gender_in_speculative_fiction" title="Gender in speculative fiction">Gender</a></li> <li><a href="/wiki/Genetic_engineering_in_science_fiction" class="mw-redirect" title="Genetic engineering in science fiction">Genetic engineering</a></li> <li><a href="/wiki/Invisibility_in_fiction" title="Invisibility in fiction">Invisibility</a></li> <li><a href="/wiki/Nanotechnology_in_fiction" title="Nanotechnology in fiction">Nanotechnology</a></li> <li><a href="/wiki/Organ_transplantation_in_fiction" title="Organ transplantation in fiction">Organ transplantation</a></li> <li><a href="/wiki/Parasites_in_fiction" title="Parasites in fiction">Parasites</a></li> <li><a href="/wiki/Prosthetics_in_fiction" title="Prosthetics in fiction">Prosthetics</a></li> <li><a href="/wiki/Sex_and_sexuality_in_speculative_fiction" title="Sex and sexuality in speculative fiction">Sex and sexuality</a></li> <li><a href="/wiki/Symbiosis_in_fiction" title="Symbiosis in fiction">Symbiosis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Physical</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ansible" title="Ansible">Ansible</a></li> <li><a href="/wiki/Black_holes_in_fiction" title="Black holes in fiction">Black holes</a></li> <li><a href="/wiki/Extrasolar_planets_in_fiction" title="Extrasolar planets in fiction">Extrasolar planets</a></li> <li><a href="/wiki/Force_field_(technology)" title="Force field (technology)">Force field</a></li> <li><a href="/wiki/Hyperspace" title="Hyperspace">Hyperspace</a></li> <li><a href="/wiki/Inertialess_drive" class="mw-redirect" title="Inertialess drive">Inertialess</a></li> <li><a href="/wiki/Multiverse" title="Multiverse">Multiverse</a></li> <li><a href="/wiki/Parallel_universes_in_fiction" title="Parallel universes in fiction">Parallel universes</a></li> <li><a href="/wiki/Portable_hole" title="Portable hole">Portable hole</a></li> <li><a href="/wiki/Space_travel_in_science_fiction" title="Space travel in science fiction">Space travel</a></li> <li><a href="/wiki/Stargate_(device)" title="Stargate (device)">Stargate</a></li> <li><a href="/wiki/Stars_in_fiction" title="Stars in fiction">Stars</a></li> <li><a href="/wiki/Teleportation_in_fiction" title="Teleportation in fiction">Teleportation</a></li> <li><a href="/wiki/Time_travel_in_fiction" title="Time travel in fiction">Time travel</a> (<a href="/wiki/Time_viewer" title="Time viewer">Viewer</a>)</li> <li><a href="/wiki/Warp_drive" title="Warp drive">Warp drive</a></li> <li><a href="/wiki/Wormholes_in_fiction" title="Wormholes in fiction">Wormhole</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Psychological</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Group_mind_(science_fiction)" title="Group mind (science fiction)">Group mind</a></li> <li><a href="/wiki/Mind_uploading_in_fiction" title="Mind uploading in fiction">Mind uploading</a></li> <li><a href="/wiki/Psionics" title="Psionics">Psionics</a></li> <li><a href="/wiki/Simulated_consciousness_in_fiction" title="Simulated consciousness in fiction">Simulated consciousness</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Social</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Africanfuturism" title="Africanfuturism">Africanfuturism</a></li> <li><a href="/wiki/Afrofuturism" title="Afrofuturism">Afrofuturism</a></li> <li><a href="/wiki/Alien_invasion" title="Alien invasion">Alien invasion</a></li> <li><a href="/wiki/Alien_language" title="Alien language">Alien language</a></li> <li><a href="/wiki/Ancient_astronauts_in_popular_culture" title="Ancient astronauts in popular culture">Ancient astronauts</a></li> <li><a href="/wiki/Black_science_fiction" title="Black science fiction">Black</a></li> <li><a href="/wiki/Evil_corporation" title="Evil corporation">Evil corporation</a></li> <li><a href="/wiki/First_contact_(science_fiction)" title="First contact (science fiction)">First contact</a></li> <li><a href="/wiki/Frankenstein_complex" title="Frankenstein complex">Frankenstein complex</a></li> <li><a href="/wiki/Galactic_empire" title="Galactic empire">Galactic empire</a></li> <li><a href="/wiki/LGBT_themes_in_speculative_fiction" title="LGBT themes in speculative fiction">LGBT</a></li> <li><a href="/wiki/Message_from_space_(science_fiction)" title="Message from space (science fiction)">Message from space</a></li> <li><a href="/wiki/Transhumanism_in_fiction" title="Transhumanism in fiction">Transhumanism</a></li> <li><a href="/wiki/Uplift_(science_fiction)" title="Uplift (science fiction)">Uplift</a></li> <li><a href="/wiki/Xenoarchaeology" title="Xenoarchaeology">Xenoarchaeology</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technological</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Artificial_intelligence_in_fiction" title="Artificial intelligence in fiction">Artificial intelligence</a> <ul><li><a href="/wiki/AI_takeover_in_popular_culture" title="AI takeover in popular culture">AI takeover</a></li></ul></li> <li><a href="/wiki/Astronomical_engineering" title="Astronomical engineering">Astroengineering</a></li> <li><a href="/wiki/Holography_in_fiction" title="Holography in fiction">Holography</a></li> <li><a href="/wiki/List_of_fictional_robots_and_androids" title="List of fictional robots and androids">Robots</a> and <a href="/wiki/Cyborgs_in_fiction" class="mw-redirect" title="Cyborgs in fiction">Cyborgs</a></li> <li><a href="/wiki/Self-replicating_machines_in_fiction" class="mw-redirect" title="Self-replicating machines in fiction">Self-replicating machines</a></li> <li><a href="/wiki/Simulated_reality" title="Simulated reality">Simulated reality</a></li> <li><a href="/wiki/List_of_fictional_spacecraft" title="List of fictional spacecraft">Spacecraft</a></li> <li><a href="/wiki/Tachyons_in_fiction" title="Tachyons in fiction">Tachyons</a></li> <li><a href="/wiki/Weapons_in_science_fiction" title="Weapons in science fiction">Weapons</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Religious</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Christian_science_fiction" title="Christian science fiction">Christian science fiction</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alternate_history" title="Alternate history">Alternate history</a></li> <li><a href="/wiki/Fantasy" title="Fantasy">Fantasy</a></li> <li><a href="/wiki/Lists_of_fictional_astronauts" title="Lists of fictional astronauts">Fictional astronauts</a></li> <li><a href="/wiki/Fictional_technology" class="mw-redirect" title="Fictional technology">Fictional technology</a></li> <li><a href="/wiki/Future_history" title="Future history">Future history</a></li> <li><a href="/wiki/Horror_fiction" title="Horror fiction">Horror</a></li> <li><a href="/wiki/Magic_realism" class="mw-redirect" title="Magic realism">Magic realism</a></li> <li><a href="/wiki/Museum_of_Science_Fiction" title="Museum of Science Fiction">Museum of Science Fiction</a></li> <li><a href="/wiki/Rubber_science" title="Rubber science">Rubber science</a></li> <li><a href="/wiki/Science_and_technology_studies" title="Science and technology studies">Science and technology studies</a></li> <li><a href="/wiki/Sense_of_wonder" title="Sense of wonder">Sense of wonder</a></li> <li><a href="/wiki/Speculative_fiction" title="Speculative fiction">Speculative fiction</a></li> <li><a href="/wiki/Supernatural_fiction" title="Supernatural fiction">Supernatural</a></li> <li><a href="/wiki/Technology_and_society" title="Technology and society">Technology and society</a></li> <li><a href="/wiki/Weird_fiction" title="Weird fiction">Weird</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><div class="hlist"><ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Science_fiction" title="Category:Science fiction">Category</a></li><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <a href="/wiki/Portal:Speculative_fiction/Science_fiction" title="Portal:Speculative fiction/Science fiction">Portal</a></li></ul></div></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Matrioshka_brain&oldid=1255180683">https://en.wikipedia.org/w/index.php?title=Matrioshka_brain&oldid=1255180683</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Exploratory_engineering" title="Category:Exploratory engineering">Exploratory engineering</a></li><li><a href="/wiki/Category:Fiction_about_stars" title="Category:Fiction about stars">Fiction about stars</a></li><li><a href="/wiki/Category:Fictional_computers" title="Category:Fictional computers">Fictional computers</a></li><li><a href="/wiki/Category:Hypothetical_technology" title="Category:Hypothetical technology">Hypothetical technology</a></li><li><a href="/wiki/Category:Megastructures" title="Category:Megastructures">Megastructures</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Use_mdy_dates_from_January_2018" title="Category:Use mdy dates from January 2018">Use mdy dates from January 2018</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 3 November 2024, at 15:49<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Matrioshka_brain&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-mf4ts","wgBackendResponseTime":205,"wgPageParseReport":{"limitreport":{"cputime":"0.343","walltime":"0.431","ppvisitednodes":{"value":1167,"limit":1000000},"postexpandincludesize":{"value":102909,"limit":2097152},"templateargumentsize":{"value":748,"limit":2097152},"expansiondepth":{"value":12,"limit":100},"expensivefunctioncount":{"value":2,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":56762,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 319.815 1 -total"," 40.55% 129.696 1 Template:Reflist"," 31.22% 99.840 6 Template:Navbox"," 28.58% 91.406 1 Template:Science_fiction"," 27.31% 87.353 8 Template:Cite_web"," 20.08% 64.212 1 Template:Short_description"," 11.08% 35.445 2 Template:Pagetype"," 10.50% 33.596 1 Template:Hlist"," 5.53% 17.673 4 Template:Main_other"," 4.77% 15.258 1 Template:SDcat"]},"scribunto":{"limitreport-timeusage":{"value":"0.194","limit":"10.000"},"limitreport-memusage":{"value":4919051,"limit":52428800}},"cachereport":{"origin":"mw-api-ext.codfw.main-7556f8b5dd-8mvns","timestamp":"20241122142354","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Matrioshka brain","url":"https:\/\/en.wikipedia.org\/wiki\/Matrioshka_brain","sameAs":"http:\/\/www.wikidata.org\/entity\/Q2420453","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q2420453","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2004-06-08T18:44:46Z","dateModified":"2024-11-03T15:49:24Z","headline":"hypothetical computer system"}</script> </body> </html>