1636: XKCD Stack - Revision history

140.228.247.165: /* Explanation */ Another reason for the stack to say blocked by adblocker.

2026-04-22T13:43:10Z

‎Explanation: Another reason for the stack to say blocked by adblocker.

Explainyourself: Added stuff for archive.org

2025-11-08T02:00:29Z

Added stuff for archive.org

CalibansCreations: /* Layers */

2025-03-20T12:09:39Z

‎Layers

172.71.241.110: Undo revision 368488 by 162.158.114.155 (talk) Redlinked Category

2025-03-10T05:18:46Z

Undo revision 368488 by 162.158.114.155 (talk) Redlinked Category

162.158.114.155 at 02:40, 10 March 2025

2025-03-10T02:40:24Z

162.158.103.188: /* Layers */

2025-03-03T20:30:08Z

‎Layers

Maplestrip: /* Title text */ Added missing joke.

2024-02-29T13:45:36Z

‎Title text: Added missing joke.

Maplestrip: /* Title text */

2024-02-29T13:38:25Z

‎Title text

Lettherebedarklight: /* Explanation */ cleanup

2024-01-10T12:24:13Z

‎Explanation: cleanup

172.70.211.61: fix errors

2023-10-04T16:32:49Z

fix errors

@@ Line 29: / Line 29: @@
 :*An ad is actually an integral part of the stack. Some sites make ads an integral part of the site content, so that users with ad blocking software will be forced to disable ad blocking to be able to properly interact with the site. Usually, in real life, this is not really a case of ads being part of the site, only that the site artificially refuses to work until it has some confirmation that ads have been properly loaded in the client side (by means of some script within the ads which sends the confirmation to the server).
 :*Ad blocking software has misidentified that portion of the stack as an ad, when in fact it is not (i.e. a false positive). This happens in real life, and it is a common source of great pain for the owner of the site which is being misidentified as an ad.
 ;MongoDB/Excel
 :{{w|MongoDB}} is a modern {{w|NoSQL}} {{w|Database|database}} system, {{w|Microsoft Excel}} is a {{w|Spreadsheet|spreadsheet}} program from Microsoft, which is sometimes used as a database system (rarely a good choice).

@@ Line 19: / Line 19: @@
 :In recent years it has become more difficult to run {{w|Java applet|Java applets}} in several browsers. {{w|Google Chrome|Chrome}} 45 stopped supporting {{w|NPAPI}}, {{w|Mozilla Firefox|Firefox}} dropped support in version 52, and {{w|Microsoft Edge|Edge}} does not support NPAPI plugins at all. Furthermore, two days before this comic was published {{w|Oracle Corporation|Oracle}} (the developer of Java) [https://blogs.oracle.com/java-platform-group/entry/moving_to_a_plugin_free announced] plans to officially end support of Java applets in an upcoming version.
 ;Archive.org Mirror
-:{{w|Internet Archive|Archive.org}} is a website which archives websites, and created the {{w|Wayback Machine}}. It's ambiguous whether the "Archive.org mirror" would be a copy of the xkcd server or of Archive.org itself.
+:{{w|Internet Archive|Archive.org}} is a website which archives websites, and created the {{w|Wayback Machine}}. It's ambiguous whether the "Archive.org mirror" would be a copy of the xkcd server or of Archive.org itself. If it was a copy of Archive.org, then it would be enormous, as Archive.org holds virtually the entire internet.
 ;Hypercard.js
 :{{w|HyperCard}} can be considered as a kind of predecessor for PowerPoint developed at {{w|Apple Inc.|Apple}}. The file extension .js indicates that is was rewritten in {{w|JavaScript}}. A similar reference to JavaScript is found in [[1508: Operating Systems]].

@@ Line 46: / Line 46: @@
 :{{w|Microsoft Bob}} was a short-lived, failed attempt by Microsoft, around 1995, to provide a user-friendly interface for the {{w|Microsoft Windows|Windows}} 3.1x, Windows 95 and Windows NT operating systems. It consisted of a virtual "house" and "rooms", and clicking on objects in the room would open applications, for instance clicking on a pen would open the word processor. It was heavily criticized and was soon discontinued. Randall seems to be making the suggestion that Bob has continued to be developed and now there's a Bob Server, similarly to Windows server.
 ;A giant {{w|Central processing unit|CPU}} someone built in Minecraft
-:{{w|Minecraft}} is a popular sandbox game where you place blocks to build things. Since the introduction of Redstone objects (materials used to create basic electric circuits within the game) people have made many machines within Minecraft, including calculators and clocks. The most complex of these machines simulate simple computers, capable of storing several lines of code and performing basic mathematical operations such as division, which requires thousands of blocks and extremely complex designs. A Minecraft CPU capable of hosting a website would be ridiculously huge and nearly impossible to work with: the input/output would be needlessly unwieldy, and by the time the data is parsed any other computer could have finished the job already; and Redstone circuits in Minecraft work much slower than in real life, quite literally trillions of times slower.
+:{{w|Minecraft}} is a popular sandbox game where you place blocks to build things. Since the introduction of [https://minecraft.wiki/w/Redstone redstone] objects (materials used to create basic electric circuits within the game) people have made many machines within Minecraft, including calculators and clocks. The most complex of these machines simulate simple computers, capable of storing several lines of code and performing basic mathematical operations such as division, which requires thousands of blocks and extremely complex designs. A Minecraft CPU capable of hosting a website would be ridiculously huge and nearly impossible to work with: the input/output would be needlessly unwieldy, and by the time the data is parsed any other computer could have finished the job already; and Redstone circuits in Minecraft work much slower than in real life, quite literally trillions of times slower.
 === Title text ===

← Older revision		Revision as of 05:18, 10 March 2025
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	[[Category:Video games]]		[[Category:Video games]]
	[[Category:Minecraft]]		[[Category:Minecraft]]
−	~~[[Category:Xkcd-branded products]]~~

← Older revision		Revision as of 02:40, 10 March 2025
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	[[Category:Video games]]		[[Category:Video games]]
	[[Category:Minecraft]]		[[Category:Minecraft]]
		+	[[Category:Xkcd-branded products]]

@@ Line 17: / Line 17: @@
 :CSS or {{w|Cascading Style Sheets}} is a language used to describe what a web page should look like. Web pages are usually written in {{w|HTML}}, which describes the ''structure'' of the page (i.e. divides the document into paragraphs, lists, etc.) complemented with CSS which describes the ''look and feel'' of the page (colors, fonts, margins, etc.). EBNF/CSS would suggest CSS with strange syntax.
 ;Broken Java Applet
-:In recent years it has become more difficult to run {{w|Java (programming language)|Java}} {{w|Applet|applets}} in several browsers. {{w|Google Chrome|Chrome}} 45 stopped supporting {{w|NPAPI}}, {{w|Mozilla Firefox|Firefox}} dropped support in version 52, and {{w|Microsoft Edge|Edge}} does not support NPAPI plugins at all. Furthermore, two days before this comic was published {{w|Oracle Corporation|Oracle}} (the developer of Java) [https://blogs.oracle.com/java-platform-group/entry/moving_to_a_plugin_free announced] plans to officially end support of Java applets in an upcoming version.
+:In recent years it has become more difficult to run {{w|Java applet|Java applets}} in several browsers. {{w|Google Chrome|Chrome}} 45 stopped supporting {{w|NPAPI}}, {{w|Mozilla Firefox|Firefox}} dropped support in version 52, and {{w|Microsoft Edge|Edge}} does not support NPAPI plugins at all. Furthermore, two days before this comic was published {{w|Oracle Corporation|Oracle}} (the developer of Java) [https://blogs.oracle.com/java-platform-group/entry/moving_to_a_plugin_free announced] plans to officially end support of Java applets in an upcoming version.
 ;Archive.org Mirror
 :{{w|Internet Archive|Archive.org}} is a website which archives websites, and created the {{w|Wayback Machine}}. It's ambiguous whether the "Archive.org mirror" would be a copy of the xkcd server or of Archive.org itself.
 ;Hypercard.js
-:{{w|HyperCard}} can be considered as a kind of predecessor for powerpoint developed at {{w|Apple Inc.|Apple}}. The file extension .js indicates that is was rewritten in {{w|JavaScript}}. A similar reference to JavaScript is found in [[1508: Operating Systems]].
+:{{w|HyperCard}} can be considered as a kind of predecessor for PowerPoint developed at {{w|Apple Inc.|Apple}}. The file extension .js indicates that is was rewritten in {{w|JavaScript}}. A similar reference to JavaScript is found in [[1508: Operating Systems]].
 ;QBasic on Rails
-:A mix between {{w|QBasic}} and {{w|Ruby on Rails}}. {{w|BASIC}} is a programming language that was very widespread during the 80s. QBasic is an implementation of BASIC created by Microsoft in early 90s, that, among other things, added support for {{w|structured programming}}. QBasic, lacking several of the features present on modern computer languages, is known for its spaghetti code. {{w|Ruby (programming language)|Ruby}} is a rather modern language, often used with Ruby on Rails web application {{w|Software framework |framework}}. QBasic on Rails would likely mean a port of Ruby on Rails, replacing Ruby with QBasic. QBasic no longer runs on modern computers, but there are a couple of {{w|free software|free}} implementations of QBasic, one being [https://www.qb64.net/ QB64] and the other [https://www.freebasic.net/ FreeBASIC], which are available for Windows, GNU/Linux, macOS, and Android. There also exists a webserver on BASIC called [https://www.runbasic.com/ RunBasic].
+:A mix between {{w|QBasic}} and {{w|Ruby on Rails}}. {{w|BASIC}} is a programming language that was very widespread during the 80s. QBasic is an implementation of BASIC created by Microsoft in early 90s, that, among other things, added support for {{w|structured programming}}. QBasic, lacking several of the features present on modern computer languages, is known for its spaghetti code. {{w|Ruby (programming language)|Ruby}} is a rather modern language, often used with Ruby on Rails web application {{w|Software framework |framework}}. QBasic on Rails would likely mean a port of Ruby on Rails, replacing Ruby with QBasic. QBasic no longer runs on modern computers, but there are a couple of {free implementations of QBasic, one being [https://www.qb64.net/ QB64] and the other [https://www.freebasic.net/ FreeBASIC], which are available for Windows, GNU/Linux, macOS, and Android. There also exists a webserver on BASIC called [https://www.runbasic.com/ RunBasic].
 ;[Blocked by AdBlocker]
 :{{w|Ad blocking}} software are extensions to browsers that try to remove ads from web pages, so the user is not distracted by them. [[624: Branding]] shows what "browsing without adblock" looks like. The joke is that AdBlocker is preventing us from seeing what makes up this portion of the stack. This could be because:
 :*Someone inserted an ad in the stack description. Some sites do insert ads in the middle of tables and lists, a typical case being between posts in forums.
 :*An ad is actually an integral part of the stack. Some sites make ads an integral part of the site content, so that users with ad blocking software will be forced to disable ad blocking to be able to properly interact with the site. Usually, in real life, this is not really a case of ads being part of the site, only that the site artificially refuses to work until it has some confirmation that ads have been properly loaded in the client side (by means of some script within the ads which sends the confirmation to the server).
-:*Ad blocking software has misidentified that portion of the stack as an ad, when in fact it is not (i.e. a false positive). This happens in real life, and it is a common source of great pains for the owner of the site which is being misidentified as an ad.
+:*Ad blocking software has misidentified that portion of the stack as an ad, when in fact it is not (i.e. a false positive). This happens in real life, and it is a common source of great pain for the owner of the site which is being misidentified as an ad.
 ;MongoDB/Excel
 :{{w|MongoDB}} is a modern {{w|NoSQL}} {{w|Database|database}} system, {{w|Microsoft Excel}} is a {{w|Spreadsheet|spreadsheet}} program from Microsoft, which is sometimes used as a database system (rarely a good choice).
 ;Some piece that works so nobody asks any questions
-:Writing any non-trivial piece of software always require a phase of {{w|debugging}}, which consists in finding and fixing {{w|Software bug|bugs}}. With complex software, this is a long and tiring process, so when the product is finally finished no one dares to modify it any further for fear that it will fail in unexpected ways. After some time passes, it is even worse because nobody really remembers how the software was ''supposed'' to work, so the product becomes some kind of godlike treasure which must be treated with the utmost respect and reverence because, you know, if it stops working we're all doomed ([[1421: Future Self]]). After completion, {{w|Refactoring}} is the process of rewriting code for greater efficiency or reliability. However, if the performance is not 'too bad' (i.e. not unusably terrible in normal use) there is a great temptation to avoid this, in favor of the 'if it ain't broke, don't fix it' methodology. This could lead, for example, to a trained monkey and an abacus being used to crunch numbers. It works, but could be done far better. However, nobody wishes to change it, for fear of breaking a presently functional, if inefficient, system.
+:Writing any non-trivial piece of software always requires a phase of {{w|debugging}}, which consists in finding and fixing {{w|Software bug|bugs}}. With complex software, this is a long and tiring process, so when the product is finally finished no one dares to modify it any further for fear that it will fail in unexpected ways. After some time passes, it is even worse because nobody really remembers how the software was ''supposed'' to work, so the product becomes some kind of godlike treasure that must be treated with the utmost respect and reverence because, you know, if it stops working we're all doomed ([[1421: Future Self]]). After completion, {{w|Refactoring}} is the process of rewriting code for greater efficiency or reliability. However, if the performance is not 'too bad' (i.e. not unusably terrible in normal use) there is a great temptation to avoid this, in favor of the 'if it ain't broke, don't fix it' methodology. This could lead, for example, to a trained monkey and an abacus being used to crunch numbers. It works, but could be done far better. However, nobody wishes to change it, for fear of breaking a presently functional, if inefficient, system.
 ;Triply-Nested Docker
-:{{w|Docker (software)|Docker}} is a {{w|Operating-system-level virtualization|software container}}, which is a way that allows a complete operating system to run under different operating system (OS) (as long they share the same kernel, among other things). Triply-nested docker would mean OS A running under OS B running under OS C running under OS D (running under OS E?). That would likely be a performance and management nightmare.
+:{{w|Docker (software)|Docker}} is a {{w|Operating-system-level virtualization|software container}}, which is a way that allows a complete operating system to run under a different operating system (OS) (as long they share the same kernel, among other things). Triply-nested docker would mean OS A running under OS B running under OS C running under OS D (running under OS E?). That would likely be a performance and management nightmare.
 ;Paravirtual Boy®
-:This is a reference to the {{w|Virtual Boy}}, a failed portable console created by {{w|Nintendo}}. It was [https://www.youtube.com/watch?v=MKKK6FH1vGw promoted as being a highly immersive, incredible experience], but the poor technology that it used caused it to be [https://youtu.be/OyVAp0tOk5A?t=56s very criticized] for not meeting the high expectations. {{w|Paravirtualization}} is a way of virtualization, that requires cooperation of the guest operating system, contrary to {{w|full virtualization}}, on which the guest operating system is not required to do anything special and the host handles everything.
+:This is a reference to the {{w|Virtual Boy}}, a failed portable console created by {{w|Nintendo}}. It was [https://www.youtube.com/watch?v=MKKK6FH1vGw promoted as being a highly immersive, incredible experience], but the poor technology that it used caused it to be [https://youtu.be/OyVAp0tOk5A?t=56s very criticized] for its high price and causing eyestrain after prolonged usage. {{w|Paravirtualization}} is a way of virtualization that requires the cooperation of the guest operating system, contrary to {{w|full virtualization}}, on which the guest operating system is not required to do anything special and the host handles everything.
 ;A dev typing real fast
-:A dev is a {{w|Software developer|software developer}}. This is possibly a reference to [[341: 1337: Part 1]], where [[Mrs. Roberts]] edits the {{w|Transmission Control Protocol|TCP}} stream live while wearing oven mitts and baking cookies. It looks like the XKCD Webserver is not a computer after all -- we have a person manually replying to HTTP protocol queries. Such a  feat would indeed require real fast typing. If this is the case, then it's possible that almost none of the other layers of the stack actually do anything.
+:A dev is a {{w|Software developer|software developer}}. This is possibly a reference to [[341: 1337: Part 1]], where [[Mrs. Roberts]] edits the {{w|Transmission Control Protocol|TCP}} stream live while wearing oven mitts and baking cookies. It looks like the XKCD Webserver is not a computer after all -- we have a person manually replying to HTTP protocol queries. Such a feat would indeed require really fast typing. If this is the case, then it's possible that almost none of the other layers of the stack actually do anything.
 ;Older version of our software
 :People are often reluctant to switch to newer versions of software because, even though newer versions are supposed to have more features and fewer bugs, they end up confusing users. Users of older versions are used to doing everything with less features and circumventing old bugs. They don't know how to use the new features, which of course come with new bugs they haven't learned how to circumvent yet. It is also often the case that newer versions remove weird unused old features, breaking the workflow of users who actually did use such features and are left without a suitable replacement ([[1172: Workflow]]). Alternately, since higher parts of a stack are dependent on lower parts, this could also be a reference to how the consumer versions of Microsoft Windows (3.x, 95, 98, and ME) ran on the "older version" software Microsoft DOS until Windows NT. Paired with the previous layer, it could instead mean that the human is merely retyping the output of the older version.

@@ Line 58: / Line 58: @@
 *Third, the 32-bit or 48-bit version: The {{w|Intel 80386}} processor used an architecture known as {{w|IA-32}}, which implies the {{w|Address bus|address bus}} is 32-bit wide and thus able to handle up to 4{{w|Gibibyte|GiB}} of {{w|Random-access memory|RAM}} memory. This was plenty for the early 1990s, when a typical home PC would have about 8MiB (this is 512 times less than 4GiB). However, about 10 years after that, a typical home PC could well use more than 4GiB of RAM, so several {{w|64-bit computing|64-bit architectures}} were created. These architectures are not compatible (32-bit software may run on 64-bit hardware of the same family, but software compiled as 64-bit doesn't work on a 32-bit system), so programs (including the Java Runtime Environment, or JRE) often have 32-bit and 64-bit versions to allow the most appropriate version to be installed. Furthermore, the JRE is heavily used by many web browsers, and for this to work the JRE and browser need to be the same "number of bits". This means that most people have installed both versions of the JRE to be able to use it with both 32-bit and 64-bit browsers. There's no 48-bit architecture (though some 64-bit processors including the {{w|x86-64|most common ones}} don't actually <b>use</b> all 64 bits everywhere, ignoring some bits so actual virtual or physical memory is smaller (in the case of the most common ones, 48bits virtual and 40bits physical), they simulate a full 64-bit environment to allow adding more bits later, so there are no specific 48-bit applications).
-*Fourth, an application trying to let the user install a new version of the JRE should direct the user to the download page in the [https://java.com/ java.com site], not to the main page which deals with lots of issues with java and is not particularly helpful when trying to update the JRE. It may be a common frustration of users to be directed or redirected to the Java frontpage by accident.
+*Fourth, the text would suggest that the user has a high enough version to run the software (Java major version 7 is certainly higher than Java major version 6), and yet it informs the user that it must update to a new version. It's possible that the website actually ''broke'' as new Java updates have been released, and the user must downgrade to an older version. The cause of the issue is impossible to guess.
-*Fifth, and continuing with the joke of users updating from 7.3.8.1¾ to 6.0.0.1 and not knowing why they should, the new version is said to "run fine but not really change anything". This is the usual behavior for Java updates: they run fine (possibly in opposition to [[1197: All Adobe Updates]], where updating must be done several times and the user is never sure they have installed all the newest updates), but after finished updating the user can't see any difference with the previous behavior, and/or may still be told that an update is required. Considering that 7.3.8.1¾ is bigger number than 6.0.0.1, it can also refer to the fact that the test for upgrading is incorrect and 7.3.8.1¾ is actually newer version or that a downgrade is required for the applet to work properly, because no one fixed it to work with the newer version. It may also refer to the fact installing new Java versions often requires editing environment variables to force the OS to default to the new JRE, which standard users of an application don’t know to do, leading their computer to use the old JRE anyway.
+*Fifth, an application trying to let the user install a new version of the JRE should direct the user to the download page in the [https://java.com/ java.com site], not to the main page which deals with lots of issues with java and is not particularly helpful when trying to update the JRE. It may be a common frustration of users to be directed or redirected to the Java frontpage by accident.
 ==Transcript==

@@ Line 12: / Line 12: @@
 Another example of a tech stack is featured in [[2166: Stack]].
-===Explanation of Layers===
+===Layers===
 ;EBNF/CSS
 :BNF or {{w|Backus–Naur Form}} is a syntax used for describing {{w|context-free grammars}}. {{w|Extended Backus–Naur Form|EBNF}} is "Extended BNF", it is the same thing as BNF with a few more syntactic constructs intended to ease its use in the most common cases. [[1343: Manuals]] mentioned EBNF.
@@ Line 34: / Line 34: @@
 :Writing any non-trivial piece of software always require a phase of {{w|debugging}}, which consists in finding and fixing {{w|Software bug|bugs}}. With complex software, this is a long and tiring process, so when the product is finally finished no one dares to modify it any further for fear that it will fail in unexpected ways. After some time passes, it is even worse because nobody really remembers how the software was ''supposed'' to work, so the product becomes some kind of godlike treasure which must be treated with the utmost respect and reverence because, you know, if it stops working we're all doomed ([[1421: Future Self]]). After completion, {{w|Refactoring}} is the process of rewriting code for greater efficiency or reliability. However, if the performance is not 'too bad' (i.e. not unusably terrible in normal use) there is a great temptation to avoid this, in favor of the 'if it ain't broke, don't fix it' methodology. This could lead, for example, to a trained monkey and an abacus being used to crunch numbers. It works, but could be done far better. However, nobody wishes to change it, for fear of breaking a presently functional, if inefficient, system.
 ;Triply-Nested Docker
-:{{w|Docker (software)|Docker}} is a {{w|Operating-system-level virtualization|software container}}, which is a way that allows a complete operating system to run under different operating system (OS) (as long they share the same kernel, among other things). Triply-nested docker would mean OS A running under OS B running under OS C running under OS D (running under OS E?). That would likely be a performance and management nightmare
+:{{w|Docker (software)|Docker}} is a {{w|Operating-system-level virtualization|software container}}, which is a way that allows a complete operating system to run under different operating system (OS) (as long they share the same kernel, among other things). Triply-nested docker would mean OS A running under OS B running under OS C running under OS D (running under OS E?). That would likely be a performance and management nightmare.
 ;Paravirtual Boy®
 :This is a reference to the {{w|Virtual Boy}}, a failed portable console created by {{w|Nintendo}}. It was [https://www.youtube.com/watch?v=MKKK6FH1vGw promoted as being a highly immersive, incredible experience], but the poor technology that it used caused it to be [https://youtu.be/OyVAp0tOk5A?t=56s very criticized] for not meeting the high expectations. {{w|Paravirtualization}} is a way of virtualization, that requires cooperation of the guest operating system, contrary to {{w|full virtualization}}, on which the guest operating system is not required to do anything special and the host handles everything.