explain xkcd - User contributions [en]

Header text

2023-07-24T02:39:31Z

Scyrmion: Undo revision 318377 by 172.69.214.159 (talk)

[[File:xkcd_header.png|thumb|left|250px|The header segment on [[xkcd|xkcd.com]]]]{{TOC}}The '''header text''' is updated whenever Randall has news to share. However, after the novelty of the news ends, the page usually goes back to its default header text, which states:

:xkcd updates every Monday, Wednesday, and Friday.

Usually, changes to the header text show up in all comics. However, in certain cases, the header text of a specific comic is changed permanently, which means it won't be modified like the rest of the comics.

==Comic-specific header text==
{{incomplete|This list is missing many comic-specific header texts. Don't remove this notice unless they're all mentioned here. [[Talk:header_text#1047|See the Talk page]] for some examples.}}

When editing the section, list the changes chronologically with the date of the web archive link and hyperlink each date. Include an internal link to the comic at the time of each change and describe the modifications with relevant information. Place the most recent changes at the top.

===Instructions===
*[[2601: Instructions]]
**This comic's header mentions the people who helped put it together.
***It was on the front page from Friday [https://web.archive.org/web/20220401210146/https://xkcd.com/ 2022-04-01] until Monday [ 2022-04-04], until the new comic was released on Monday.
****Expect there to be a page from April 4, but at this point there is one from [https://web.archive.org/web/20220406124444/https://xkcd.com/ 2022-04-06] showing the front page having returned to normal header.
**The text:
***Today's comic was created with [https://twitter.com/fadinginterest Patrick], [https://twitter.com/Aiiane Amber], [https://twitter.com/chromakode @chromakode], [https://twitter.com/dyfrgi Michael], [https://twitter.com/wirehead2501 Kat], [https://twitter.com/xDirtyPunkx Conor], [https://twitter.com/zigdon @zigdon], and [https://twitter.com/bstaffin Benjamin Staffin].
**It thanks those that helped Randall create that years [[:Category:April fools' comics|April fools' comic]].
***All have a link to their name, the first with an Instagram page, the other seven with a link to their Twitter account. Five of those also helped with the previous April Fools' comic, see below.
**Since this header was related only to the Fools' comic, it was removed from the frontpage header, when the next comic was released.
***But it stayed up as one of the permanent different headers on this comic, as seen two days after it stopped being on the front page on [https://web.archive.org/web/20220406021357/https://xkcd.com/2601/ 2022-04-06].
**See the comic on xkcd {{xkcd|2601}}.

===Checkbox===
*[[2445: Checkbox]]
**This comic's header mentions the people who helped put it together.
***It was on the front page from Thursday [https://web.archive.org/web/20210401232108/https://xkcd.com/ 2021-04-01] until Monday [https://web.archive.org/web/20210405130031/http://xkcd.com/ 2021-04-05], until the new comic was released on Monday.
**The text:
***This comic was put together by [https://chromakode.com/ Max Goodhart], [https://twitter.com/fadinginterest Patrick], [https://twitter.com/Aiiane Amber], [https://twitter.com/bstaffin Benjamin Staffin], [https://twitter.com/cotrone Kevin Cotrone], [https://twitter.com/wirehead2501 Kat], and [https://twitter.com/dyfrgi Michael Leuchtenburg].
**It thanks those that helped Randall create that years [[:Category:April fools' comics|April fools' comic]].
***All have a link to their name, the first with a personal home page, the other six with a link to their Twitter account. Five of those also helped with the previous April Fools' comic, see below.
**Since this header was related only to the Fools' comic, it was removed from the front page header, when the next comic was released, here from the day after that release Tuesday [https://web.archive.org/web/20210406143023/http://xkcd.com/ 2021-04-06].
**But it stayed up as one of the permanent different headers on this comic, as seen two days later on [https://web.archive.org/web/20210407203547/https://xkcd.com/2445/ 2021-04-07].
**See the comic on xkcd {{xkcd|2445}}.

===Collector's Edition===
*[[2288: Collector's Edition]]
**This comic's header mentions the people who helped put it together.
***It was on the front page only for about a day around April 3rd and [https://web.archive.org/web/20200404014814/http://xkcd.com/#-370,-277vApril 4th 2020].
**The text:
***Today's comic was put together by [https://chromakode.com/ Max Goodhart], [https://twitter.com/Aiiane Amber], [https://twitter.com/bstaffin Benjamin Staffin], [https://twitter.com/cotrone Kevin], [https://www.instagram.com/fading_interest/ @fading_interest], [https://twitter.com/wirehead2501 Kat], [https://twitter.com/zigdon @zigdon], and Christopher Night.
****All names have links except the last.
**It thanks those that helped Randall create the 2020 [[:Category:April fools' comics|April fools' comic]], which had taken two extra days before it was released due to the complex nature of the comic.
*Due to the delay the next comic, [[2289: Scenario 4]], was released already the day after the Fool's comic, even though it was thus [[2289:_Scenario_4#Trivia|on a Saturday]]!
**Since this header was related only to the Fools' comic, it was removed from the front page header, when the next comic was released, but it stayed up as one of the permanent different headers on this comic
**See the comic on xkcd {{xkcd|2288}}.

=== Seven Years===
*[[1928: Seven Years]]
**[http://web.archive.org/web/20171214171157/https://xkcd.com/ 2017-12-14]
**It was released as a response to another cancer diagnosis, this is explained in the [[Design_of_xkcd.com#Header_text|Header text]] which has replaced the standard ''xkcd updates every Monday, Wednesday, and Friday.'' The new one is this one, with the active link included:
**The text (with link):
***Becky Beaton, sister of fellow cartoonist Kate Beaton, has also been diagnosed with cancer. You can support her treatment [https://www.youcaring.com/beckybeaton-1008390 here].
**{{w|Kate Beaton}} is the creator of the web comic [http://www.harkavagrant.com/ Hark! A Vagrant].
***Although this comic is not one on Randall's list of ''[[Design_of_xkcd.com#Comics_I_enjoy|Comics I enjoy]]'', he is clearly much influenced by another cancer diagnosis among someone in his own creative field.below.
**On [https://web.archive.org/web/20190817141450/https://www.xkcd.com/1928/ 2019-08-17], close to two years later, the message was still there and also [https://web.archive.org/web/20211226120634/https://xkcd.com/1928/ 2021-12-26] just past four years later.
***There was the possibility that it would be removed, when the support page was discontinued...
***But as that already happened before [http://web.archive.org/web/20181106124430/https://www.youcaring.com/beckybeaton-1008390 2018-11-06] it seems like it will be there to stay.
***Last archived version was from [http://web.archive.org/web/20180305022301/https://www.youcaring.com/beckybeaton-1008390 2018-03-05].
***Randall has previously done something similar for another friend, Emiliy, but [[#2014-11-27_-_Help_Emily|that header]] was not made permanent.
**See the comic on xkcd {{xkcd|1928}}.

===ISS Solar Transit 2===
*[[1830: ISS Solar Transit 2]]
**[https://web.archive.org/web/20170428041338/https://xkcd.com/ 2017-04-28]
**This header links back to [[1828: ISS Solar Transit]], a comic with the same joke setup released on the Monday of the same week
**See the comic on xkcd {{xkcd|1830}}.

===Meteorite Identification===
*[[1723: Meteorite Identification]]
**Randall realized that his comic was almost a copy of some other person. And he has since then acknowledged this on the comics specific page see more [[1723: Meteorite Identification#Trivia|here]].
**At the time of this post, in the newest saved version on the archive from [http://web.archive.org/web/20161010215516/http://xkcd.com/1723/ 2016-10-10] it is still there and says:
***Note: Jolyon, founder of [http://www.mindat.org/ mindat.org], made a similar chart way before me!
**See the comic on xkcd {{xkcd|1723}}.

===Substitutions 3===
*[[1679: Substitutions 3]]
**This was the third installment of Substitutions and as he did with [[#Substitutions 2|the second]] linking to the first and telling about browser extensions for this he did the same with this one:
**The text:
***(Previously: {{xkcd|1288|Substitutions}} and {{xkcd|1625|Substitutions 2}})
***Note: There are various [https://chrome.google.com/webstore/detail/replacerator/gaajhenbcclienfnniphiiambbbninnp?hl=en browser extensions] for this.
**It was on the main page while the comic was up, for instance here on [https://web.archive.org/web/20160512102325/http://xkcd.com/ 2016-05-12].
**See the comic on xkcd {{xkcd|1679}}.

=== Garden===
*[[1663: Garden]]
**This comic had a header text to help people use the comic when it came out.
**For some time this text was the main header text, but after a while is disappeared from the main header, but remained as the header for Garden.
***See more [[xkcd_Header_text#2016-04-04_-_Protip_on_Garden|below]] or on the Garden page [[Garden#Header_text_after_release|here]]
**Today and as of the newest saved version on the archive from [http://web.archive.org/web/20161231231600/http://xkcd.com/1663/ 2016-12-31] it is still there and says:
***Protip: If you don't like how your garden is growing, you can click to prune it.
***You can copy the URL to share your garden. From other browsers, it will be view-only.
**See the comic on xkcd {{xkcd|1663}}.

===Substitutions 2===
*[[1625: Substitutions 2]]
**This was the second installment of Substitutions and Randall links to the first and tells about browser extensions for this:
**The text:
***(Previously: {{xkcd|1288|Substitutions}})
***Note: There are various [https://chrome.google.com/webstore/detail/xkcd-substitutions/jkgogmboalmaijfgfhfepckdgjeopfhk?hl=en browser extensions] for this.
****He did the same when [[xkcd_Header_text#Substitutions_3|Substitutions 3]] came out, linking to the two previous.
**It was on the main page while the comic was up, for instance here on [https://web.archive.org/web/20160104171722/http://xkcd.com/ 2016-01-04].
**See the comic on xkcd {{xkcd|1625}}.

===United Shapes===
*[[1079: United Shapes]]
**The header was unique for this comic on the day it came out: [https://web.archive.org/web/20120709045709/http://xkcd.com:80/ 2012-07-09].
**The text:
***There's a larger version of this map [http://xkcd.com/1079/large/ here] (Colorado is [http://xkcd.com/1079/colorado/ here]).
***It's also available as a [https://web.archive.org/web/20120709045709/http://store.xkcd.com/xkcd/#StateMap poster].
**The text was never on other pages:
***Before US was released, also on [https://web.archive.org/web/20120709004956/http://www.xkcd.com/ 2012-07-09] the comic [[1078: Knights]] was on the main page, with the previous [[xkcd_Header_text#2012-04-09 -_Standard_text_plus_store_link|promotion of the store]].
***The US version was still on the front the day after [https://web.archive.org/web/20120710063424/http://xkcd.com/ 2012-07-10].
***But the same day [https://web.archive.org/web/20120710114846/http://xkcd.com/1078/ 2012-07-10] the page for Knights did show a new header, which may only have been active on other pages than the front on this day... See details here [[xkcd_Header_text#2012-07-10_-_New:_what-if.xkcd.com|New:_what-if.xkcd.com]]
****Here is another page from [https://web.archive.org/web/20120710095644/http://xkcd.com/1070/ 2012-07-10] with [[1070: Words for Small Sets]], that was also saved that day, so this was on the top of all other comics, except the front page.
**There are simply no version of the front page from the 11th and 12th of July 2012. But from other pages it can be shown that from the 11th there was a difference.
***On [https://web.archive.org/web/20120711223349/http://xkcd.com/1078/ 2012-07-11] on the page for Knights and for instance from the same day on page number [https://web.archive.org/web/20120711223339/http://xkcd.com:80/1077 1077] [[1077: Home Organization]] there is the same but new header, different than the one Knights had both two days before and the other one from the day before.
***And also on [https://web.archive.org/web/20120711123734/http://xkcd.com:80/1079/ 2012-07-11] the numbered page {{xkcd|1079}} for US displays a mix of this new and the unique version of the header text.
****It left our the part about Colorado and moved the bottom line up so the unique part is written in one line (that may still take up two lines as the text will spill over, (maybe just in some browsers?)
****And then it added the two lines of header text that was on all the other pages (presumably also the front page, but that was first proved with the version from [https://web.archive.org/web/20120713154207/http://xkcd.com/ 2012-07-13]).
****And this is the version still shown on {{xkcd|1079}} today, even though the bottom lines was a normal header that was supposed to disappear.
**The final text that is still on US today:
***There's a larger version of this map [http://xkcd.com/1079/large/ here]! It's also available as a [https://store.xkcd.com/collections/posters/products/united-shapes-poster poster].
***New: [https://what-if.xkcd.com/1/ what-if.xkcd.com]: abusing science to answer hypothetical questions.
***I'll answer a new reader question every Tuesday.
****Here above the link has been updated to the one in the current version, where as the above link in the original version, that is now a dead link, has been directed to an archived version of the stores poster.
****The link the new part is to the very first ''[[what if? (blog)|what if?]]'' article ''{{what if|1|Relativistic Baseball}}'' which was released on 2012-07-10, the day after US was released, but before the next comic [[1080: Visual Field]] was released on 2012-07-11.
*****There are no version of comic {{xkcd|1080}} archived while it was on the front page, so it is not possible to tell what the front page looked like on the 11th and 12th of July. But best guess is that it looked like that on Knight shown above from the 11th.
**The first version was on the main page while the comic was up.
***Maybe there was a time with the final version on the front page, but seems like Randall put the new header text there in hand, and forgot to delete it after, so he probably first changed it when the new comic came out.
***Since the new header was important, promoting his new ''what if'' blog, he likely did not wish to have a fairly new page (maybe even on the front page on the 10th) without the reference. Also he did not wish to remove the link to the poster in the store.
***But this makes it a special unique header, as a relic from the past header text is left together with the text that was supposed to be permanent. It should have been deleted when the link to ''what if'' 1 was removed.
**See the comic on xkcd {{xkcd|1079}}.

===Umwelt===
*[[1037: Umwelt]]
**It has a permanent promotion of the store already from the release day on [https://web.archive.org/web/20120401151639/http://xkcd.com:80/ 2012-04-01]:
**The unique text:
***You can get posters, prints, and t-shirts in the [https://store.xkcd.com/ xkcd store].
**It stayed on the front page while this comic was the most recent, so for instance also two days later on [https://web.archive.org/web/20120403223453/http://www.xkcd.com/ 2012-04-03]
***There was a different header on other comics even while this comic was on the front page with the unique text. See [[xkcd_Header_text#2012-03-28_-_Visiting_Newport_News|Visiting Newport News]].
**See the comic on xkcd {{xkcd|1037}}.

===s/keyboard/leopard/===
*[[1031: s/keyboard/leopard/]]
**In response to the idea of having you browser replace keyboard with leopard a reader made a script that could do just that.
**Randall seem to have gotten this script before release (or at least on the day of release) as it was already the header text on [https://web.archive.org/web/20120319130702/http://xkcd.com/ 2012-03-19] the day the comic was released.
**The unique text is:
***A helpful reader has provided an [https://userscripts.org/scripts/show/128626 s/keyboard/leopard/ user script].
****The link does not go anywhere useful any longer, but here is the archived version of the link from two days after the release of the comic on [https://web.archive.org/web/20120321174019/http://userscripts.org/scripts/show/128626 2012-03-21]
**It was never changed on the other comics so was only on the front while this comic was up until 2012-03-21
***Here also shown on the second day it was up on its own page on [https://web.archive.org/web/20120320143916/http://xkcd.com:80/1031/ 2012-03-20].
**The next comic [[1032: Networking]] came out on [https://web.archive.org/web/20120321205835/http://xkcd.com:80/ 2012-03-21] and here the header text has returned to what it was before the leopard comic: [[xkcd_Header_text#2012-03-12_-_xkcd_Holistic_Browser|xkcd Holistic Browser]].
***Here are examples from dates around this showing it was not used on other pages:
****The last archived version of the front page from before the 19th was this version from [https://web.archive.org/web/20120317121834/http://xkcd.com:80/ 2012-03-17], but here is an example from [https://web.archive.org/web/20120318153256/http://xkcd.com:80/1030/ 2012-03-18] (from comic [[1030: Keyed]]), the day before leopard comic came out.
****Both on [https://web.archive.org/web/20120319174700/http://xkcd.com/1030/ 2012-03-19] (from comic [[1030: Keyed]]) and on [https://web.archive.org/web/20120320191039/http://xkcd.com:80/1012 2012-03-20] (from comic [[1012: Wrong Superhero]]) during the time leopard was up, the header text currently in used was still shown.
**See the comic on xkcd {{xkcd|1031}}.

===Making Things Difficult===
*[[996: Making Things Difficult]]
**Randall links to a blog post about cancer as related to this cancer comic
**The unique text:
***Some context for the cancer comics:
***[https://blog.xkcd.com/2011/06/30/family-illness/ https://blog.xkcd.com/2011/06/30/family-illness/]
****The link is for post on his [[Blag]].
****It is on the oldest stored version from [https://web.archive.org/web/20111229043804/http://xkcd.com:80/ 2011-12-29] when it was on the header.
**See the comic on xkcd {{xkcd|996}}.

===Money===
*[[980: Money]]
**Randall notes his thoughts about making it and makes a promotion of the poster.
**The unique text:
***This one was fun (and exhausting) to make.
***There's a poster of it in the [https://store.xkcd.com/products/money-poster store]!
****It is both at the oldest stored version from [https://web.archive.org/web/20120404110059/http://xkcd.com:80/980 2012-04-04] and the newest at time of editing [https://web.archive.org/web/20220108132250/https://xkcd.com/980/ 2022-01-08].
**See the comic on xkcd {{xkcd|980}}.

===Map Projections===
*[[977: Map Projections]]
**Randall notes that a person had birthday on the release of this comic about maps, and this guy has maps on his homepage
**The unique text:
***It turns out Monday was Steve Waterman's birthday. His [https://web.archive.org/web/20111118003418/http://www.watermanpolyhedron.com/ site] has posters of his map, plus maybe the world's only Winkel Tripel-critiquing poetry.
****The link goes to [http://www.watermanpolyhedron.com/ Waterman project] home page. Above the link goes to an archived version from around the time of release of the header text.
****It is at the oldest stored version with the comic on the front page on [https://web.archive.org/web/20111115231643/http://xkcd.com:80/ 2011-11-15].
**See the comic on xkcd {{xkcd|977}}.

===Na===
*[[851: Na]]
**After Randall made this comic, he realized he could have "made it better" and changed the header text to:
***I can't ''believe'' I forgot Hey Jude.
***I don't get do-overs, but I couldn't resist making [https://xkcd.com/851_make_it_better/ a fixed version].
**See more about it in that comics [[851:_Na#Trivia|trivia section]].
**See the comic on xkcd {{xkcd|851}}.

===Malamanteau===
*[[739: Malamanteau]]
**Randall notices that he has changed this comics license, so it can be used on Wikipedia.
**The text:
***At Wikipedia's request, I release this comic under a [https://creativecommons.org/licenses/by-sa/3.0/us/ cc-by-sa] license.
****The link is to the page regarding {{w|Creative Commons license}} in the US.
****Specifically for Attribution-ShareAlike 3.0 United States (CC BY-SA 3.0 US)
*****Usually xkcd is [[Design_of_xkcd.com#License_and_copyright|shared under]] [http://creativecommons.org/licenses/by-nc/2.5/ Creative Commons Attribution-NonCommercial 2.5 License]. This does not allow commercial use, But the 3.0 does.
**When the comic came out it had the normal header text from that time, as seen here two days after release on [https://web.archive.org/web/20100514072436/http://xkcd.com/ 2010-05-14].
***First archived version with the unique text is from [https://web.archive.org/web/20100913003146/http://xkcd.com/739/ 2010-09-13], but the previous archived version of this comic is from [https://web.archive.org/web/20100713160533/http://xkcd.com:80/739/ 2010-07-13].
***So it happened somewhere in the two months in between. But at least it was not there the first two months after release, but there before four month after release.
**See the comic on xkcd {{xkcd|739}}.

===Steal This Comic===
*[[488: Steal This Comic]]
**Randall is tired of {{w|DRM}}, an acronym standing for Digital Rights Management. This comic displays this. He thus make a promotion of Amazon that sells music without DRM.
**The text:
***Note: the [https://www.amazon.com/MP3-Music-Download/b?ie=UTF8&node=163856011 Amazon.com MP3 store] sells DRM-free music. Kudos.
****The link is to Amazon MP3 music. Here is an archived version from [https://web.archive.org/web/20081001083843/http://www.amazon.com/MP3-Music-Download/b?ie=UTF8&node=163856011 2008-10-01], two weeks prior to the release of the comic.
**The header text was on the comic from the release day, here seen the day after on the first archived version from [https://web.archive.org/web/20081014232952/http://xkcd.com/ 2008-10-14].
**See the comic on xkcd {{xkcd|488}}.

===House of Pancakes===
*[[472: House of Pancakes]]
**This comic's header notes its status as a parody:
***(Today's comic is a parody of [https://www.amazon.com/House-Leaves-Mark-Z-Danielewski/dp/0375703764 House of Leaves].)
**Only on the days this comic was the newest was this header featured on the front page of xkcd for instance as seen here the day after release on [https://web.archive.org/web/20080906103932/http://www.xkcd.com/ 2008-09-06].
***But it was only on this comic. The commercial for his new t-shirt was on all the other pages, also on [https://web.archive.org/web/20080906103932/http://www.xkcd.com/ 2008-09-06] and presumably returned to the front page with the next comic. But there is a gap in the archive after this comic.
**See the comic on xkcd {{xkcd|472}}.

==Global header text==
When editing the section, list the changes chronologically with the date of the web archive link and hyperlink each date. Include an internal link to the newest comic at the time of each change and describe the modifications with relevant information. Position the last comic displaying the header text below the other data and place the most recent change at the top.

===2022-09-13 - What if? 2 is available now===
*[https://web.archive.org/web/20220913142432/https://xkcd.com/ 2022-09-13].
**[[2672: What If? 2 Flowchart]] was released as the header changed, even though it was a Tuesday.
***The header and the comic celebrates the release of the new what if? 2 book, that came out on this day.
**The header kept the same layout as the previous and thus still consist of two parts. With the right picture the window also used in [[#2022-01-10 - Standard text with countdown|the countdown]], but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plan is the book title in white text.
**The new image to the left has a black border. To the left is still the picture of the new what if? 2 book. It has the same image as in the picture to the right, but showing the entire front of the book, with details of those looking up at the plane from the ground. The title and the author name can be read in white on the red book. There are also unreadable white text above the plane and below the author name. The spine of the book can also be seen, as the book is seen a bit from the side. Here are also unreadable white text. To the right of the book there are two lines of text, with the first line in very large bold letters
**The text:
***what if? 2
***Randall Munroe
***What if? 2 is available now!
***what if? 2
****Both images are links that goes to a dedicated page on xkcd about [https://xkcd.com/what-if-2/ what if? 2: the book].
*This thus ended the pre-release promotion of the book, that began on [[#xkcd_Header_text#2022-01-31_-_What_if.3F_2|2022-01-31]], plus of course the three weeks of [[#2022-01-10 - Standard text with countdown|countdown]] before. For a sum total of 8 months and three days.
**It will be interesting to see how long before any reference to what if? 2 will disappear from the header text.

===2022-09-12 - One day to What if? 2 comes out===
*[https://web.archive.org/web/20220912125617/https://xkcd.com/ 2022-09-12]
**This was while [[2670: Interruption]] was still up.
**The header is the same layout as the previous and thus still consist of two parts. With the right picture the window also used in [[#2022-01-10 - Standard text with countdown|the countdown]], but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plan is the book title in white text.
**The new image to the left has a black border. To the left is still the picture of the new what if? 2 book. It has the same image as in the picture to the right, but showing the entire front of the book, with details of those looking up at he plane from the ground. The title and the author name can be read in white on the red book. There are also unreadable white text above the plane and below the author name. The spine of the book can also be seen, as the book is seen a bit from the side. Here are also unreadable white text. To the right of the book there are three lines of text. With the first line written in large bold letters. This also has a footnote star. And the footnote is then written to the right in smaller font over five lines of text.
**The text:
***what if? 2
***Randall Munroe
***One day* until what if? 2 comes out!
***<nowiki>*</nowiki>I'm going to spend the day with that Les Mis song stuck in my head, aren't I.
***what if? 2
****Both images are links that goes to a dedicated page on xkcd about [https://xkcd.com/what-if-2/ what if? 2: the book].
**The foot note refers to the [[2636: What If? 2 Countdown]]. For the date where the header changed 2022-09-12 it was ''F(99) where F(N) means sing all the verses of N Bottles of Beer On the wall followed by F(N-1)'' to release day.
***It is thus for certain this song Randall mentions will now be stuck in his head.
***Les mis song, probably meaning les miserables song, as in a horrible song, he now has stuck in his head for an entire day.
**The header stayed the same until [https://web.archive.org/web/20220913134002/https://xkcd.com/ 2022-09-13].
***This was while [[2671: Rotation]] was still up, early on the release day of the new book.

===2022-09-12 - Three days to What if? 2 comes out===
*[https://web.archive.org/web/20220911102450/https://xkcd.com/ 2022-09-11]
**This was while [[2670: Interruption]] was still up.
**The header is the same layout as the previous and thus still consist of two parts. With the right picture the window also used in [[#2022-01-10 - Standard text with countdown|the countdown]], but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plan is the book title in white text.
**The new image to the left has a black border. To the left is still the picture of the new what if? 2 book. It has the same image as in the picture to the right, but showing the entire front of the book, with details of those looking up at he plane from the ground. The title and the author name can be read in white on the red book. There are also unreadable white text above the plane and below the author name. The spine of the book can also be seen, as the book is seen a bit from the side. Here are also unreadable white text. To the right of the book there are three lines of text. With the first line written in large bold letters. This also has a footnote star. And the footnote is then written to the right in smaller font over five lines of text.
**The text:
***what if? 2
***Randall Munroe
***Three days* until what if? 2 comes out!
***<nowiki>*</nowiki>Assuming it's still Saturday. I'm a static png image and can't perceive time.
***what if? 2
****Both images are links that goes to a dedicated page on xkcd about [https://xkcd.com/what-if-2/ what if? 2: the book].
**The header only stayed the same for one day and [[2670: Interruption]] was still up when it changed to the next.

===2022-09-07 - Less than one week to What if? 2 comes out===
*[https://web.archive.org/web/20220907211736/https://xkcd.com/ 2022-09-07]
**This was while [[2668: Artemis Quote]] was still up.
**The header still consist of two parts. With the right picture the window also used in [[#2022-01-10 - Standard text with countdown|the countdown]], but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plane is the book title in white text.
**The new image to the left has a black border. To the left is still the picture of the new what if? 2 book. It has the same image as in the picture to the right, but showing the entire front of the book, with details of those looking up at he plane from the ground. The title and the author name can be read in white on the red book. There are also unreadable white text above the plane and below the author name. The spine of the book can also be seen, as the book is seen a bit from the side. Here are also unreadable white text. To the right of the book there are four lines of text. With the middle line written in large bold letters. This also has a footnote star. And the footnote is then written to the right in smaller font over four lines of text.
**The text:
***what if? 2
***Randall Munroe
***Less than one week* until what if? 2 comes out!
***<nowiki>*</nowiki>Oh no, now I have that song stuck in my head.
***what if? 2
****Both images are links that goes to a dedicated page on xkcd about [https://xkcd.com/what-if-2/ what if? 2: the book].
**The foot note refers to the [[2636: What If? 2 Countdown]]. For the date where the header changed 2022-09-07 it was ''one pico-universe-lifetime'' to release day. But the next day 2022-09-08 it was ''The Baby Shark chorus for a family of 50,000 sharks''.
***It is thus for certain this song Randall mentions will now be stuck in his head.
**The header stayed the same until [https://web.archive.org/web/20220910024549/https://xkcd.com/ 2022-09-10].
***This was while [[2670: Interruption]] was up.

===2022-08-27 - Preorder What if? 2 - with image - again===
*[https://web.archive.org/web/20220827232205/https://xkcd.com/ 2022-08-27]
**[[2664: Cloud Swirls]] came out when it changed.
**The header [[#2022-08-16 - Preorder What if? 2 - with image|changed back]] to the preorder image from the previous header, when Randall's book tour ended. See the link.
*It ended on [https://web.archive.org/web/20220906191403/https://xkcd.com/ 2022-09-06].
**This was while [[2668: Artemis Quote]] was up.

===2022-08-17 - What if? 2 book tour===
*[https://web.archive.org/web/20220817161136/https://xkcd.com/ 2022-08-17]
**[[2659: Unreliable Connection]] was out when it changed.
**The header still consist of two parts. With the right picture the window also used in [[#2022-01-10 - Standard text with countdown|the countdown]], but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plan is the book title in white text.
**The new image to the left has a black border. Inside this there is text to the left. Then Cueball is seen flying by holding on to a single balloon (like in [[1110: Click and Drag]]). He flies over five mountain peaks with snow, with three clouds and three distant birds in front of him, as he drifts to the right, as shown with movements lines behind him. In front of him is a dark feature at the bottom of the frame. Above this is a blue square (like a button) with white text.
**The text:
***I'm going on a what if? 2 book tour!
***Click to see where
***what if? 2
****The image to the left is a link to [https://xkcd.com/events/ randall munroe: events] page on xkcd. Which at the time showed the calendar with the planned stop for his book tour, which covered the US and London.
****As always the link button in blue is not the only part of the image that is a link, as he just mentioned in the [[#2022-08-11 - Preorder What if? 2 - with image|previous header text]], and several times before...
****The right image is a link that goes to a dedicated page on xkcd about [https://xkcd.com/what-if-2/ what if? 2: the book].
*This header thus continues the promotion of the new book, which was at the time was only 27 days away (or [[2636:_What_If%3F_2_Countdown|6 dog months]]).
**It will be interesting to see how long it takes before promotion for the book disappears from the header. It may still take months.
*The header stayed the same until [https://web.archive.org/web/20220826202043/https://xkcd.com/ 2022-08-26].
**This was while [[2663: Tetherball Configurations]] was up.

===2022-08-11 - Preorder What if? 2 - with image===
*[https://web.archive.org/web/20220811055445/https://xkcd.com/ 2022-08-11]
**[[2657: Complex Vowels]] came out as it changed.
*The message in the header was not really changed, but the meaning of the text from the previous header was now written in an image, although the text did change somewhat.
**The header thus still consist of two parts. To the left the new image with an picture of the book and text. And to the right the window also used in [[#2022-01-10 - Standard text with countdown|the countdown]], but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plan is the book title in white text.
**The new image to the left has a black border. Inside this to the right is the new text. To the left is a picture of the new what if? 2 book. It has the same image as in the picture to the right, but showing the entire front of the book, with details of those looking up at he plane from the ground. The title and the author name can be read in white on the red book. There are also unreadable white text above the plane and below the author name. The spine of the book can also be seen, as the book is seen a bit from the side. Here are also unreadable white text.
**The text:
***what if? 2
***Randall Munroe
***Preorder what if? 2 and enter for a chance to win a comic inspired by your question! Click here to learn more. Or click wherever. This whole image is a link because html is hard.
***what if? 2
****In the left image there is a blue link font on the word "here" in click here. However the entire left image is a link to the [https://sites.prh.com/whatif2 what if 2 contest]. As explained he did not only make the word a link because html is hard! This is something Randall [[xkcd_Header_text#2014-07-23_-_what_if.3F_book_tour|often comments on]].
*****The link in the text goes to a contest page that starts with the words:
*****[https://web.archive.org/web/20220718171904/https://sites.prh.com/whatif2 Want Randall Munroe to answer you What If? question?]
*****Here above the web archive version of the link, in case the link from the text goes dead in the future.
****The right image is a link that goes to a dedicated page on xkcd about [https://xkcd.com/what-if-2/ what if? 2: the book].
**The header stayed the same until [https://web.archive.org/web/20220816124823/https://xkcd.com/ 2022-08-16].
***This was while [[2659: Unreliable Connection]] was up.

===2022-07-19 - Preorder What if? 2===
*[https://web.archive.org/web/20220719153239/https://xkcd.com/ 2022-07-19]
**[[2647: Capri Suns]] came out as it changed.
*The header looked a lot like the previous one, only part of the text changed.
**The header thus still consist of two part. To the left a line of text (split up, most likely over four lines for most users). And to the right the window also used in [[#2022-01-10 - Standard text with countdown|the countdown]], but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plan is the book title in white text.
**The text:
***Preorder What If? 2 (all US preorders eligible) and [https://sites.prh.com/whatif2 enter our contest] for a chance to win a dedicated comic and What If blog post!
***what if? 2
****The image is a link that goes to a dedicated page on xkcd about [https://xkcd.com/what-if-2/ what if? 2: the book].
***The link in the text goes to a contest page that starts with the words:
****[https://web.archive.org/web/20220718171904/https://sites.prh.com/whatif2 Want Randall Munroe to answer you What If? question?]
****Here above the web archive version of the link, in case the link from the text goes dead in the future.
**The header stayed the same until [https://web.archive.org/web/20220810034709/https://xkcd.com/ 2022-08-10].
***This was while [[2656: Scientific Field Prefixes]] was up.

===2022-01-31 - What if? 2===
*[https://web.archive.org/web/20220201000434/https://xkcd.com/ 2022-02-01]
**[[2575: What If? 2]] came out as it changed, and then it [https://www.explainxkcd.com/wiki/images/3/36/Countdown_in_header_text_page_when_what_if_comic_came_out.png looked like this] already on 2022-01-31. But there is no archived version from that day after the header changed.
***This was what [[#2022-01-10 - Standard text with countdown|the countdown]] had been counting down to.
***An announcement that Randall had written a sequel to the first ''[[What If? (book)|What If?]]'' book, based on his blog.
**The header consist of two part. To the left a line of text (split up, most likely over three lines for most users). And to the right the window also used in the countdown, but with the image that appeared in it after the count down ended.
***The image is taken from the front cover of the new book, with red background, showing a passenger plane taking off with the wheels still down. On top of it a Tyrannosaurus Rex has begun eating its way into the plane. Below the plan ia the book title in white text.
**The text:
***What If? 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions comes out 9/13. Preorder [https://xkcd.com/what-if-2/ here!]
***What If? 2:
****The link goes to a dedicated page on xkcd about what if? 2: the book. The image is also a link to this page.
****The entire comic that came out along with the new header text is also a link to that page.
**At the same time the [[Design_of_xkcd.com#xkcd_links|xkcd links]] in the top left section of xkcd also changed to include links to books, and especially this new book.
*It will be interesting to see how long this version of the promotion for the new books stays up. But most likely there will be promotion for the book until release, and then more after the release.
**The header stayed the same until [https://web.archive.org/web/20220718145816/https://xkcd.com/ 2022-07-18], for more than 5,5 month. This was while [[2646: Minkowski Space]] was up.
***The change was rather small, but part of the text changed. The promotion continued though.

===2022-01-10 - Standard text with countdown===
*[https://web.archive.org/web/20220110183238/https://xkcd.com/ 2022-01-10].
**[[2565: Latency]] was still up when the [[Countdown in header text]] was added.
**The text was still the standard xkcd header: xkcd updates every Monday, Wednesday, and Friday.
**But a countdown was added. This was inserted in a rectangular box, placed at the end of the standard header text.
***In some browsers the box forces the last word "Friday" to jump down to the next line.
**Inside the box the following time was displayed in the version in the link:
***20d 20h 27m
****This clock will also count down every minute, although it will return to the time at the time of archive when reloaded!
****While this was edited into this wiki the time had changed to 20d 19h 12m. So it was a very fresh download in the web archive, only about 1 hour old when it was updated to this wiki.
****The minutes change without refreshing the page, and follows this editors computers clock exactly, so it will end at 59 minutes, not at a full hour.
***It looks like it started on [https://munvoseli.github.io/xkcd-countdown/ 01-10 17:00 UTC].
****A calculation shows that this countdown will reach zero on Monday 2022-01-31 at 14:59 (2:59 PM) {{w|UTC}}.
****This will be at 9:59 (9:59 AM) in [[Randall]]'s home town
*****The last ten minutes it switched to seconds for the last minute so it made the switch 15:00 UTC 10:00 in Boston!
****From that it can be deduced that the count started at 20d 22h 0m
*****The first image on the archive thus came 1h 33m after the count began.
**At [https://web.archive.org/web/20220111153818/https://xkcd.com/ 2022-01-11] a diagonal black bar appeared in the lower left-hand corner of the countdown box.
***After that the [[Countdown in header text]] page was created and any further development on the count down will be mentioned on that page.
*It was last up on [https://web.archive.org/web/20220131124817/https://xkcd.com/ 2022-01-31] when [[2574: Autoresponder]] was on the front page.
**This archived version was when the counter was at 0d 2h 11m, and the last normal frame was already up at this time.
***It stayed like this until the [https://www.explainxkcd.com/wiki/images/1/17/Countdown_in_header_text_page_0_seconds.png counter ran out].
****Then for a few minutes the final frame, that revealed that all this was a promotion for Randall's new book what if? 2 was up [https://www.explainxkcd.com/wiki/images/4/48/Countdown_in_header_text_page_just_after_countdown.png while the Friday comic was still up].
****Then when the new Monday comic came out with the promotion for what if? 2, the header changed.

===2022-01-08 - Back to standard text===
*[https://web.archive.org/web/20220108044654/https://xkcd.com/ 2022-01-08].
**[[2565: Latency]] came out around the time the new header text appeared, on a Friday!
**The text returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**This was the first time since [[#2018-11-07 - Back to standard text|2018-11-07]] that the text had changed back to that, and at that time it lasted until 2019-02-05.
***That is 1067 days (less than a month short of three years) without the standard text! (Can it be called standard anymore?)
**It was only left in the complete standard version until [https://web.archive.org/web/20220109030513/https://xkcd.com/ 2022-01-09] when Latency was still on the front page.
***Then the next day a [[#2022-01-10 - Standard text with countdown|countdown]] was added to it.
****That was after the weekend on Monday but before the Monday comic came up.
****So only during the weekend was it normal standard header text.

===2021-12-20 - What If in stock===
*[https://web.archive.org/web/20211220211220/https://xkcd.com/ 2021-12-20].
**[[2557: Immunity]] came out around the time the new header text appeared.
**The text:
***For anyone trying to find What If? this year, it's in stock at [https://www.barnesandnoble.com/w/what-if-serious-scientific-answers-to-absurd-hypothetical-questions-randall-munroe/1118864093 Barnes & Noble], [https://m.booksamillion.com/p/What-If/Randall-Munroe/9780544272996 Books-a-Million], and [https://bookshop.org/books/what-if-serious-scientific-answers-to-absurd-hypothetical-questions-9781483041827/9780544272996 Bookshop]
**Each store name is a link to the corresponding store's page for ''[[What If? (book)|What If?]]''.
*It was last seen on [https://web.archive.org/web/20220106100957/https://xkcd.com/ 2022-01-06] when [[2564: Sunshield]] was up.

===2020-06-03 - Black Lives Matter===
*[https://web.archive.org/web/20200604003700/http://xkcd.com/ 2020-06-03].
**[[2315: Eventual Consistency]] came out as a new header text was finally inserted after almost two months without one.
**Cueball is standing to the left and speaks a single line of text: "Black Lives Matter"
**To the right is a gray link button with text: "[https://www.joincampaignzero.org/ How To Help]."
**As always, the entire image (which is only below the xkcd logo) is a link
***The button is thus not needed, but it will also work when clicking the location of the button.
**The link goes to [https://www.joincampaignzero.org/ Join Campaign Zero].
***{{w|Black Lives Matter}} is a loose, grassroots, decentralized confederation of groups and individuals advocating for racial justice. It arose in 2013 after the acquittal of {{w|George Zimmerman}}, who took the life of {{w|Trayvon Martin}}.
***Randall's featuring Black Lives Matter came on the heels of the {{w|Killing of George Floyd}} on May 25th 2020, which had sparked {{w|George Floyd protests|protest in the US}}
***Floyd died while saying "{{w|I can't breathe}}," which was already used due to other Black men's killings, the first was from the {{w|Killing of Eric Garner}}, back in 2014.
*It stayed like this until [https://web.archive.org/web/20200616114945/https://xkcd.com/ 2020-06-16] when [[2320: Millennium Problems]] was up.
**Then on [https://web.archive.org/web/20200617131438/https://xkcd.com/ 2020-06-17] the link changed to [https://blacklivesmatter.com/ Black Lives Matter]. [[2320: Millennium Problems]] was still on the front page on that day.
*On April 1st 2021 the front page header changed to mention who made the April Fools' comic.
**But this was only for this comic [[#Checkbox|Checkbox]].
**The rest of the pages kept the BLM header and it returned to this on the front page once the next comic was released on April 5th. At that time it will have been up for 13 months, making it the longest header different from the standard header.
*It was last up on [https://web.archive.org/web/20211219202204/https://xkcd.com/ 2021-12-19] when [[2556: Turing Complete]] was on the front page.
**At that time it had been up for 564 days or 1,5 year plus 16 days! This is most likely a record.

===2020-04-05 - Empty header===
*[https://web.archive.org/web/20200405042955/https://xkcd.com/ 2020-04-05].
**[[2289: Scenario 4]] came out and the header belonging to the previous comic was removed.
**But no new header was inserted. Not even the go to [[#Header text|Header text]] about the release days of xkcd.
***Since the previous header was related only to the [[:Category:April fools' comics|April fools' comic]] [[2288: Collector's Edition]], and that had stopped the promotion of the [[How To]] book, after first experiencing problems with it's release, it seems Randall forgot what he usually put in the header.
*It stayed empty like this until [https://web.archive.org/web/20200602213017/https://xkcd.com/ 2020-06-02] when [[2314: Carcinization]] was on the front page.
**So almost two month without a header. This had not happened before.

===2020-04-04 - Put together by===
*[https://web.archive.org/web/20200404014814/http://xkcd.com/ 2020-04-04].
**[[2288: Collector's Edition]] came out and the header changed.
**The text:
***Today's comic was put together by [https://chromakode.com/ Max Goodhart], [https://twitter.com/Aiiane Amber], [https://twitter.com/bstaffin Benjamin Staffin], [https://twitter.com/cotrone Kevin], [https://www.instagram.com/fading_interest/ @fading_interest], [https://twitter.com/wirehead2501 Kat], [https://twitter.com/zigdon @zigdon], and Christopher Night.
****All names have links except the last.
**It thanks those that helped Randall create this years [[:Category:April fools' comics|April fools' comic]], which had taken two extra days before it was released due to the complex nature of the comic.
*Due to the delay the next comic, [[2289: Scenario 4]], was released already the day after the Fool's comic, even though it was thus [[2289:_Scenario_4#Trivia|on a Saturday]]!
**Since this header was related only to the Fool's comic, it was thus removed from the general header, but it stayed up as [[#Collector.27s_Edition|one of]] the permanent [[#Unique_header_text|unique header texts]].
***However, when it was removed from the general header, the header was left empty.
***Unlike some other headers that stayed on a given comic, this one was on all comics for the duration of the time it stayed on the front page, see for instance the previous comic on [https://web.archive.org/web/20200403232031/https://xkcd.com/2287/ 2020-04-03].

===2020-04-02 - Technical Reasons===
*[https://web.archive.org/web/20200402234828/https://xkcd.com/ 2020-04-02].
**[[2287: Pathogen Resistance]] was up when the header changed.
*Randall turned out to, again, have problems with his complicated and interactive [[:Category:April fools' comics|April fools' comic]] for 2020.
**The text:
***Note: For technical reasons Wednesday's comic will be posted Thursday instead. Apologies for the delay!
*This finally stopped the promotion of the [[How To]] book.
**It had then been part of the header for well over a year since [http://web.archive.org/web/20190206060904/https://xkcd.com/ 2019-02-06].
*It stayed up a day longer than planed as the fool's comic, [[2288: Collector's Edition]] was first released on Friday, so the note was still up on [https://web.archive.org/web/20200403012612/https://xkcd.com/ 2020-04-03].
**[[2287: Pathogen Resistance]] thus stayed two extra day on the front page, and the third comic of that week, [[2289: Scenario 4]] was released already the day after the Fool's comic, even though it was thus [[2289:_Scenario_4#Trivia|on a Saturday]]!

===2020-01-16 - How To explores - again===
*[https://web.archive.org/web/20200116190038/https://xkcd.com/ 2020-01-16].
**[[2255: Tattoo Ideas]] was still up when the header changed.
**The ongoing promotion of the book continued but here more than three weeks after Christmas the reference to Christmas was removed.
**The header then returned to the one from before Christmas:
***[[#2019-11-22 - How To explores|How To explores]] - see that for all other details.
*It was last up on [https://web.archive.org/web/20200401221435/https://xkcd.com/ 2020-04-01] when [[2287: Pathogen Resistance]] was on the front page.
**It was the problems with [[:Category:April fools' comics|April fools' comic]] of 2020 that finally stopped the promotion of the [[How To]] book.
**It had then been part of the header for well over a year since [http://web.archive.org/web/20190206060904/https://xkcd.com/ 2019-02-06].

===2019-12-02 - Into Science===
*[https://web.archive.org/web/20191202223745/https://xkcd.com/ 2019-12-02].
**[[2236: Is it Christmas?]] came out when the header changed. Fitting as the change is about Christmas list.
**Still promoting the new [[How To]] book, continuing to make the image a link to the [https://xkcd.com/how-to/ How To book] page on xkcd.
***The links below to order are the same as in the previous header.
***Actually most of the header stays the same with the same four images and the same layout. But the text above has changed completely and the two main text sections between the drawings has changed but only slightly. The description of the images is thus left out, see below. Only new thing is that there are now two red circles connected with a red arrow. The first circle is around the word How To at the end of the first text with the arrow going from that circle to the second circle drawn around the picture of the book.
**The text:
***Is there someone on you Christmas list who's into science? They might like my new book '''''How To'''''
***It explores ridiculous ideas for applying scientific research to everyday problems...
***...And illustrates what would happen if you tried them.
***''Boom''
***You can get it here:
***[https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 B&N], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound], [https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple], [https://www.audible.com/search?advsearchKeywords=How+To+Randall+Munroe&source_code=COMA0213WS031709&SID=PRHA9A5E24CFB--9780525635680 Audible], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/23/trackingcode/PRH3D17167A3B Target]
*It was last up on [https://web.archive.org/web/20200115155040/https://xkcd.com/ 2020-01-15] when [[2255: Tattoo Ideas]] was on the front page.

===2019-11-22 - How To explores===
*[https://web.archive.org/web/20191122214439/https://xkcd.com/ 2019-11-22].
**[[2232: Hotel Room Party]] was up when the header changed. It most likely changed when the comic appeared. Earlier on that day it was the previous header over the previous comic.
**Still promoting the new [[How To]] book, here again making the image a link to the [https://xkcd.com/how-to/ How To book] page on xkcd, after it previously was a link to where to listen to the audio book.
***The links below to order returns to the same as in the header before the previous header with links to audio books, except that the link to an exclusive edition has been removed.
***The header consist of an image with text above five small drawings with two text parts in between them. To the left is the closed How To book which is black with a blue readable title, How To, and unreadable white text below this as well as below the unreadable blue author name, which are below the image. The image shows Cueball putting in a light-bulb with drones under each foot while Megan, holding a ladder, and White/Black Hat are looking up at him. To the right of the book is a drawing of Ponytail pole-vaulting with two black helium filled balloons. Next to her is the first text segment. Then after that is the drawing, seen before in the header text, of a truck towing a house up a steep hill. This truck goes above the second text segment, with Cueball somersaulting above the text. Furthest right, above and just right of the text is an explosion with the sound written inside. Below the header image is some black text and then the links to where to get it as regular blue link text.
**The text:
***My new book '''''How To''''' explores the science behind spacecraft heat shields, butterfly metabolisms, and land border surveys...
***...By imagining ridiculous ideas for applying the research to you everyday life...
***...And illustrating what would happen if you tried them.
***''Boom''
***You can get it here:
***[https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 B&N], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound], [https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple], [https://www.audible.com/search?advsearchKeywords=How+To+Randall+Munroe&source_code=COMA0213WS031709&SID=PRHA9A5E24CFB--9780525635680 Audible], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/23/trackingcode/PRH3D17167A3B Target]
*It was last up on [https://web.archive.org/web/20191201191025/https://xkcd.com/ 2019-12-01] when [[2235: Group Chat Rules]] was on the front page.

===2019-11-06 - Audio clip===
*[https://web.archive.org/web/20191106204314/https://xkcd.com/ 2019-11-06].
**[[2224: Software Updates]] was still up when the header changed, but the first archive version was first from after the next comic came out [[2225: Voting Referendum]].
**Still promoting the new [[How To]] book, here making the image a link to the How To book on Penguin Random House's audio book, where an audio clip read by Wil Wheaton can be sampled.
***The links below to order have now changed to those with audio books.
***The header consist of an image with text, with a "blue link", above the How To book that is being folded out from closed; to partially open; to opened up on two full pages; this takes three images. The closed book is the black book with a blue readable title, How To, and unreadable white text below this as well as below the unreadable blue author name, which are below the image. The image shows Cueball putting in a light-bulb with drones under each foot while Megan, holding a ladder, and White/Black Hat are looking up at him. The partly open book still has this cover partly visible, but unreadable, as well as come unreadable text in the open side. The open book shows two pages with lots of unreadable text and three figures (maybe one is a table). Next to the open book there is an arrow to the right pointing at an audio icon with three audio lines in front. Below the header image are the links as regular text.
**The text:
***You can click here to hear a clip from the audio version of '''''How To''''', read by Wil Wheaton.
***[https://books.apple.com/us/audiobook/how-to-absurd-scientific-advice-for-common-real-world/id1475319694 Apple], [https://www.audiobooks.com/audiobook/how-to-absurd-scientific-advice-for-common-real-world-problems/369279 Audiobooks], [https://www.audible.co.uk/pd/How-To-Audiobook/1473680360?qid=1574679523&sr=1-1&pf_rd_p=c6e316b8-14da-418d-8f91-b3cad83c5183&pf_rd_r=DX3EZ14M14CFQPP9GHJY&ref=a_search_c3_lProduct_1_1 Audible], [https://play.google.com/store/books/details/Randall_Munroe_How_To?id=LzSGDwAAQBAJ Google Play], and [https://libro.fm/audiobooks/9780525635680 Libro.fm]
**The entire image is a link to the [https://www.penguinrandomhouseaudio.com/book/576760/how-to/ How To book on Penguin Random House] page, where the audio clip can he played.
***As always it is the entire picture that is a link, and not only the blue underlined text that says click here!
*It was last on the archive on [https://web.archive.org/web/20191122044456/https://xkcd.com/ 2019-11-22] when [[2231: the Time Before And After Land]] was on the front page. But it was most likely still up when [[2232: Hotel Room Party]] came out. But then changed during the next day.

===2019-10-02 - Horse vs football team===
*[https://web.archive.org/web/20191002005854/https://xkcd.com/ 2019-10-02].
**[[2210: College Athletes]] was up when the header changed.
**Still promoting the new [[How To]] book, but seeing this is no longer close to the release day the focus has changed. This time the image seems to be from one of the How To explanations in the book.
***The links below to order are the same as the previous header.
***But new text is added after the links to promote two events with Randall in New York the two days after this header came up.
****These links disappeared after a week leaving only the picture and the link to buy the book. See below.
***The header consist of an image with Cueball riding bareback on a horse. He comes from the left holding an American football. Running towards him from the right are eight American football players with helmets with three stars on the back of the helmet. Two of the players at the back are almost hidden by players in front of them. Beneath them is a line of text that belongs to the image, the period at the end of the sentence hangs in height with the center line of the last letter E... Then below the image follows the link and promotion of the NY events, these are written in regular.
**The text:
***My new book ''How To'' is out now! You can get it here.
***[https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 B&N], [https://www.barnesandnoble.com/w/how-to-randall-munroe/1130494832?ean=9780525686910#/ B&N Exclusive Edition], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound], [https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple], [https://www.audible.com/search?advsearchKeywords=How+To+Randall+Munroe&source_code=COMA0213WS031709&SID=PRHA9A5E24CFB--9780525635680 Audible], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/23/trackingcode/PRH3D17167A3B Target] I'll be at New York Comic Con! I'm giving [https://www.newyorkcomiccon.com/Explore/Panels/Panels-And-Screenings/#/event/how-todo-anything-with-randall-munroe-creator-of-xkcd a talk on Thursday], and on
***Friday [https://smbc-comics.com/ Zach Weinersmith] and I will be hosting [https://www.caveat.nyc/event/how-to--absurd-scientific-advice-for-common-real-world-problems-10-4-2019 an event at Caveat NYC].
**The image is a link to the [https://xkcd.com/how-to/ How To book page] on xkcd.
***The link to Target still seems to go the main page rather than to [https://intl.target.com/p/how-to-by-randall-munroe-hardcover/-/A-76508342 their How To book page]... Probably a still undiscovered error on Randall's part?
*This header changed, but so slightly that the changes will only be mentioned here rather than in a new section:
**The first link was last active on [https://web.archive.org/web/20191004014438/https://xkcd.com/ 2019-10-04]
**Then the day after only the second link remained from [https://web.archive.org/web/20191005041539/https://www.xkcd.com/ 2019-10-05]. [[2211: Hours Before Departure]] came out when it changed.
***But the text of this link changed as it had been a continues text from one to the other link. Also it was not entirely on it's own line, thus not as with the first link whose text was directly connected to the line with the links to buy the book.
***The new text of that link was:
****[https://smbc-comics.com/ Zach Weinersmith] and I will be hosting [https://www.caveat.nyc/event/how-to--absurd-scientific-advice-for-common-real-world-problems-10-4-2019 an event] Friday night at Caveat NYC!
****The last link was the same, but now it only covered two words not the entire end of the sentence.
***This other link was last active on [https://web.archive.org/web/20191007042707/https://xkcd.com/ 2019-10-07].
**And then the last link was gone by [https://web.archive.org/web/20191008053609/https://xkcd.com/ 2019-10-08], when [[2212: Cell Phone Functions]] came out.
*It ended on [https://web.archive.org/web/20191105164001/https://xkcd.com/ 2019-11-05] when [[2224: Software Updates]] was up.

===2019-09-30 - Tons of fun===
*[https://web.archive.org/web/20190930234245/https://xkcd.com/ 2019-09-30].
**[[2209: Fresh Pears]] was up when the header changed.
**Still promoting the new [[How To]] book, but seeing this is no longer close to the release day the focus has changed to how much fun it was for Randall to write it and how proud he is of the result. Randall, as Cueball, is saying this in the new header image.
***The links below to order are the same, except a new has been added at the end.
***The header consist of an image with Cueball standing to the left of the book, shown as tall as he is. The book is opened up on two pages with lots of unreadable text as well as three drawings, only one of these, with a circle diagram, can clearly be seen. Cueball is speaking, and the text is above him and the book. Two words are blue with a line under as if they where a link. But as always the entire image is a link. Beneath the image is the links on where to order the book.
**The text:
***Writing my new book '''''How To''''' was tons of fun and I'm so proud of the result. It's out now-Click Here to order!
***Order: [https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 B&N], [https://www.barnesandnoble.com/w/how-to-randall-munroe/1130494832?ean=9780525686910#/ B&N Exclusive Edition], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound], [https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple], [https://www.audible.com/search?advsearchKeywords=How+To+Randall+Munroe&source_code=COMA0213WS031709&SID=PRHA9A5E24CFB--9780525635680 Audible], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/23/trackingcode/PRH3D17167A3B Target]
**The image is a link to the [https://xkcd.com/how-to/ How To book page] on xkcd.
***The new link to Target seems to go the main page rather than to [https://intl.target.com/p/how-to-by-randall-munroe-hardcover/-/A-76508342 their How To book page]... Probably an error on Randall's part.
*It ended on October 2nd while [[2210: College Athletes]] where up. But there is no archived versions from the 1st of October and the one from the 2nd is with the next version. But the editor of this was making changes to the explanation of College Athletes before the next header change came along.

===2019-09-11 - How To available===
*[https://web.archive.org/web/20190911053115/https://xkcd.com/ 2019-09-11].
**[[2200: Unreachable State]] was still up when the header changed.
**The release day part of the promotion was changed to telling that the new [[How To]] book was available. With teasers about what is in the book below the heading. On either side of the text a picture of the book is still shown. Also the links below changed, adding three new and removing one old.
***The header consist of an image with the book shown both left and right of some text. Both books have blue title and author name, and white unreadable title and white drawing of Cueball flying on two quadcopters to put in a light-bulb in a ceiling lamp, while White/Black? Hat is watching together with Megan, who is holding a ladder. Beneath the image is the links on where to order it.
***Between the two books are two sections of text above each other, the lover with smaller font.
**The text:
***How To is available now!
***Learn how to open bottles with nuclear weapons and how to be on time for meetings by altering the Earths rotation. The book also features advice from real-life experts including Chris Hadfield and Serena Williams.
***Order: [https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 B&N], [https://www.barnesandnoble.com/w/how-to-randall-munroe/1130494832?ean=9780525686910#/ B&N Exclusive Edition], [http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple], [https://www.audible.com/search?advsearchKeywords=How+To+Randall+Munroe&source_code=COMA0213WS031709&SID=PRHA9A5E24CFB--9780525635680 Audible]
**The image is a link to the [https://xkcd.com/how-to/ How To book page] on xkcd.
**{{w|Serena Williams}} is a famous tennis player who was also featured in one of the [[:Category:Book promotion|promotion comics]] for How To: [[2190: Serena Versus the Drones]]
**{{w|Chris Hadfield}} is a Canadian retired astronaut, engineer, and former Royal Canadian Air Force fighter pilot. The first Canadian to walk in space, Hadfield has flown two Space Shuttle missions and served as commander of the International Space Station.
***The new link to audible probably needs the user to be signed up, else it will go to the front page and ask yo to sign up. But from the archive the page can be seen [https://web.archive.org/web/20190923004816/https://www.audible.com/search?advsearchKeywords=How+To+Randall+Munroe&source_code=COMA0213WS031709&SID=PRHA9A5E24CFB--9780525635680 here].
*Up till [https://web.archive.org/web/20190922143253/https://xkcd.com/ 2019-09-22] it looked like this.
**Then on [https://web.archive.org/web/20190923145251/https://xkcd.com/ 2019-09-23] and extra link was added after Audible:
***[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/23/trackingcode/PRH3D17167A3B Target].
**[[2205: Types of Approximation]] was up when this change occurred during a weekend.
*It ended on [https://web.archive.org/web/20190929223547/https://xkcd.com/ 2019-09-29] when [[2208: Drone Fishing]] was up.

===2019-09-04 - Happy Release Day - bookstore===
*[https://web.archive.org/web/20190904051509/https://xkcd.com/ 2019-09-04].
**[[2198: Throw]] was already up when the header changed slightly, as the text below Happy release day changed.
*Most of the header stayed the same as the [[#2019-09-03 - Happy Release Day - calender|day before]], but the reference to the Gregorian/Julian calender was changed.
**The header consist of an image with the book shown both left and right of some text.Both books have blue title and author name, and white unreadable title and white drawing of Cueball flowing on two quadcopters to put in a light-bulb in a ceiling lamp, while White/Black? Hat is watching together with Megan comes who is holding a ladder. Beneath the image is the link on where to order it, now the preorder has been changed to order.
***Between the two books are two sections of text above each other, the lover with smaller font and in brackets.
**The text:
***Happy How To release day!
***Available wherever books are sold.
***(Mostly bookstores, I assume but you can always try your luck at Wendy's.)
**See below for any other details.
*It ended on [https://web.archive.org/web/20190909211737/https://xkcd.com/ 2019-09-09] when [[2200: Unreachable State]] was up.

===2019-09-03 - Happy Release Day - calendar===
*[https://web.archive.org/web/20190903051503/https://xkcd.com/ 2019-09-03]
**[[2197: Game Show]] was still up when the header changed, but it was for sure to coincide with [[2198: Throw]] which came out later on the release day while it still looked like in this version.
**Randall celebrated the release day of [[How To]], coming out the day the header changed.
***The comic is also a reference to a chapter in the book on how to throw things. A very complicated interactive comic where different persons or other living things can be chosen to throw dead or living things. The trow will then be shown below with distance measured in two units, normal and special. That is if the thrower can actually manage to throw the thing.
**The header consist of an image with the book shown both left and right of some text. The two black books have red stars around them, five on the outer side of the image and 6 on the inner, the stars are mirrored around left and right book. Both books have blue title and author name, and white unreadable title and white drawing of Cueball flying on two quadcopters to put in a light-bulb in a ceiling lamp, while White/Black? Hat is watching together with Megan, who is holding a ladder. Beneath the image is the link on where to order it, now the preorder has been changed to order.
***Between the two books are two sections of text above each other, the lover with smaller font and in brackets.
**The text:
***How To Randall Munroe
***Happy How To release day!*
***(*Gregorian calendar. The Julian edition doesn't come out for 13 more days.)
***How To Randall Munroe
***Order: [https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 Barnes & Noble],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple Books]
**The image is a link to the [https://xkcd.com/how-to/ How To book page] on xkcd.
**Most of the world uses the {{w|Gregorian calendar}}, but before it was taken into use, the {{w|Julian calendar}} was in use.
***The Julian calendar does not take into account that every 100 years a leap year should be passed as in the Gregorian calendar, and thus it is at the moment 13 days behind, as it has has this many February 29th too many. Since there should actually be a leap year every 400 year, and the last of those was 2000, then it has been 13 days since 1900, and will stay like this until 2100 when it will become 14 days.
***The image is a link to the [https://xkcd.com/how-to/ How To book page] on xkcd.
**Already the next day the part of the header below happy release day about the Gregorian calender changed. See [[#2019-09-04 - Happy Release Day - bookstore|above]].

===2019-08-27 - Out in a week===
*[https://web.archive.org/web/20190827082224/https://xkcd.com/ 2019-08-27].
**[[2194: How to Send a File]] was up when the header changed.
**Randall continues to promote his new book, [[How To]], coming out a week from this header.
***It is only three lines of text
**The text:
***My new book, How To, comes out next week!
***Read an exclusive excerpt about transmission [https://blog.xkcd.com/2019/08/26/how-to-send-a-file/ here].
***[Four links in gray blue are given with the first words in black:] Preorder ''How To'': [https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 Barnes & Noble],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple Books]
**Later [https://web.archive.org/web/20190827184229/https://xkcd.com/2194/ on the same day], (and here for the next day [https://web.archive.org/web/20190828095401/https://xkcd.com/ 2019-08-27] for the front page), more text and links where added, plus the order of the text was changed.
**The later text was:
***My new book, [https://xkcd.com/how-to/ How To], comes out in a week! ([https://blog.xkcd.com/2019/08/23/book-tour-and-contest-winner/ Book tour info])
***You can preorder it now to get a copy when it's released:
***[https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 Barnes & Noble],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple Books]
***You can also read an exclusive excerpt about file transfers [https://blog.xkcd.com/2019/08/26/how-to-send-a-file/ here].
**The link to the book tour also include the winner of the [[#2019-06-25 - People with books|contest]] to get Randall to add "your" city to his book tour.
***The winner was {{w|Juneau, Alaska}}.
*It ended on the release day 2019-09-03, so this was last on the page on [https://web.archive.org/web/20190902042108/https://xkcd.com/ 2019-09-02].

===2019-08-06 - Win a sketch===
*[http://web.archive.org/web/20190806052948/https://xkcd.com/ 2019-08-06].
**[[2185: Cumulonimbus]] was up when the header changed.
***Most likely the header changed when that comic came out on 2019-08-05. But the previous header was also out during that day.
**Randall continues to promote his new book, [[How To]], now making a competition where you can win a stick figure sketch of yourself. (Although only for US residents!)
***The image shows Hairy, with a cat at his feet and Megan (or Danish?) with a samurai sword. They are standing with their backs towards each other, the cat on the left, Megan facing right with the sword towards the words.
***Below the drawing are links to places to preorder the book.
**The text:
***Want to win a sketch of yourself as a stick figure? [https://blog.xkcd.com/2019/08/05/win-an-xkcd-sketch/ Click here] to find out how!
***[Four links in gray blue are given with the first words in black:] Preorder ''How To'': [https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 Barnes & Noble],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple Books]
****The entire picture is a [https://blog.xkcd.com/2019/08/05/win-an-xkcd-sketch/ link] to a [[Blag]] post: ''Win an xkcd sketch''
****That is even though only the click here part of the text is in blue, like a link.
****Cause as he often has written: I still haven't figured out HTML imagemaps, most recently in the [[#2019-07-09 - Drawings from How To|2019-07-09]] header.
*The header stayed like this until [https://web.archive.org/web/20190826062701/https://www.xkcd.com/ 2019-08-26] when [[2193: Well-Ordering Principle]] was up.

===2019-08-03 - First look inside===
*[http://web.archive.org/web/20190803222711/https://xkcd.com/ 2019-08-03].
**[[2184: Unpopular Opinions]] was up when the header changed.
**Randall continues to promote his new book, [[How To]], now stating that it comes out next month.
***Set to be released on September 3rd 2019, this update was made exactly one month before.
***The image shows text to the left of three drawings of the book: First the closed book showing the black front cover with blue and white text and white drawings, then the book is partly opened, and finally it lays opened up showing two pages, with a readable heading on the right page.
***Below the drawing are links to places to preorder the book.
**The text:
***My new book comes out next month. Click here for a first look inside!
***[On the books front cover only two thins can be read:]
****How To
****Randal Munroe.
***[These two words can also partly be read on the opening book.]
***[Only the large heading can be read on the right page of the open book:]
****How to Dig a Hole.
***[These two pages also became part of a special comic relased during the weekend when this header was up: [[Disappearing Sunday Update]].]
***[The [[Disappearing_Sunday_Update#Transcript|transcript of that comic]] describes the images in the open book.]
***[Four links in gray blue are given with the first word in black:] Preorder:[https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 Barnes & Noble],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple Books]
****The entire picture is a [https://blog.xkcd.com/2019/08/02/how-to-chapter-list-and-introduction/ link] to a [[Blag]] post: ''How To: Chapter list and introduction''.
*It stayed up like this while the special [[Disappearing Sunday Update]] came out on Sunday 2019-08-04, and was there still on Monday [ http://web.archive.org/web/20190805050812/https://www.xkcd.com/ 2019-08-05], at least during the time that the Sudan Update was still up.
**When the next comic came out late that Monday, it probably disappeared along with the Disappearing comic, but the first update with the next header is from Tuesday [http://web.archive.org/web/20190806052948/https://xkcd.com/ 2019-08-06], but the Monday comic [[2185: Cumulonimbus]] was still on the front page at that time,.

===2019-07-23 - Back to previous header===
*[http://web.archive.org/web/20190723205152/https://xkcd.com/ 2019-07-23].
**[[2179: NWS Warnings]] was up when the header changed.
*It returned to the previous header from before the ComicCon header, see [[#2019-07-10 - Adding links|2019-07-10]]
*It stayed up until [http://web.archive.org/web/20190802192259/https://xkcd.com/ 2019-08-02] while [[2184: Unpopular Opinions]] was up. The day after when it changed that comic was still up.

===2019-07-15 - ComiCon===
*[http://web.archive.org/web/20190715181016/http://xkcd.com/ 2019-07-15].
**[[2176: How Hacking Works]] was up when the header changed.
*Randall tells that he will be at ComicCon and links to his plans there.
**The text:
***Going to San Diego Comic Con this week? I'll [https://blog.xkcd.com/2019/07/15/san-diego-comic-con/ see you there]!
****The link is to a [[Blag]] post about his plans for the ComicCon
**Randall appeared in a couple of panels, and gave a talk.
**Finally he also handed out signed copies of his new [[How To]] book more than a month before official release.
***So still promoting the book, also in this header...
*It stayed up until [http://web.archive.org/web/20190722192637/https://www.xkcd.com/ 2019-07-22] the day after the ComiCon ended, while [[2178: Expiration Date High Score]] was up.
**Then it returned to the previous header from before the ComicCon announcement when [[2179: NWS Warnings]] came out.

===2019-07-10 - Adding links===
*[http://web.archive.org/web/20190710165920/https://xkcd.com/ 2019-07-10].
**[[2173: Trained a Neural Net]] was still up when the header changed slightly from that fro the day before.
**Only change was that beneath the picture, see [[#2019-07-09 - Drawings from How To|2019-07-09]], there is now a list of four links to companies where the book can be preordered.
**The extra text:
***[Four links in gray blue are given with the first word in black:] Preorder:[https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 Barnes & Noble],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple Books]
*Note that the day after this change, [https://web.archive.org/web/20190711172451/https://xkcd.com/ 2019-07-11], a link to [[How To]] was added to the [[Design_of_xkcd.com#xkcd_links|links]] in the top left corner of xkcd.
*The header stayed like this until [http://web.archive.org/web/20190714175710/https://xkcd.com/ 2019-07-14] when [[2175: Flag Interpretation]] was up. When it changed the day after [[2176: How Hacking Works]] was up.

===2019-07-09 - Drawings from How To===
*[http://web.archive.org/web/20190709162102/https://xkcd.com/ 2019-07-09].
**[[2173: Trained a Neural Net]] was up when the header changed.
**Randall continues to promote his new book, [[How To]].
***The image shows a small picture of his book with text on either side.
***Below are what appears to be three drawings from the book. [[Ponytail]] pole vaultig with three baloons in one hand, then text, then a truck with a house behind it speeding fast up a hill then text and finally [[Cueball]] somersaulting towards an explosion.
***To the right there is a big blue button to click for preorder, with text below.
**The text:
***New book [Arrow points to book. Title can be read: How To]
***How To: Absurd Scientific Answers to Common Real-world Problems
***It's a guide to bad ways to do things...
***...And what would happen if you tried them.
***''Boom''
***Click here to preorder
***Or click anywhere. I still haven't figured out HTML imagemaps.
****The entire picture is a [https://xkcd.com/how-to/ link] to the official [[How To]] page on xkcd: https://xkcd.com/how-to/
****See [[1572: xkcd Survey]] where Randall mentions that he cannot make imagemaps.
*It stayed up like this only for a day, then an extra line of links was added the day after while the same comic was still up, see [[#2019-07-10 - Adding links|2019-07-10]].
**But the general header stayed up first for five days, and then it returned again for 10 more days after a break to announce a [[#2019-07-15 - ComiCon|ComiCon visit]].
**So a total of 16 days with this drawing.

===2019-06-25 - People with books===
*[http://web.archive.org/web/20190625190843/https://xkcd.com/ 2019-06-25].
**[[2167: Motivated Reasoning Olympics]] was up when the header changed.
**Randall continues to promote his new book, [[How To]], and his book tour.
***The image now shows 15 people standing side by side each holding a book up in front of them with unreadable titles.
***From left: [[Megan]], [[Cueball]], a man with blonde hair, [[Jill]], [[Blondie]], [[Hairy]], another Hairy, [[White Hat]], a kid with curly hair, [[Hairbun]], another Cueball, another Megan, a guy with a knit cap, [[Ponytail]], and [[Beret Guy]].
***Above them is a text message.
**The text:
***Want to bring me to your town for my '''''How To''''' book tour? Click to find out how to enter the challenge!
****The entire picture is a [https://blog.xkcd.com/2019/06/10/book-tour-announcement/ link] to the official book tour announcement posted on the [[Blag]], with all cities and dates listed with details.
****In the link it is explained how to enter a competition on how to bring Randall to your city.
****Make a story using only book titles and get the books used to be held up by different individuals.
****A longer sentence will improve your chances.
*****This is indeed what this header picture shows.
*The header stayed like this until [http://web.archive.org/web/20190708155517/https://xkcd.com/ 2019-07-08] when [[2172: Lunar Cycles]] was up. When it changed the day after [[2173: Trained a Neural Net]] was up.

===2019-06-15 - Adding dates===
*[http://web.archive.org/web/20190615100645/http://xkcd.com/ 2019-06-15]
**[[2163: Chernobyl]] was up when the header changed.
**Randall only made a small change to the one that had been up for four days at this time.
**The text only changed by adding a line below the first line:
***Announcing the '''''How To''''' book tour:
***[Click here for dates and tickets]
****The rest of the header is exactly the same as on [[#2019-06-11 - Book tour|2019-06-11]], except everything is a bit smaller to make room in the same place for the extra line.
****The link is not located on the blue part of the text and it was already there before this update.
****Best guess is that not many clicked through and Randall then made it obvious that there was a link.
****The entire picture is a [https://blog.xkcd.com/2019/06/10/book-tour-announcement/ link] to the official book tour announcement posted on the [[Blag]], with all cities and dates listed with details.
****Randall has previously made it clear, in [[1572: xkcd Survey]], that he knows how to make an image a link, but not how to put the link only where he says to click. But it is easier to make a place for people to click than tell them this...
*The header stayed like this until 2019-06-25, when it changed while [[2167: Motivated Reasoning Olympics]] was up. But this one was still up when that comic came out the day before [http://web.archive.org/web/20190624162740/https://xkcd.com/ 2019-06-24].

===2019-06-11 - Book tour===
*[http://web.archive.org/web/20190611031920/https://xkcd.com/ 2019-06-11]
**[[2161: An Apple a Day]] was up when the header changed.
***'''Note''' when this change happened two new links was added to the [[Design_of_xkcd.com#xkcd_links|xkcd links]] section of xkcd.
**Randall changed the header text to announce the official book tour for his newest book ''[[How To]]'' to be released 3 months later.
**The text:
***Announcing the '''''How To''''' book tour:
***[Below this header is a map of the mainland USA with 14 labeled black dots indicates the 14 cities that the book tour will take Randall to. One red dot with five red question marks above is located beneath the map to the left, indicating a 15th city to be chosen in a contest. Above the map to the right is a small picture of the book with the blue title on the black cover. Above the book is the release date and with an arrow pointing down to the book.]
***September 3rd
***How to
***Seattle
***Portland
***San Francisco
***Santa Cruz
***Los Angeles
***Salt Lake City
***Kansas City
***Ann Arbor
***Cincinnati
***Louisville
***Cambridge
***New York
***D.C.
***Raleigh
***????? (Chosen by readers)
***[The entire picture is a [https://blog.xkcd.com/2019/06/10/book-tour-announcement/ link] to the official book tour announcement posted on the [[Blag]], with all cities and dates listed with details.]
****In the link it is explained how to enter a competition on how to bring Randall to your city.
****Make a story using only book titles and get the books used to be held up by different individuals.
****Only US cities can apply.
**The header only stayed exactly like this for three days, and was still up on [http://web.archive.org/web/20190614094729/https://xkcd.com/ 2019-06-14] when [[2162: Literary Opinions]] was on the front page.
***Then it changed slightly to indicate that the picture was a link which was not clear before. See above.

===2019-05-17 - Back to previous header===
*[http://web.archive.org/web/20190517103928/https://xkcd.com/ 2019-05-17]:
**[[2150: XKeyboarCD]] was still up when the header changed.
*It changed back to the exact same heading as before the one with Google reader here below.
**See [[#2019-02-06 - How to book|2019-02-06]] below for all details.
**It stayed up for more than three weeks and was still up on [http://web.archive.org/web/20190610055519/https://www.xkcd.com/ 2019-06-10], while [[2160: Ken Burns Theory]] was still up on the day the next comic [[2161: An Apple a Day]] was to be released (where the new header could be found at least the next day, but maybe from the release of that comic?). Then it changed to announce the book tour for his new book.

===2019-04-23 - Google Reader===
*[http://web.archive.org/web/20190423155458/https://xkcd.com/ 2019-04-23]:
**[[2140: Reinvent the Wheel]] came out when it changed, ending a more than two and half month long [[#2019-02-06 - How to book|promotion]] of Randall's new book [[How To]].
**Randall changed the header text to ask if the reader still mourned the loss of {{w|Google Reader}} which closed on 2013-07-01, almost 6 years before this comic..
***He offers the possibility to sign up to receive the newest comic by e-mail.
**The comic may have relation to this, as some where using Google reader for different purposes when they closed it, without any chance of [https://www.google.com/reader/about/ getting your data out].
***The comic "Reinvent the Wheel" mentions that using external dependencies carry risks, such as Google closing down a feature. given the fact that the comic came out as the header changed it is probably not a coincidence.
**The text:
***Still mourning the demise of Google Reader? You can sign up to get new comics delivered by email [https://xkcd.com/newsletter/ here].
**The link is to https://xkcd.com/newsletter, where it is possible to submit your e-mail address and press a subscribe button.
***the following text is written above it:
***To receive the comic and news postings in your inbox, subscribe here.
**It stayed up for more than three weeks and was still up on [http://web.archive.org/web/20190516100403/https://xkcd.com/ 2019-05-16], when [[2150: XKeyboarCD]] was up. Then it changed back to the promotion of his new book.

===2019-02-06 - How to book===
*[http://web.archive.org/web/20190206060904/https://xkcd.com/ 2019-02-06]:
**[[2107: Launch Risk]] was up at the time when it changed, having been up since Monday the 4th of February.
***Here it can be seen being on the front of xkcd on [http://web.archive.org/web/20190205050302/https://xkcd.com/ 2019-02-05], without the new text. This was also the last time the standard header text was used in several months.
***[[2108: Carbonated Beverage Language Map]] came up later on the day the header changed.
**Randall changed the header text to promote his newest book ''[[How To]]'' to be released 7 months later.
***He added an image of the book with large text next to it regarding the release and links on how to preorder it.
***There was no direct relation to the comics released at the time, except of course that he kind of launched his new book with all the risk it involves, while having a comic called launch risk up. It was though a very different and more real type of launch risk (of a human carrying space rocket) in the comic.
**The text:
***[The book is shown to the left as a black rectangle with large blue text and smaller gray text. On the book cover, in white drawings, are seen Megan with a ladder and either Black or White Hat (hard to say on black background). Both are looking up on Cueball who is floating in the air with a quadcopter beneath either leg, trying to plug in an electric light bulb in a naked lamp hanging down near him. It seems he has already removed the broken light bulb, as he has one in both hands. And now he tries to put in the new one. He could have let Megan use the ladder...]
***[The header in blue above it all:] How To.
***[Sub header in gray to the left of Cueball:] Absurd Scientific Answers to Common Real-world Problems
***[Author name in blue below the drawing:] Randall Munroe
***[Sub header to this below in gray:] Creator of xkcd
***[Sub header to this below in gray:] Author of what if? and Thing Explainer
***[Next to this book image are the following text:]
***[Large heading:] HOW TO
***[Normal size sub header:] Absurd Scientific Answers to Common Real-world Problems
***[In smaller gray font below:] Available September 3, 2019.
***[Four links in gray blue are given with the first word still in gray:] Preorder:[https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/ Amazon],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429 Barnes & Noble],[http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom IndieBound],[https://itunes.apple.com/us/book/how-to/id1451461524?mt=11 Apple Books]
**It stayed up for more than two and a half month and was still up on [http://web.archive.org/web/20190422030324/https://xkcd.com/ 2019-04-22], when [[2139: Email Settings]] was up. Then it finally changed to a new header without going back to the standard.

===2018-11-07 - Back to standard text===
*[http://web.archive.org/web/20181107144453/https://www.xkcd.com/ 2018-11-07]
**The text returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**It stayed like this until [[2107: Launch Risk]] was up on [http://web.archive.org/web/20190205050302/https://xkcd.com/ 2019-02-05], so two days less than three months.
***After this it did not return to the standard text for almost three years, but just short of a month before the third year without it, it returned on [[#2022-01-08 - Back to standard text|2022-01-08]].

===2018-11-06 - Election Day===
*[http://web.archive.org/web/20181106122850/https://xkcd.com/ 2018-11-06]:
**[[2068: Election Night]] (on election day the day after this comic was released).
***It added a larger comic above the two links from the previous header. Those links of the previous header text was still up the day before [http://web.archive.org/web/20181105105855/https://xkcd.com/ 2018-11-05], when [[2067: Challengers]] was still up.
**Randall changed the xkcd header once more to try to make more people vote, and in this case help others to vote.
***Once again directly related to the new comic about election night.
**The text:
***[A line of altering blue and red stars, blue first and last of two rows of nine starts around of the heading:]
***Election Day!
***[Below Black Hat and Ponytail to the left and Megan to the right of Cueball is checking their smart phones. Cueball is addressing the reader:]
***Cueball: The biggest thing you can do th help is to check in with friends and family and make sure they know when and where they're voting.
***[Below these four characters there is the following text with two arrows pointing left and right. Both are turning up to text/links on either side of the four:]
***Use these links to answer questions
***[To the left:] Where and how to vote: [https://www.vote.org/ Vote-org]
***[To the right:] What's on your ballot: [https://www.ballotready.org/ BallotReady.org]
***[Below was the two links from the previous header:]
***Find out where to vote: [https://www.vote.org/ vote.org].
***See what's on your ballot: [https://www.ballotready.org/ BallotReady.org]
**It was only up one day and thus on ended the day after [http://web.archive.org/web/20181107144453/https://www.xkcd.com/ 2018-11-07] when the next comic [[2069: Wishlist]] came out.
***The text then returned to the standard xkcd header: xkcd updates every Monday, Wednesday, and Friday.
****It stayed like this until [[2107: Launch Risk]] was up on [http://web.archive.org/web/20190205050302/https://xkcd.com/ 2019-02-05].

===2018-11-02 - Where to vote===
*[http://web.archive.org/web/20181103021059/https://xkcd.com/ 2018-11-02]:
**[[2067: Challengers]] (on the Friday, it was released).
***It added another link to the previous header text. That text was still up the day before on Thursday [http://web.archive.org/web/20181102015102/https://xkcd.com/ 2018-11-01].
***That was while comic [[2066: Ballot Selfies]] was still up.
**Randall changed the xkcd header to let people know who is on their voting ballot, and as before there is also a link on how to register for voting.
***This is also directly related to the new comic that came out that day, about helping people to decide who to vote for, i.e. who is on their ballot.
**The text:
***Find out where to vote: [https://www.vote.org/ vote.org].
***See what's on your ballot: [https://www.ballotready.org/ BallotReady.org]
**This was done at this moment because the {{w|United States midterm election}} was held on {{w|United States elections, 2018|Tuesday, November 6, 2018}}, four days after the release of this comic.
**It was still up the day before the election day, [http://web.archive.org/web/20181105105855/https://xkcd.com/ 2018-11-05], and then it changed with the next comic.

===2018-10-22 - Register for voting===
*[http://web.archive.org/web/20181022120935/https://xkcd.com/ 2018-10-22]:
**[[2061: Tectonics Game]] (on a Monday, the 3rd day after release of this Friday comic)
***The standard text was still up Sunday [http://web.archive.org/web/20181021141446/https://xkcd.com/ 2018-10-21].
***The comic [[2062: Barnard's Star]] was released later that day.
**Randall changed the xkcd header to try to get people to register for voting.
**The text:
***Check your registration and find your polling place at [https://www.vote.org/ vote.org].
**This was done at this moment because the {{w|United States midterm election}} was held on {{w|United States elections, 2018|Tuesday, November 6, 2018}}, about two weeks after the release of this comic.
***It is generally believed that many of those not voting would have chosen democrats on election day, and thus Randall has an interest in getting as many as possible to register, see [[1756: I'm With Her]] (apart from the fact that he also most likely thinks that it is important to use the right to vote).
**It ended on [http://web.archive.org/web/20181103021059/https://xkcd.com/ 2018-11-02], when [[2067: Challengers]] came out.
***It was still there while [[2066: Ballot Selfies]] was still up the day before on [http://web.archive.org/web/20181102015102/https://xkcd.com/ 2018-11-01].

===2018-09-13 - NY votes today===
*[http://web.archive.org/web/20180913133544/https://xkcd.com/ 2018-09-13]
**[[2045: Social Media Announcement]] (the day after the release of the comic.)
***It was not up when the comic was released on [http://web.archive.org/web/20180912131437/https://xkcd.com/ 2018-09-12].
**It was a short lived reminder that NY votes today below the usual standard text.
**The text:
***xkcd updates every Monday, Wednesday, and Friday.
***NY votes today! Find your polling place [https://voterlookup.elections.ny.gov/ here]. (Zephyr Teachout for AG!)
**It ended with [[2046: Trum-]], the very next comic, on [http://web.archive.org/web/20180914175605/https://xkcd.com/ 2018-09-14], returning to the standard text.

===2017-11-26 - Christmas gifts===
*[http://web.archive.org/web/20171126130857/http://xkcd.com/ 2017-11-26]
**[[1920: Emoji Sports]] had been up two days [http://web.archive.org/web/20171125125648/https://xkcd.com/ 2017-11-25] before the message changed from the normal version. But it changed the day before the next comic came up.
***It was changed to a commercial for Christmas shopping with a code for getting 5$ of the price with a codes for different online shops.
**The text:
***To anyone looking for Christmas gifts: Until Monday you can get $5 off
***[https://www.amazon.com/What-International-Scientific-Hypothetical-Questions/dp/0544456866 What If?] and [https://www.amazon.com/Thing-Explainer-Complicated-Stuff-Simple/dp/0544668251 Thing Explainer] on Amazon with coupon code GIFTBOOK17.
***At Barnes & Noble, until Sunday you can get 20% off [https://www.barnesandnoble.com/w/what-if-serious-scientific-answers-to-absurd-hypothetical-questions-randall-munroe/1118864093 What If?] and [https://www.barnesandnoble.com/w/thing-explainer-randall-munroe/1121864432 Thing Explainer] using code GIVETHANKS.
**It was only up a few days and ended with [[1922: Interferometry]] on [http://web.archive.org/web/20171130150053/http://xkcd.com/ 2017-11-30] where it returned to the standard text.
***But it was still up when the comic in between [[1921: The Moon and the Great Wall]] was up on [http://web.archive.org/web/20171129140033/http://xkcd.com/ 2017-11-29].

===2017-09-22 - Visiting the UK===
*[http://web.archive.org/web/20170922232616/https://xkcd.com/ 2017-09-22]:
**[[1893: Thread]] (with its release).
***It was not up on the previous comic [[1892: USB Cables]], on the day they changed [http://web.archive.org/web/20170922025204/https://xkcd.com/ 2017-09-22].
**It was an announcement that Randall would visit the UK next week.
**The text:
***I'll be visiting the UK next week! You can join me in London from September 30-October 2 (at [https://live.newscientist.com/speakers/randall-munroe New Scientist Live], [http://www.rigb.org/whats-on/events-2017/october/public-lunchtime-talk--randall-munroe The Royal Institution], and [http://www.intelligencesquared.com/events/randall-munroe-on-making-complicated-stuff-simple/ Intelligence Squared]), then from October 3-6 in [https://www.stpetersyork.org.uk/public_lectures/randall_munroe_thing_explainer York], [https://www.eventbrite.co.uk/e/thing-explaining-with-randall-munroe-tickets-37832289396 Edinburgh], [https://www.toppingbooks.co.uk/events/ely/randall-murray-thing-explainer/ Cambridge and Ely], [https://www.eventbrite.co.uk/e/randall-munroe-book-signing-thing-explainer-tickets-38041072873 Oxford], and [http://www.cheltenhamfestivals.com/literature/whats-on/2017/randall-munroe/ Cheltenham].
**Ended with [[1900: Jet Lag]] on [http://web.archive.org/web/20171010045802/https://xkcd.com/ 2017-10-10] when the text returned to normal.
***But it was still up the day before with [[1899: Ears]] on [http://web.archive.org/web/20171009040109/https://xkcd.com/ 2017-10-09].

===2017-07-31 - Thank you===
*[http://web.archive.org/web/20170731021227/https://www.xkcd.com/ 2017-07-31]:
**[[1869: Positive and Negative Reviews]] (3rd day after release of this Friday comic)
***The comic [[1870: Emoji Movie Reviews]] was released later that day.
***Megan is holding hand with Cueball and next to them is two words above each other: Thank you.
***The image is also a link.
****The link goes to [http://web.archive.org/web/20170801042453/https://www.nytimes.com/interactive/2017/07/25/us/politics/senate-votes-repeal-obamacare.html How Each Senator Voted on Obamacare Repeal Proposals], an article showing the senate votes. (here in an archived version).
**Ended with [[1872: Backup Batteries]] on [http://web.archive.org/web/20170804152509/https://xkcd.com/ 2017-08-04], but was still up when [[1871: Bun Alert]] was up on [http://web.archive.org/web/20170803124342/https://xkcd.com/ 2017-08-03].

===2017-07-25 - Vote against health care bill===
*[http://web.archive.org/web/20170725103104/https://xkcd.com/ 2017-07-25]:
**[[1867: Physics Confession]] (2nd day after release of the comic, it was not up on the first day: [http://web.archive.org/web/20170724095252/https://xkcd.com/ 2017-07-24]).
**Randall modified the xkcd header to ask readers to support voting against Donald Trump's new health care bill.
***The header was replaced with an image which is available in an archived version [https://web.archive.org/web/20170726150959im_/https://imgs.xkcd.com/notes/call-senate.png here].
***The image is also a link (and you can click anywhere on it to go to the link that is mentioned).
****The link goes to [http://web.archive.org/web/20170729003307/https://www.trumpcareten.org/daily TrumpCare Ten] (here in an archived version).
****Randall has previously made it clear, in [[1572: xkcd Survey]], that he knows how to make an image a link, but not how to put the link only where he says to click.
***Transcript of the image:
****[Megan is holding hand with Cueball next to three lines of large text, the same height as they are:]
****Please tell your senators to vote against this health care bill. It will hurt people.
****[After these three lines there is a phone number in a very large bold font with a line of text below:]
****202-224-3121
****Or click here for more info
****[Below the above is a gray line which is split in the middle with gray text, and below that four state names in white text inside black boxes:]
****Know anyone in these states? Ask them to call, too.
****Alaska Maine Nevada Ohio West Virginia
**Ended while [[1869: Positive and Negative Reviews]] was up on [http://web.archive.org/web/20170731164828/https://xkcd.com/ 2017-07-31], when it was replaced by a ''Thank you''.
***That comic came out already [http://web.archive.org/web/20170728124230/https://xkcd.com/ three days before] (Friday comic), but was still up on [http://web.archive.org/web/20170730141019/https://www.xkcd.com/ 2017-07-30]) when the message changed sometimes between Sunday 30th and Monday 31st (where [[1870: Emoji Movie Reviews]] was released).

===2017-01-21 - Update on previous===
*[http://web.archive.org/web/20170122003124/https://xkcd.com/ 2017-01-21]:
**[[1788: Barge]]
**It came up almost a month after Christmas but did not really change the sales pitch of the previous. It just removed the link image with the large red text, see previous version below.
**The text:
***There are [https://store.xkcd.com/collections/featured four new shirts] in [https://store.xkcd.com/ the xkcd store],
***along with [https://store.xkcd.com/collections/posters posters] and [https://store.xkcd.com/collections/everything lots of other stuff]!
**Ended with [[1867: Physics Confession]] on [http://web.archive.org/web/20170725103104/https://xkcd.com/ 2017-07-25].
***That comic came up [http://web.archive.org/web/20170724095252/https://xkcd.com/ the day before] the above version of the header appeared.
***So the first day after release it was still the T-shirt commercial.
***And it did not return to the standard version in between.

===2016-11-28 - Christmas sale===
*[http://web.archive.org/web/20161128153015/http://xkcd.com 2016-11-28]
**[[1765: Baby Post]]
**This came up in time for the Christmas sale of 2016.
**The text was
***There are [https://store.xkcd.com/collections/featured four new shirts] in [https://store.xkcd.com/ the xkcd store],
***along with [https://store.xkcd.com/collections/posters posters] and [https://store.xkcd.com/collections/everything lots of other stuff]!
***Above the text there was an image with two black t-shirts with white print on the chest. They were located at either end of a large red text written in the text type used in the comic. This text said New xkcd shirts.
***The entire image was a link to the [https://store.xkcd.com/ xkcd store].
**Ended with [[1788: Barge]] [http://web.archive.org/web/20170121114423/https://xkcd.com/ 2017-01-21]

===2016-04-23 - Back to standard text===
*[https://web.archive.org/web/20160423103108/http://xkcd.com/ 2016-04-23]
**When [[1671: Arcane Bullshit]] came out (probably 2016-04-22, but no earlier archived versions exist) the text returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**It stayed like this for more than 7 months until [[1764: XKCDE]] was up on [https://web.archive.org/web/20161128093459/http://xkcd.com/ 2016-11-28].

===2016-04-04 - Protip on Garden===
*[https://web.archive.org/web/20160404185353/http://www.xkcd.com/#5dbfbb82-fc20-11e5-8001-42010a8e000d 2016-04-04]
**Because of the complexity of the [[:Category:April fools' comics|April fools' comic]] [[1663: Garden]], Randall needed to give people some advice, hence a [[:Category:Protip|protip]] was added.
***This came in several versions, not all managed to be documented in the archive. See more in the trivia for garden regarding the [[1663:_Garden#Header_text_after_release|Header text after release]].
**The header text became a protip with the following text (the first version not documented only had the first line):
***'''Protip''': If you don't like how your garden is growing, you can click to prune it.
***You can copy the URL to share your garden. From other browsers, it will be view-only.
**When the next comic, [[1664: Mycology]], was released two days later on [https://web.archive.org/web/20160406194653/http://xkcd.com/1664/ 2016-04-06], an extra line of text was added, due to the issues caused by Garden not being on the front page {{xkcd}} but only on the numbered page {{xkcd|1663}}.
***This change was first documented on the front page the day after on [https://web.archive.org/web/20160407010635/http://xkcd.com/ 2016-04-07]
***The change was of course also on and all the other comic and thus also on the Garden comic from [https://web.archive.org/web/20160406192530/http://xkcd.com/1663/ 2016-04-06].
**Text added below the other two lines:
***Note: If you're seeing today's comic in place of your garden, change the URL from xkcd.com/#<your code> to xkcd.com/1663/#<your code>.
****This extra line was only there until next time the comic change, so last day was [https://web.archive.org/web/20160408145017/http://xkcd.com/ 2016-04-08].
**On [https://web.archive.org/web/20160408195958/http://xkcd.com/ 2016-04-08] when [[1665: City Talk Pages]] was released the extra line was removed leaving the two written first here above.
***This was also the case on the Garden comic (and all other comics) from [https://web.archive.org/web/20160408204740/http://xkcd.com:80/1663/ 2016-04-08].
**The Protip stayed in the main header text until [https://web.archive.org/web/20160422102754/http://xkcd.com/ 2016-04-22] when [[1670: Laws of Physics]] was up.
***But even though it disappeared from main header and thus from all other comic it stayed on the Garden comic, also on [https://web.archive.org/web/20160423182630/http://xkcd.com:80/1663/ 2016-04-23].
***And it has then turned out to become one of the permanent [[xkcd_Header_text#Garden|Unique header texts]].

===2016-04-04 - Back to standard text as Garden came up===
*[https://web.archive.org/web/20160404123555/http://xkcd.com/ 2016-04-04]
**For a brief period of time, when [[1663: Garden]] was finally released, the Header text returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**But this lasted less than 13 hours. (Time between the previous and next archived version is 13 hours and 7 minutes).
***As people needed guidance to the new complicated comic.

===2016-04-01 - April 1st comic - technical difficulties===
*[https://web.archive.org/web/20160401204749/https://xkcd.com/ 2016-04-01]
**When Randall had problem releasing [[1663: Garden]] several [[1663:_Garden#April_Fools.27_header_text|April Fools' header text]] arrived in short succession while [[1662: Jack and Jill]] was still up.
**Each of these where simple text.
***The first from the link abve:
****The xkcd April 1st comic is currently experiencing technical difficulties.
****Please stand by!
***The next from [https://web.archive.org/web/20160402125723/http://xkcd.com:80/ 2016-04-02] at 12:57:
****The xkcd April 1st comic is currently experiencing technical difficulties.
****Status update: Please stand by.
****Status update: This is fine. Everything is fine.
****Status update: Everything is on fire.
****Status update: Searching for calendar systems in which Saturday is April 1st.
***The next from [https://web.archive.org/web/20160402175822/http://www.xkcd.com 2016-04-02] at 17:58:
****The Friday xkcd comic is currently experiencing technical difficulties
****[Editor's note: Everything is on fire] and has been delayed until Sunday night.
**It stayed like the third version until [https://web.archive.org/web/20160404054612/http://xkcd.com/ 2016-04-04] three days after the April Fools' comic was supposed to come out, so Jack and Jill was up until it changed.
*This was what was needed to stop more than 10 months of promotion of the [[Thing Explainer]] book, see below.

===2015-12-13 - Thing Explainer is available===
*[https://web.archive.org/web/20151213194534/http://xkcd.com/ 2015-12-13]
**[[1615: Red Car]] was still up when the header changed.
***The change was that the promotion for where Randall was last week where removed and left only the promotion the book [[Thing Explainer]]:
**The text:
***Thing Explainer is available at: [https://www.amazon.com/Thing-Explainer-Complicated-Stuff-Simple/dp/0544668251 Amazon], [https://www.barnesandnoble.com/w/thing-explainer-randall-munroe/1121864432?ean=9780544668256#/ Barnes & Noble], [https://www.indiebound.org/book/9780544668256 Indie Bound], [https://www.hudsonbooksellers.com/thingexplainer Hudson]
**It was last up on [https://web.archive.org/web/20160401125621/http://xkcd.com/ 2016-04-01] while [[1662: Jack and Jill]] was on the front page.
***This was the last time that Thing Explainer was [[:Category:Book promotion|promoted]] in the header text.
****The first time was [[xkcd_Header_text#2015-05-14_-_New_book_Thing_Explainer|2015-05-14]], so it had been part of the header text for almost ten and a half month. That is a record!

===2015-12-05 - Thing Explainer is available and Next week===
*[https://web.archive.org/web/20151205070539/http://xkcd.com/ 2015-12-05]
**[[1612: Colds]] was up when the header changed.
***This was also at this time the [[2015-11-24 - Pages from my new book Thing Explainer|previous header texts image] was moved below the comic.
**Randall goes back to a simple promotion of the book [[Thing Explainer]] listing where to boy it.'
***But he adds a line about where he will be next week, first to a book shop on Illinois and then later in Toronto, where the host was {{w|Ryan North}} from [https://qwantz.com/ Dinosaur comics], one of the [[Design_of_xkcd.com#Comics_I_enjoy|comics Randall enjoys]].
**The text:
***Thing Explainer is available at: [https://www.amazon.com/Thing-Explainer-Complicated-Stuff-Simple/dp/0544668251 Amazon], [https://www.barnesandnoble.com/w/thing-explainer-randall-munroe/1121864432?ean=9780544668256#/ Barnes & Noble], [https://www.indiebound.org/book/9780544668256 Indie Bound], [https://www.hudsonbooksellers.com/thingexplainer Hudson]
***I'll be in [https://web.archive.org/web/20151211002159/http://www.andersonsbookshop.com/event/naperville-reads-randall-munroe Naperville, IL] and [https://web.archive.org/web/20151205205714/http://www.eventbrite.ca/e/indigo-exclusive-randall-munroe-tickets-18694384407 Toronto, ON] (with [https://qwantz.com/ Ryan North]!) next week.
**It was last up on [https://web.archive.org/web/20151212133400/http://xkcd.com:80/ 2015-12-12] while [[1615: Red Car]] was on the front page.

===2015-11-24 - Pages from my new book Thing Explainer===
*[https://web.archive.org/web/20151203234149/http://xkcd.com/ 2015-12-03]
**[[1611: Baking Soda and Vinegar]] was still up when the header changed.
***This was a special one comic header text consisting of a large image with pages and excerpts from the book [[Thing Explainer]].
***The image was larger than most comics, and took away the focus of today's comic.
***So already two days after, when [[1612: Colds]] was released, the image was relegated to the being below the comic, but inside the [[Design_of_xkcd.com#Main_comic|main comic]] segment, thus not a part of the [[Design_of_xkcd.com#Bottom_segment|bottom segment]].
****But it was displayed in the header for all comics, here [https://web.archive.org/web/20151204030024/http://xkcd.com/1609/ an example] from the comic released two comics before 1611, [[1609: Food Combinations]].
****See more (and the image) [[Thing_Explainer#Promotion_at_the_xkcd_home_page|here]] on the page for Thing Explainer.
**Description of the image:
***At the top are shown four pages from the book. Two mainly blue, left and right, with white text and large images and between them two mainly white pages with blue text and smaller images. None of the text is readable, but the two blue pages pictures can be understood even in this size.
****The first page is number 2 about an animal cell: ''Tiny bags of water you’re made of''. It shows a detailed drawing of a human cell, with text at the top, and then several labels with text beneath that have arrows pointing to different parts of the cell.
****The second page is number 31 about the cockpit of an airplane: ''Stuff you touch to fly a sky boat''. It shows the inside of a cockpit with view out of the four windows, with lots of buttons in the ceiling, and blue screens and instruments at the bottom. Out the windows can be seen clouds and Cueball hanging from a balloon (a reference to [[1110: Click and Drag]]).
*****A zoom in on this page is shown beneath the four pages, see more below.
****The third page is page 27. What is on this page is a bit difficult to see, as there are no big drawings with clear meaning. It is the second page in a two page section on Data centers, with the second page focusing on the Computer: ''Computer building''. The pictures shows the data racks, to the right, and the individual computer components put into these, to the top left, with the wiring shown below to the left. Lots of text with arrows to different parts.
****The fourth page is page 23 about Trees: ''Tree''. It clearly shows the silhouette of a white tree on blue background. Several animal live on, in and beneath it. Cueball is standing on the ground. All the text are beneath labels that points to parts of the tree or the tree dwellers.
***In between the two time two pages there is a readable text, split over five lines, with two arrow at the top going from the corners of the text to the near corners of the white pages to either side. And below three arrows, with two pointing similarly as the two top arrows, but starting at the bottom of the text, and one arrow pointing straight down from the middle of the text to the large image below.
***Beneath all this is a large image which shows a zoom in on the left part of the cockpit from the second page above. The zoom is focused on the two front windows, but only the left is entirely in the picture, and the balloon hanging Cueball, cannot be seen in this part of the right window.
****At this zoom level, most of the text van be read (that is labels written on things or having arrows pointing to them). Clouds can bee seen out of both windows and in the background a rocket launch with smoke plume below the rocket is visible. The horizon line is well defines across both windows. Some of the instruments can be seen below the windows with text written on them. And some blue areas, mainly screens can be seen.
***Beneath this picture is a line with links to where the book can be ordered, like the one from the previous header text.
**The text:
***Pages from my new book, ''Thing Explainer'': Complicated stuff in simple words.
***[Labels in the cockpit]:
****Sky
****Ground (This should be below the sky. If it's above the sky, you're either having a big problem or doing something ''really'' fun.)
****Use this stuff to tell the sky boat to fly itself.
****Fly
****How fast it feels IAS 172
****Direction HDG 240
****Fall or rise
****How high 2500
****Fly
****Helpful screen
****Where the ground is
****You are: Flying
****Look here if there is a problem
***Below this image is a line of text with the first word in black and the other are four links to where to order the book:
****Order: [https://www.amazon.com/Thing-Explainer-Complicated-Stuff-Simple/dp/0544668251 Amazon], [https://www.barnesandnoble.com/w/thing-explainer-randall-munroe/1121864432?ean=9780544668256#/ Barnes & Noble], [https://www.indiebound.org/book/9780544668256 Indie Bound], [https://www.hudsonbooksellers.com/thingexplainer Hudson]
***The image is a link to [https://www.amazon.com/gp/product/0544668251/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0544668251&linkCode=as2&tag=thekcs-20&linkId=S4XRZJJKSMHOWEQU Thing Explainer on Amazon].
**It was only part of the header for two days until [https://web.archive.org/web/20151204050419/http://xkcd.com/ 2015-12-04].
***It was then moved below the comics as mentioned above from [https://web.archive.org/web/20151205070539/http://xkcd.com/ 2015-12-05] when the next comic [[1612: Colds]] came out.

===2015-11-24 - Thing Explainer is out today===
*[https://web.archive.org/web/20151124201602/http://xkcd.com/ 2015-11-24]
**[[1607: Supreme Court]] was still up, but [[1608: Hoverboard]] most have come out close to the change.
***See both [https://web.archive.org/web/20151125001228/http://xkcd.com/ 2015-11-25 00:12] and [https://web.archive.org/web/20151125230753/http://xkcd.com/ 2015-11-25 23:07].
***Since this new "comic" was actually a {{w|browser game}} made to celebrate the release of Randall's new book, ''[[Thing Explainer]]'', which was released on the same day as this comic: Tuesday, November 24, 2015. The comic thus appeared on a Tuesday, replacing that week's normal Wednesday release to coincide with the release day.
***Hence it is a shame that there is no archived versions on the 24th showing Hoverboard on the front page. Even though the new version of the Header text is shown on the 24th, but on the previous comic.
**Cause all the header text is about is the release day of Thing Explainer!
***The top part is text with a line with large letters and a line below in brackets and using smaller letters. Below that there is a line dividing the text from the next part.
***Below follows the same header that was up as early as [[#2015-05-15 - Thing Explainer details|2015-05-15]] with the open book and three lines of text.
**The text:
***My new book, [http://blog.xkcd.com/2015/05/13/new-book-thing-explainer/ Thing Explainer], is out today!
***(If you're in NYC, you can also [https://web.archive.org/web/20150925015809/http://stores.barnesandnoble.com:80/author/11170358 come see me]!)
***A picture of the open book is shown with diagrams of a human cell on the left page and suspension bridges on the right. All held in blue nuances. And arrow goes from the first word of the text to the right to the book on the left. The text is also blue except the title of the book which is in red:
****New book: Thing Explainer
****Up Goer Five-style diagrams of things (explained in the ten-hundred most common words)
***Below this image is a line of text with the first word in black and the other are four links to where to order the book:
****Order: [https://www.amazon.com/Thing-Explainer-Complicated-Stuff-Simple/dp/0544668251 Amazon], [https://www.barnesandnoble.com/w/thing-explainer-randall-munroe/1121864432?ean=9780544668256#/ Barnes & Noble], [https://www.indiebound.org/book/9780544668256 Indie Bound], [https://www.hudsonbooksellers.com/thingexplainer Hudson]
***The image above the order line is a link to the [[Blag]] post [https://blog.xkcd.com/2015/05/13/new-book-thing-explainer/ New book: Thing Explainer].
**Already the day after [https://web.archive.org/web/20151125001228/http://xkcd.com/ 2015-11-25], when [[1608: Hoverboard]] was up, an extra line (a link) was added below the above. A line was separating it from the links above:
***[http://blog.xkcd.com/2015/11/24/a-puzzle-for-the-uk/ A puzzle for UK readers]
****This was to a blag post with A puzzle for the UK because he could not go to UK in person. So this was a kind of bonus for those who could solve it. (We need an entry on that here on xkcd...)
**On [https://web.archive.org/web/20151127114432/http://xkcd.com/ 2015-11-27] is still looked like this but then when the next comic, [[1609: Food Combinations]], came out on [https://web.archive.org/web/20151128130851/http://xkcd.com/ 2015-11-28] the line about seeing him in New York was removed.
**The version with the puzzle, but without the New York line, was then up until [https://web.archive.org/web/20151201222148/http://xkcd.com/ 2015-12-01] when [[1610: Fire Ants]] was up.
**Then on [https://web.archive.org/web/20151202225254/http://www.xkcd.com/ 2015-12-02] the line with the puzzle at the bottom was changed to:
***I'm doing a [https://www.facebook.com/AndyWeirAuthor/ live Q&A;] at 2:30pm PT with The Martian author Andy Weir.
****The link is to {{w|Andy Weir}}'s Facebook page. And the Q&A can likely not be seen anymore.
****Randall has made no less than two comics about the movie {{w|The Martian (film)|The Martian}}, [[1536: The Martian]] and [[1585: Similarities]].
***It only lasted that day, and this became the last day with this header text, so it ended while [[1611: Baking Soda and Vinegar]] was up.

===2015-10-22 - World Polio Day===
*[https://web.archive.org/web/20151022200022/http://xkcd.com/ 2015-10-22]
**[[1593: Play-By-Play]] was up when the header changed.
***Randall mentions World Polio Day and the comic he drew for Bill Gates' blog, [[XKCD Marks the Spot]].
***Although he still keeps mentioning the release date for [[Thing Explainer]].
**The text:
***We've [https://slate.com/technology/2015/08/no-new-polio-in-africa-for-one-year-gates-epidemiologist-on-vaccines-and-surveillance.html almost eradicated polio]. For World Polio Day, I drew a comic
***about the eradication efforts. You can see it on [https://www.gatesnotes.com/Health/XKCD-Marks-the-Spot Bill Gates's blog].
***My [https://blog.xkcd.com/2015/05/13/new-book-thing-explainer/ new book] of complex diagrams and simple words comes out Nov 24th.
****The last line is split from the Polio announcement with a line.
**Was there until [[1607: Supreme Court]] was up on [https://web.archive.org/web/20151124065108/http://xkcd.com:80/ 2015-11-24].
***That was the day that the book was released, and when the next comic [[1608: Hoverboard]] came out, it was a celebration of the book.

===2015-09-23 - Book trip and tool===
*[https://web.archive.org/web/20150923044724/http://xkcd.com/ 2015-09-23]:
**[[1580: Travel Ghost]] was up when the header changed.
***Announcing the book trip for the [[Thing Explainer]] book as well as linking to a Thing Explainer word checker tool! Two lines of text with links.
**The text:
***News: Announcing my Thing Explainer [https://blog.xkcd.com/2015/09/22/im-going-on-a-book-trip/ book trip]. Come say hi!
***Other news: Announcing the Thing Explainer [https://blog.xkcd.com/2015/09/22/a-thing-explainer-word-checker/ word checker] tool!
****Both links are to the [[Blag]], the first a schedule for his book trip, and the second telling about Randall's new [https://xkcd.com/simplewriter/ Simple Writer] that could help you ''Write Like Up Goer Five and Thing Explainer''.
**Was there until [[1593: Play-By-Play]] was up on [https://web.archive.org/web/20151021164208/http://xkcd.com/ 2015-10-21].

===2015-09-06 - New links===
*[https://web.archive.org/web/20150906181550/http://xkcd.com/ 2015-09-06]:
**[[1573: Cyberintelligence]] was still up when the header changed.
***The promotion of the book, [[Thing Explainer]], stayed the same with a picture above links to preorder it, but the links was reduced from four to two, the amazon link changed and a new company was added for the second link removing the other three.
***See [[#2015-05-15 - Thing Explainer details|2015-05-15]] below for all details on the image.
**The new link text:
***Preorder: [https://www.amazon.co.uk/Thing-Explainer-Randall-Munroe/dp/1473620910 Amazon.co.uk}, [https://www.waterstones.com/book/thing-explainer/9781473620919 Waterstones]
**Was there until [[1579: Tech Loops]] was up on [https://web.archive.org/web/20150919220105/http://xkcd.com/ 2015-09-22].

===2015-08-09 - Back to previous header===
*[https://web.archive.org/web/20150809230825/http://xkcd.com/ 2015-08-09]:
**[[1561: Water Phase Diagram]] was still up when the header changed.
***It changed back to the exact same heading as before the one with other news here below.
****See [[#2015-05-15 - Thing Explainer details|2015-05-15]] below for all details.
**Stayed like this until [[1573: Cyberintelligence]] was out on [https://web.archive.org/web/20150905154014/https://xkcd.com/ 2015-09-05], but the only change was that the links to preorder changed from four to only two.

===2015-06-06 - Other news===
*[https://web.archive.org/web/20150606084120/http://www.xkcd.com/ 2015-06-06]
**Changed while [[1534: Beer]] was still up.
***This was just adding some "Other news", but leaving the promotion of [[Thing Explainer]] unchanged as in the [[#2015-05-15 - Thing Explainer details|previous header]], but adding two news stories in text below the link to preorder.
**The new text:
***In other news, [https://www.youtube.com/watch?v=ygrdAvmr-MA Space Weird Thing] is delightful, and I feel surprisingly invested in [https://web.archive.org/web/20150720074919/https://twitter.com/xkcdbracket @xkcdbracket's] results.
****The link to Space Weird Thing is a YouTube video with a simple words version of {{w|David Bowie|David Bowie's}} [https://www.youtube.com/watch?v=iYYRH4apXDo Space Oddity] music video, using only the top then hundred words. The creators contributes the idea to the [[1133: Up Goer Five]] diagram which also inspired the book Thing Explainer, also promoted in this header text.
****The other link is referring to [[1529: Bracket]] released 12 days before this update, as a twitter user made a survey going through all the brackets all the way to a winner was found. Seems Randall became interested in who won. See more on the comics page.
**Was there until [[1561: Water Phase Diagram]] was up on [https://web.archive.org/web/20150807181044/http://xkcd.com/ 2015-08-07]. Then it returned back to the previous header with only the promotion of the book.

===2015-05-15 - Thing Explainer details===
*[http://web.archive.org/web/20150515060322/http://www.xkcd.com/ 2015-05-15]
**[[1525: Emojic 8 Ball]]
**This was a more detailed promotion for Randall's new book: [[Thing Explainer]] to be published in November 2015, more than half a year after the announcement, compared to the previous change which was just a line and a link.
**The text:
***A picture of the open book is shown with diagrams of a human cell on the left page and suspension bridges on the right. All held in blue nuances. And arrow goes from the first word of the text to the right to the book on the left. The text is also blue except the title of the book which is in red:
****New book: Thing Explainer
****Up Goer Five-style diagrams of things (explained in the then hundred most common words)
***Below this image is a line of text with the first word in black and the other are four links to where to preorder the book:
****Preorder: [https://www.amazon.com/Thing-Explainer-Complicated-Stuff-Simple/dp/0544668251 Amazon], [https://www.barnesandnoble.com/w/thing-explainer-randall-munroe/1121864432?ean=9780544668256#/ Barnes & Noble], [https://www.indiebound.org/book/9780544668256 Indie Bound], [https://www.hudsonbooksellers.com/thingexplainer Hudson]
***The image above the preorder line is a link to the [[Blag]] post [https://blog.xkcd.com/2015/05/13/new-book-thing-explainer/ New book: Thing Explainer].
**Changed while [[1534: Beer]] was up on [https://web.archive.org/web/20150605082643/http://xkcd.com/ 2015-06-05], but only to add other information. The main promotion of the book stayed the same.

===2015-05-14 - New book Thing Explainer===
*[https://web.archive.org/web/20150514053623/http://www.xkcd.com/ 2015-05-14]
**[[1524: Dimensions]] was up.
***A single line announced the new [[Thing Explainer]] book, with link to the [[Blag]] post from the day before.
**The text:
***New book: [https://blog.xkcd.com/2015/05/13/new-book-thing-explainer/ Thing Explainer!]
*The [[:Category:Book promotion|promotion of the book]] stayed up with some changes for [[xkcd_Header_text#2015-12-13_-_Thing_Explainer_is_available|more than 10 month]] first stopping when Randall had [[xkcd_Header_text#2016-04-01_-_The_xkcd_April_1st_comic_is_currently_experiencing_technical_difficulties|problems with his April Fool's comic]] in 2016... It is a record length.
**The first came already the day after so this short announcement was only up on this day and ended with the next comic. See above.
**See more details on the promotion of the book on the Thing Explainer page [[Thing_Explainer#Promotion_at_the_xkcd_home_page|here]].

===2015-02-11 - Back to standard text===
*[https://web.archive.org/web/20150211154103/http://xkcd.com/ 2015-02-11]
**When [[1485: Friendship]] came out the text returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**It stayed like this until [[1523: Microdrones]] was up on [https://web.archive.org/web/20150512184622/http://xkcd.com/ 2015-05-12], so just a day more than three months.

===2015-02-04 - Valentine cards only===
*[https://web.archive.org/web/20150204051152/http://xkcd.com/ 2015-02-04]
**[[1482: NowPlaying]] came out as it changed.
***After the last day of ordering t-shirt had passed it changed back to the picture with the Valentine cards from the previous header, but without the t-shirt picture.
***See that [[#2015-01-29 - Valentine cards and shirt|header change]], but only the first picture described.
**Ended while [[1484: Apollo Speeches]] was up on [https://web.archive.org/web/20150210005540/http://xkcd.com/ 2015-02-10].

===2015-02-02 - Last day shirt===
*[https://web.archive.org/web/20150202092804/http://xkcd.com/ 2015-02-02]
**[[1481: API]] came out as it changed.
***Just letting people know it is the last chance to order the binary t-shirt.
***There was just a line of text:
**The text was:
***Today is the last day to order the limited-run [https://web.archive.org/web/20150202092804/http://teespring.com/xkcdbinaryheart binary heart shirt]!
***The last words is link to the shirt in the shop.
**Ended before the next comic was up, but still the day after, when it was too late to order: [https://web.archive.org/web/20150203022036/http://xkcd.com/ 2015-02-03].

===2015-01-29 - Valentine cards and shirt===
*[http://web.archive.org/web/20150129183442/http://xkcd.com/ 2015-01-29]
**[[1479: Troubleshooting]] was up when it changed.
***It was to tell about both the two previous updates in the same header- Both about the collaboration to make science themed Valentine's Day cards and his new Valentine t-shirt.
***There where two pictures, with a promotion of the two products and a link to them in the shop.
***On the left was text about the cards with a small drawing to the right of the text showing the four cards.
****An ant talking to an aphids; Earth rotating about the sun but locked so one side melts; an ant with a fungus growing from it's head with a heart, and a Velociraptor skeleton where the last bit of the tail is put on by a person. The text on the cards are unreadable, but they can be seen via the link.
***The text (in three lines) was:
****Webcomic science Valentine card collaboration
****The [https://web.archive.org/web/20150127161237/http://store.xkcd.com/products/webcomic-science-valentines link to the cards] from the picture.
***The picture on the left shows binary numbers 0 and 1 in white on a black background. The middle of the three lines of those have message in red text.
***The text:
****0 1 0 1 0 Binary heart 1 1 1
****1 1 1 Valentine shirt 0 1
****0 0 0 1 [limited run] 0 0 1
****The [http://web.archive.org/web/20150125080756/http://teespring.com/xkcdbinaryheart link to the shirt] from the picture.
**Ended while [[1480: Super Bowl]] was up on [https://web.archive.org/web/20150201015913/http://xkcd.com/ 2015-02-01].

===2015-01-27 - Valentine's Day cards===
*[http://web.archive.org/web/20150127161237/http://xkcd.com/ 2015-01-27]
**[[1478: P-Values]] was up when it changed.
***It was to tell that about a collaboration to make science themed Valentine's Day cards.
***There was just two lines of text:
**The text was:
***I've teamed up with three other webcomic artists
***to make [https://web.archive.org/web/20150127161237/http://store.xkcd.com/products/webcomic-science-valentines a set of science-themed Valentine's Day cards]!
**There was a link to the cards on the store.
**Ended while [[1479: Troubleshooting]] was up [https://web.archive.org/web/20150128172147/http://xkcd.com/ 2015-01-28].

===2015-01-24 - Get shirts in store===
*[http://web.archive.org/web/20150124110707/http://xkcd.com/ 2015-01-24]
**[[1477: Star Wars]] came out as it changed.
***It was to tell about a new type of t-shirt for Valentine Day.
***There was just two lines of text:
**The text was:
***For Valentine's Day, you can get a binary heart shirt
***(from {{xkcd|99|comic #99!}}) in [http://web.archive.org/web/20150125080756/http://teespring.com/xkcdbinaryheart a limited run on TeeSpring]
**There was a link to [[99: Binary Heart]] and to the relevant t-shirt on the [https://teespring.com/ Teespring] home page.
**Ended while [[1478: P-Values]] was up [http://web.archive.org/web/20150126133139/http://xkcd.com/ 2015-01-26].

===2014-12-22 - Get shirts in store===
*[http://web.archive.org/web/20141222233233/http://xkcd.com/ 2014-12-22]
**[[1463: Altitude]] came out as it changed.
***After the Christmas sale deadline there was still merchandise in the [https://store.xkcd.com/ xkcd store].
***There was just a line of text:
**The text was:
***You can get xkcd shirts, prints, and posters in the [http://shop.xkcd.com/ store]!
**The word store was a link to the shop.
**Ended while [[1476: Ceres]] was up [http://web.archive.org/web/20150123102318/http://xkcd.com/ 2015-01-23].

===2014-12-19 - Back to previous header===
*[http://web.archive.org/web/20141219092349/http://www.xkcd.com/ 2014-12-19]:
**[[1462: Blind Trials]] came out as it changed.
*It changed back to the exact same heading as before the one with order now here below.
**See [[#2014-12-17 - Christmas deadline|2014-12-17]] below for all details.
**Ended while [[1462: Blind Trials]] was still up [http://web.archive.org/web/20141221172450/http://www.xkcd.com/ 2014-12-21].

===2014-12-18 - Order now===
*[http://web.archive.org/web/20141218090650/http://www.xkcd.com/ 2014-12-18]
**[[1461: Payloads]] was still up when it changed.
***It was to alert that the deadline for shipping before Christmas from the [https://store.xkcd.com/ xkcd store] was Friday and that it was rapidly approaching. This was a follow up on the [[#2014-12-17 - Christmas deadline|Wednesdays announcement]] the day before.
***The image was just four lines of text with several red and blue words.
**The text was:
***The xkcd store Christmas shipping deadline is Friday!
***Once it passes, there is no going back. The arrow of time drags us all
***Inexorably forward toward decay and disorder. toward the end of all things.
***Towards the empty silence of the grave. Order now!
**The entire drawing was a link to the [https://store.xkcd.com/ xkcd store], not just the blue text.
**Ended a day later while [[1461: Payloads]] was still up [http://web.archive.org/web/20141216084107/http://xkcd.com/ 2014-12-16].

===2014-12-17 - Christmas deadline===
*[http://web.archive.org/web/20141217085320/http://www.xkcd.com/ 2014-12-17]
**[[1461: Payloads]] came out as it changed.
***It was to alert that the deadline for shipping before Christmas from the [https://store.xkcd.com/ xkcd store] was Friday. This was announced Wednesday two days before the deadline.
***The image was just text with the last word in each line in red and the xkcd store blue as a link.
**The text was:
***Looking for a gift?
***xkcd store Christmas shipping deadline is Friday!
**The entire drawing was a link to the [https://store.xkcd.com/ xkcd store], not just the blue text
**Ended a day later while [[1461: Payloads]] was still up!

===2014-12-03 - Christmas shopping===
*[http://web.archive.org/web/20141203132024/http://www.xkcd.com/ 2014-12-03]
**[[1455: Trolley Problem]] came out as it changed.
***It was to announce the start of the Christmas shopping on the [https://store.xkcd.com/ xkcd store]
***Four boxes with shipping details are shown. Two green and two red, alternating from green. Between them are three text messages in two, two and three lines.
**The text was:
***xkcd store
***Christmas shopping
***I will probably not ship you a bobcat.
**The entire drawing was a link to the [https://store.xkcd.com/ xkcd store].
**The bobcat is a reference to [[325: A-Minus-Minus]].
**Ended while [[1460: SMFW]] was up [http://web.archive.org/web/20141216084107/http://xkcd.com/ 2014-12-16].

===2014-11-29 - Thanks - Emily===
*[http://web.archive.org/web/20141129211604/http://xkcd.com/ 2014-11-29]
**[[1453: fMRI]] was still up when it changed.
***It was to thanks for all the help his friend Emily with cancer got through among other his previous header text [[#2014-11-27 - Help Emily| Help Emily]].
***That only needed to be up two days before the goal was met.
**The text was:
***Thank you for helping my friend Emily.
***It means so much.
**Ended three days later while [[1454: Done]] was up [http://web.archive.org/web/20141202065133/http://xkcd.com/ 2014-12-02].

===2014-11-27 - Help Emily===
*[http://web.archive.org/web/20141127005239/http://xkcd.com/ 2014-11-27]
**[[1452: Jurassic World]] came out as it changed.
***It was to help a friend who got cancer by raising money for her.
**The text was:
***Hey all. My friend Emily—the economist who helped
***me with my {{xkcd|980|money chart}}—has been fighting cancer. She's
***having a rough time and could use some [http://web.archive.org/web/20141128183414/http://www.gofundme.com/e07dqk help]. Thank you.
**There are two links, one to the [[980: Money]] comic she helped Randall create, and one for her Go Fund Me page to raise money for her cancer cure.
***The help link above is to the archived version from that time, but the link was still active in August 2019: [https://www.gofundme.com/e07dqk Helping Emily Fight Cancer].
**Ended while [[1453: fMRI]] was up [http://web.archive.org/web/20141128070838/http://www.xkcd.com/ 2014-11-28].
***She did thus not get a permanent header as did Becky on the [[#Seven_Years|Seven Years]] comic.

===2014-10-02 - what if? bestseller===
*[http://web.archive.org/web/20141002211139/http://xkcd.com/ 2014-10-02]
**[[1428: Move Fast and Break Things]] was up when it changed from the [[#2014-09-02 - what if? book out|book is out]].
**This was a month after the ''[[What If? (book)|What If?]]'' book came out.
***It added a line of red text beneath the previous header to announce that the book was the #1 New York bestseller.
**The text was:
***My book is out!
***(#1 New York bestseller!)
**The entire image was a link to the [https://whatif.xkcd.com/book/ The Book] page on the [https://whatif.xkcd.com/ what if?] page on xkcd. post.
**Ended while [[1451: Background Screens]] was up [http://web.archive.org/web/20141125234520/http://xkcd.com/ 2014-11-25].

===2014-09-04 - what if? book out===
*[http://web.archive.org/web/20140904150600/http://xkcd.com/ 2014-09-04]
**[[1416: Pixels]] was up when it changed from the [[#2014-09-02 - what if? book out today|book is out today]].
**This was two days after the ''[[What If? (book)|What If?]]'' book came out.
***It only removed to today from the previous header, that had only been up two days.
**The text was:
***My book is out!
**The entire image was a link to the [https://whatif.xkcd.com/book/ The Book] page on the [https://whatif.xkcd.com/ what if?] page on xkcd. post.
**Ended while [[1428: Move Fast and Break Things]] was up [http://web.archive.org/web/20141001130827/http://xkcd.com/ 2014-09-01].

===2014-09-02 - what if? book out today===
*[http://web.archive.org/web/20140902125802/http://xkcd.com/ 2014-09-02]
**[[1415: Ballooning]] was up when it changed from the [[#2014-07-23 - what if? book tour|book tour header]].
**This was the day the ''[[What If? (book)|What If?]]'' book came out. [[Cueball]] standing to the left of the text with arms raised shouts this out.. The word Book is underlined and blue to indicate a link.
**The text was:
***My book is out today!
**The entire image was a link to the [https://whatif.xkcd.com/book/ The Book] page on the [https://whatif.xkcd.com/ what if?] page on xkcd. post.
**Ended while [[1416: Pixels]] was still [http://web.archive.org/web/20140903134518/http://xkcd.com/ 2014-09-03].

===2014-07-23 - what if? book tour===
*[http://web.archive.org/web/20140723180600/http://xkcd.com/ 2014-07-23]
**[[1398: Snake Facts]]
**This was a promotion of his book tour for the ''[[What If? (book)|What If?]]'' book made by [[Cueball]] standing to the left of the text with arms raised. Several parts of the text was underlined and blue to indicate links.
**The text was:
***I'm going on a book tour! click here for a list of stops.
***Or click anywhere-this whole image is one link because I've never gotten the hang of HTML imagemaps.
**The entire image was a link to the [[Blag]] post: [https://blog.xkcd.com/2014/07/22/what-if-book-tour/ What If book tour!].
***Later Randall commented on this lacking ability in the comic: [[1572: xkcd Survey]].
***He also mentions it in one of the [[#xkcd_Header_text#2019-07-09_-_Drawings_from_How_To|promotions]] for his [[How To]] book.
***He much later he again mentions that html is hard, thus explaining why the entire image is a link instead of the actual blue highlighted link in one of the promotions for [[xkcd_Header_text#2022-08-11_-_Preorder_What_if.3F_2_-_with_image|what if? 2]].
**Ended while [[1415: Ballooning]] was still up [http://web.archive.org/web/20140901113916/http://xkcd.com/ 2014-09-01].

===2014-03-13 - what if? announced===
*[http://web.archive.org/web/20140313070951/http://xkcd.com/ 2014-03-13]
**[[1341: Types of Editors]] was up.
**This was the first promotion of Randall's new ''[[What If? (book)|What If?]]'' book which is shown next to two lines of text.
**The text was:
***News:
***I'm publishing a ''what if'' book!
**The entire image was a link to the [[Blag]] post: [https://blog.xkcd.com/2014/03/12/what-if-i-wrote-a-book/ What if I wrote a book?]
**Ended while [[1397: Luke]] was up [http://web.archive.org/web/20140722142115/http://xkcd.com/ 2014-07-22].

===2014-01-09 - Back to standard text===
*[https://web.archive.org/web/20140109190927/http://www.xkcd.com/ 2014-01-09]
**When [[1314: Photos]] was still up when the text returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**It stayed until [https://web.archive.org/web/20140312070248/http://xkcd.com/ 2014-03-12] when [[1340: Unique Date]] was up, a bit more than two months.

===2013-12-21 - Deadline for Christmas shipping has passed===
*[https://web.archive.org/web/20131221043417/http://www.xkcd.com/ 2013-12-21]
**It changed when [[1306: Sigil Cycle]] came out.
**This came up when it was too close to Christmas in 2013 for shipping to arrive in time for Christmas. And Randall makes a note of this, but lets people know that they could still buy presents...
**The text was
***The deadline for guaranteed Christmas shipping has passed, but if you order something from the [http://store.xkcd.com/ xkcd store], we'll get it to you as fast as possible!
**Ended when [[1314: Photos]] was up on [https://web.archive.org/web/20140108181520/http://www.xkcd.com/ 2014-01-08].

===2013-12-06 - Empty header===
*[https://web.archive.org/web/20131206213503/http://xkcd.com/ 2013-12-06]
**It changed when [[1300: Galilean Moons]] came out.
***There just where no header text. This has not happened since. It looks really weird.
**Ended when [[1305: Undocumented Feature]] was up on [https://web.archive.org/web/20131220005306/http://xkcd.com/ 2013-12-20].

===Changes not documented yet 3===
*More changes will for sure be here between this and the one below.

====Interesting links in the Archive 3====
*Just put the link here with a date and maybe a short note:
*[https://web.archive.org/web/20131205202730/http://xkcd.com/ 2013-12-05]: Xmas sale before above
*[https://web.archive.org/web/20130315162227/http://xkcd.com:80/ 2013-03-15]: Empty follows below

===2013-03-15 - Empty header===
*[https://web.archive.org/web/20130315162227/http://xkcd.com:80/ 2013-03-15]
**It changed while [[1186: Bumblebees]] was on the front page.
***After the text saying a comic would be delayed disappeared no text replaced this.
***So the header was left empty!
**This lasted until [https://web.archive.org/web/20130318072820/http://xkcd.com/ 2013-03-18] while [[1187: Aspect Ratio]] was up.

===2013-03-13 - Comic will be delayed===
*[https://web.archive.org/web/20130313133631/http://xkcd.com/ 2013-03-13]
**It changed when [[1184: Circumference Formula]] came out, likely because the next comic was delayed.
***But there is a gap of three days before where no archived version exist, so cannot say if there where more than a few hours with this text.
**The text:
***The comic will be delayed until late morning EDT.
**Ended when [[1185: Ineffective Sorts]] was up on [https://web.archive.org/web/20130313175306/http://xkcd.com:80/ 2013-03-13].
***That was later same day as the first archived version. But could have been longer as mentioned above.

===2012-11-26 - xkcd store===
*[https://web.archive.org/web/20121126235628/http://xkcd.com/1138/ 2012-11-26]
**It changed while [[1138: Heatmap]] was up.
***Notice that the above link is not from the main page, but from {{xkcd|1138}}.
***There was a gap of five days in the archive of the main page.
***The first day that it was archived from the front page was on [https://web.archive.org/web/20121201111432/http://xkcd.com/ 2012-12-01], while [[1141: Two Years]] was up.
**The standard header text is replaced with an image that makes it seem like a rip is being torn in the white region where the text used to be. Beneath the white material that has now been ripped, some text can partly be seen. It is possible to read it.
**The text:
***xkcd store
****The image is a link to the [http://store.xkcd.com/ xkcd store] (tadaaa!)
**Ended when [[1183: Rose Petals]] was up on [https://web.archive.org/web/20130311073948/http://xkcd.com:80/1183/ 2013-03-11]
***The above link is from {{xkcd|1183}}.
***Last time the front page was archived with it was though on [https://web.archive.org/web/20130309010403/http://xkcd.com/ 2013-03-09].

===2012-10-24 - Back to standard text===
*[https://web.archive.org/web/20121024082017/http://xkcd.com:80/ 2012-10-24]
**While [[1124: Law of Drama]] was on the front the header returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**It stayed until [https://web.archive.org/web/20121126035129/http://xkcd.com:80/ 2012-11-26] when [[1138: Heatmap]] was up, a few days more than a month.

===2012-10-17 - New What-If - Lightning===
*[https://web.archive.org/web/20121017232102/http://xkcd.com/1121/ 2012-10-17]
**Probably while [[1122: Electoral Precedent]] was up.
***But the link above showing it was up on the 2012-10-17 is from the previous comics page {{xkcd|1121}} [[1121: Identity]].
***But the first version archived with this header is saved on [https://web.archive.org/web/20121018082304/http://xkcd.com/ 2012-10-18]
**Randall promotes another New What-If article.
***See the ''[[what if? (blog)|what if?]]'' article ''{{what if|16|Today's topic: Lightning}}''.
**The text
***New What-If article:
***[http://what-if.xkcd.com/16/ What if lightning struck while you were ...]
**This lasted until [https://web.archive.org/web/20121023023404/http://xkcd.com/1121/ 2012-10-23] when [[1124: Law of Drama]] was on the front page
***This link is though from {{xkcd|1121}}.
***The last this version was archived on the front page was the day before on [https://web.archive.org/web/20121022120008/http://xkcd.com:80/ 2012-10-22].

===2012-10-10 - New What-If - Mariana Trench Explosion===
*[https://web.archive.org/web/20121010003837/http://xkcd.com/ 2012-10-10]
**[[1118: Microsoft]] was still up at this time.
**Randall promotes another New What-If article.
***See the ''[[what if? (blog)|what if?]]'' article ''{{what if|15|Mariana Trench Explosion}}''.
**The text
***New What-If article:
***[http://what-if.xkcd.com/15/ What if you set off a nuclear bomb in the Mariana Trench?].
**This lasted until [https://web.archive.org/web/20121016055538/http://xkcd.com:80/ 2012-10-16] when [[1121: Identity]] was up.

===2012-10-02 - This week's What-If - Short Answer Section===
*[https://web.archive.org/web/20121002231724/http://www.xkcd.com/ 2012-10-02]
**[[1115: Sky]] was still up at this time.
**Randall promotes another New What-If article.
***See the ''[[what if? (blog)|what if?]]'' article ''{{what if|14|Short Answer Section}}''.
**The text
***In this week's What-If article I [https://what-if.xkcd.com/14/ answer multiple reader questions].
**This lasted until [https://web.archive.org/web/20121008112434/http://xkcd.com/ 2012-10-08] when [[1118: Microsoft]] was up.

===2012-09-26 - New What-If - Laser Pointer===
*[https://web.archive.org/web/20120926163111/http://xkcd.com/1108/ 2012-09-26]
**[[1113: Killed in Action]] was up at this time.
***The link above showing it happened on the 26th is from {{xkcd|1108}}
***The first day this version was archived on the front page was on [https://web.archive.org/web/20120928003838/http://xkcd.com:80/ 2012-09-28]
**Randall promotes another New What-If article.
***See the ''[[what if? (blog)|what if?]]'' article ''{{what if|13|Laser Pointer}}''.
**The text
***New What-If article:
***[http://what-if.xkcd.com/13/ If everyone aimed a laser pointer at the Moon at once, would it change color?]
**This lasted until [https://web.archive.org/web/20121001080517/http://xkcd.com/ 2012-10-01] when [[1115: Sky]] was up.

===2012-09-18 - what-if.xkcd.com - Raindrop===
*[https://web.archive.org/web/20120918143653/http://www.xkcd.com/1108/ 2012-09-18]
**[[1109: Refrigerator]] was still up at this time.
***The link above showing it happened on the 18th is from {{xkcd|1108}}
***The first day this version was archived on the front page was on [https://web.archive.org/web/20120919015232/http://xkcd.com/ 2012-09-19]
**Randall promotes another What-If article on the what-if page.
***See the the ''[[what if? (blog)|what if?]]'' article ''{{what if|12|Raindrop}}''.
**The text
***what-if.xkcd.com: [https://what-if.xkcd.com/12/ What if all of a storm's water fell in a single raindrop?].
**This lasted until [https://web.archive.org/web/20120925090123/http://xkcd.com:80/ 2012-09-25] when [[1112: Think Logically]] was up.

===Changes not documented yet 2===
*The above is the last documented.
**There will for sure be more changes earlier than this.

====Interesting links in the Archive 2====
*Just put the link here with a date and maybe a short note:
*[https://web.archive.org/web/20120917052827/http://xkcd.com:80/ 2012-09-17]: What if Droppings ends.
*[https://web.archive.org/web/20120718231719/http://www.xkcd.com/ 2012-07-18] Next stores header text

===2012-07-10 - New: what-if.xkcd.com===
*[https://web.archive.org/web/20120710114846/http://xkcd.com/1078/ 2012-07-10]
**This was a special change happening over a few days. The above "new" header text from the given date is actually shown on the previous comic [[1078: Knights]].
***Another example from [https://web.archive.org/web/20120710072249/http://xkcd.com:80/1070 2012-07-10] is shown for [[1070: Words for Small Sets]].
**The comic on the main page released on [https://web.archive.org/web/20120709045709/http://xkcd.com:80/ 2012-07-09] was [[1079: United Shapes]], but that comic had a [[xkcd_Header_text#United_Shapes|unique header text]] upon its release.
***So both on the 9th as shown above and on [https://web.archive.org/web/20120710114846/http://xkcd.com/1078/ 2012-07-10] the header text was different on the front than on all other pages.
****As can be read in the link above, the new header text actually got incorporated into the unique text, so that after the next comic was released on [https://web.archive.org/web/20120711234408/http://xkcd.com/1079/ 2012-07-11] the current new header text and a smaller version of the original unique header text was now shown on the Unites Shapes page.
****{{xkcd|1079|And it was never changed back}}.
**The first version of the new text from the 10th was only active one day:
***The text:
****New site: what-if.xkcd.com, where I abuse science to answer hypothetical questions. I'll answer a new question every Tuesday.
*****The link was not an active link. And this was never shown on the front page, but on all other comics.
**Already on [https://web.archive.org/web/20120711223349/http://xkcd.com/1078/ 2012-07-11] when [[1080: Visual Field]] was released the new header changed a bit
***At this time it most have been shown on the front page, but the link above is again from [[1078: Knights]].
****For some reason the front page was not saved on either the 11th or 12th, so no version of the front page with Visual Field exist
****The first archived version of the front page with this new header text was from [https://web.archive.org/web/20120713154207/http://xkcd.com/ 2012-07-13] when [[1081: Argument Victory]] was on the front page.
**The final text:
***New: [http://what-if.xkcd.com/1/ what-if.xkcd.com]: abusing science to answer hypothetical questions.
***I'll answer a new reader question every Tuesday.
****This time the link was active and directs to the new ''[[what if? (blog)|what if?]]'' blog and its first entry {{what if|1|Relativistic Baseball}}
**The whole idea was that Randall released the new what if? blog on the 10th of July 2012. And thus would like to make a promotion of it.
***And then he timed it so poorly that the front page had a different header than the rest of the comics.
***It was so annoying for him that he actually changed the header for Unites Shapes manually so that page also showed the new link. Maybe even before it left the front page, but that has not been documented in the archive.
***And then he forgot about it when the header changed for all the other comics, so it is now a relic of the promotion of his first what if release.
**The what if promotion continued for a long time, but the final version from above only lasted until 17th at the latest. There is again no archived versions of the front page from the 15th, 16th or 17th.
***The last time it was archived on the front page was [https://web.archive.org/web/20120714062857/http://xkcd.com/ 2012-07-14], when [[1081: Argument Victory]] was still up.
***But on [https://web.archive.org/web/20120715070938/http://xkcd.com:80/1081/ 2012-07-15] it was still shown on the page for Argument Victory and same for [https://web.archive.org/web/20120716235458/https://www.xkcd.com/998/ 2012-07-16] on [[998: 2012]]
****So seemed it stayed up while [[1082: Geology]] was up on the 16-17/7.

===2012-04-09 - Standard text plus store link===
*[https://web.archive.org/web/20120409190952/http://xkcd.com/1026/ 2012-04-09]
**It changed when [[1040: Lakes and Oceans]] came up.
***The above link to prove this is though from comic {{xkcd|1026}} [[1026: Compare and Contrast]] the first to be found that where archived on the 9th.
***The first archived version on the main page is from [https://web.archive.org/web/20120411053543/https://xkcd.com/ 2012-04-11] when [[1041: Whites of Their Eyes]] was up.
***There where no archived version of the front page on the 9th or 10th while Lake and Oceans was up. So it was also first on the 11th that this new text could be seen, but only when it had moved to its own page number [https://web.archive.org/web/20120411052948/http://xkcd.com/1040/ 1040].
****The change probably came because of this special comic, which may became a [https://store.xkcd.com/collections/posters/products/lakes-oceans-poster poster].
**The update was to add a promotion for the store under the standard header text.
**The text
***XKCD updates every Monday, Wednesday, and Friday.
***You can get prints, posters, and t-shirts in the [http://store.xkcd.com/ store].
**This lasted until [https://web.archive.org/web/20120709004956/http://www.xkcd.com/ 2012-07-09] when [[1078: Knights]] was up, exactly three months, so although not only the standard text, the standard text was first for three months and three days, see [[#2012-04-05 - Back to standard text|below]].

===2012-04-05 - Back to standard text===
*[https://web.archive.org/web/20120405195956/http://www.xkcd.com/1021/ 2012-04-05]
**While [[1038: Fountain]] was on the front the header returned to the standard xkcd header:
***xkcd updates every Monday, Wednesday, and Friday.
**The link above to prove the date is seen on [[1021: Business Plan]].
***The first archived version on front page is from [https://web.archive.org/web/20120406111048/http://xkcd.com/ 2012-04-06], when [[1039: RuBisCO]] was up.
***A version showing Fountain with this can be found on it's own page {{xkcd|1038}} on [https://web.archive.org/web/20120406085618/http://xkcd.com:80/1038/ 2012-04-06].
****When it was archived while on the front page it still had the previous header on [https://web.archive.org/web/20120404210927/http://xkcd.com:80/ 2012-04-05].
**It stayed up, unchanged, until [https://web.archive.org/web/20120408200414/http://xkcd.com:80/ 2012-04-08] when [[1039: RuBisCO]] was up. So only three days.
***But [[#2012-04-09- Standard text plus store link|the change]] did not remove the standard text but just added a link to the store. And this version, still with the standard text at the top stayed for three more months.

===2012-03-28 - Visiting Newport News===
*[https://web.archive.org/web/20120328103319/http://xkcd.com/ 2012-03-28]
**[[1035: Cadbury Eggs]] was on the front when it changed.
***From the end of March 2012, there is a problem with the archived versions of xkcd, so they do not load properly and do not include the comic picture.
**It was to announce a talk Randall gave at his old school.
**The text:
***I'm [https://blog.xkcd.com/2012/03/22/im-visiting-cnu-on-april-4th/ visiting] Newport News, VA next week, where I'll be speaking at CNU, my old school. If you want to come, reserve a seat [https://web.archive.org/web/20120329214411/http://www.cnu.edu/pcs/xkcd/index.asp here]!
****The first link it to a post in the [[Blag]]: [https://blog.xkcd.com/2012/03/22/im-visiting-cnu-on-april-4th/ I’m visiting CNU on April 4th].
****The other link is no longer working, but the link above goes to an archived version.
**There was a special situation with this header text. For three days it was not on the front page, as the [[:Category:April fools' comics|April fools' comic]] [[1037: Umwelt]] came out and stayed from April 1st to April 3rd on the front page.
***This comic had it's own [[#Unique header text|unique header text]] from the start, one that has [[#Umwelt|stayed like this]] since!
****So from [https://web.archive.org/web/20120401151639/http://xkcd.com:80/ 2012-04-01] to [https://web.archive.org/web/20120403223453/http://www.xkcd.com/ 2012-04-03] the front page had another header:
*****You can get posters, prints, and t-shirts in the [https://store.xkcd.com/ xkcd store].
***But all the other comics kept the Visiting header on all three days as shown here:
****[https://web.archive.org/web/20120401214214/http://xkcd.com:80/1036/ 2012-04-01] from[[1036: Reviews]].
****[https://web.archive.org/web/20120402150258/http://xkcd.com/1019 2012-04-02] from [[1019: First Post]].
****[https://web.archive.org/web/20120403164523/http://xkcd.com:80/1036/ 2012-04-03] from [[1036: Reviews]].
*****The one from the 2nd of April was hardest to find, but the most important, because that was clearly in the time period where Umwelt was up, thus definitely proving that the other pages had a different header than the front page. This is rare.
**It returned to the front page on [https://web.archive.org/web/20120404210927/http://xkcd.com:80/ 2012-04-04] and stayed up until [https://web.archive.org/web/20120405195956/http://www.xkcd.com/1021/ 2012-04-05] when [[1038: Fountain]] was up.
***The link from the 5th though is from {{xkcd|1021}} [[1021: Business Plan]], the only comic archived on the 5ht to be found.
****The previous link was the last time it was archived while on the front page.

===2012-03-12 - xkcd Holistic Browser===
*[https://web.archive.org/web/20120312185125/http://xkcd.com/ 2012-03-12]
**[[1028: Communication]] was up at the time.
***From here the archive doesn't load the page properly so it is really boring to document. This goes for both first and last day of this text.
**The text:
***New: [https://web.archive.org/web/20120318153220/http://holistic.xkcd.com/ holistic.xkcd.com], the least useful web navigation tool ever.
****The link is now dead, but the link above is to an archived version.
****On that page there is the following text:
*****The XKCD Holistic Browser
*****Because we are all one.
*****Type a web address
*****and you'll be taken to one
*****typed by someone else.
*****URL:
*****Warning: This allows strangers to direct your browser!
*****They may send you to pages containing
*****porn, viruses, or Justin Bieber fanfiction.
*****At the very least, turn on private browsing.
**During the time this header was active the comic [[1031: s/keyboard/leopard/]] came out.
***It had its own [[xkcd_Header_text#Unique_header_text|unique header text]] which thus replaced this text on the front page for two days.
***But it did not replace it on all the other pages so this was the active header text during the entire period, see more here: [[xkcd_Header_text#s.2Fkeyboard.2Fleopard.2F|s/keyboard/leopard/]]
**This lasted till [https://web.archive.org/web/20120327050311/http://xkcd.com/1033 2012-03-27] while [[1034: Share Buttons]] was up.
**But the last archived version with this on the front page was the day before [https://web.archive.org/web/20120326180811/http://xkcd.com// 2012-03-26].
***The link from 27th is from an archived version of [[1033: Formal Logic]].
*[https://web.archive.org/web/20120311135259/http://xkcd.com/ 2012-03-11] Text before. For net entry below...

[[Category:Design of xkcd.com]]
{{xkcdmeta}}

2790: Heat Pump

2023-07-24T02:37:26Z

Scyrmion: Undo revision 318360 by 172.69.214.159 (talk)

{{comic
| number = 2790
| date = June 16, 2023
| title = Heat Pump
| image = heat_pump_2x.png
| imagesize = 740x400px
| noexpand = true
| titletext = If I'm not going to upgrade to a powered one, I should at LEAST stop leaving the door open so often.
}}

==Explanation==
{{incomplete|Created by a BIG CHUNGUS HEAT PUMPER. Do NOT delete this tag too soon.}}

A {{w|heat pump}} is a system which uses a refrigeration cycle to transfer heat from a relatively colder area (typically outdoors) to a relatively warmer space (usually the interior of a building). Such a system works by compressing a refrigerant gas in the warmer space. Gases tend to warm when compressed, and this allows heat to flow from the refrigerant into the surrounding air, which causes the refrigerant to condense into a liquid. This liquid then flows to external coils where the pressure is low enough that it can evaporate, causing the refrigerant to cool, which allowed heat to flow into the refrigerant from the cool environment. This gives the warmer space a constant source of heat, and the only energy cost is what's required to run the compressor.

In this comic, [[Cueball]] has a ''manual'' heat pump, which appears to operate on the same principle, but uses only a bellows-type container (presumably filled with refrigerant), and is powered only by his own muscles. The strip denotes the warm area with light red coloring, and the cooler outdoors with light blue. When he carries the container outdoors, he allows it to expand, causing it to become colder than the surroundings (indicated by it becoming a darker blue). He then waits until it warms to near the surrounding temperature (the blue becomes less intense), and carries it inside, where he physically presses the container together. This causes the gas in the container to become hotter than the room (denoted by it becoming a darker red), and it's indicated to be radiating that heat into the room, which is the basic purpose of the whole exercise. The final panel shows him carrying the bellows outside, presumably to repeat the whole cycle.

While this design is theoretically possible, and is a fun illustration of how heat pumps work, it obviously wouldn't be practical in real life (as suggested by the caption). This is true for a number of reasons. First, the pressure required would be difficult for a human to exert with their bare hands. Even if they could do so, they would quickly tire of the exertion, and be unable to sustain the process for very long. The person would need to hold the container shut while it was transferring heat to the environment, which would take significant time, particularly since the container doesn't have much surface area to transfer heat. Depending on the refrigerant, the container could become dangerously hot and/or dangerously cold, or at the very least, unpleasant to hold directly. And the person is physically moving both the container and their own body in and out of the house on every cycle which a) involves a great deal of unnecessary effort and b) means that the person has to spend a large amount of their time outside in the cold. Even if particularly strong and determined person tried to warm a house this way, with no regard for efficiency, the air transfer resulting from going in and out through the door would probably exceed the amount of warming on each cycle, meaning that it wouldn't warm the house significantly. This is lampshaded by the title text, which implies that Cueball leaves the door open some of the time, which would undo nearly all of the benefit of this process. The logistics of opening and shutting a door when both hands are occupied is also unexplained.

==Transcript==
:[Cueball is holding an accordion-shaped device in his hands, in the compressed state. He is walking towards an open door, while keeping the device compressed, as indicated with movement lines around it and his hands and arm. The door and the wall it is attached to are white, and the floor and the two steps down to the ground, as well as the ground outside, are black. But the inside of the house has light red shade, and so does the device. And outside the background is light blue.]

:[The panel has panned to the right so less of the inside of the house and more outside the house can be seen. Cueball has already closed the door and walked down the steps, but he is still walking a bit away from the house, while continuing to force the device to keep contracted. The colors inside and outside are the same as in the first panel, and the device is also still the same light red color, but now this is in contrast to the light blue background.]

:[Same setting as previous panel. Cueball has stopped just a pace out from the stairs. Here he extends the device holding his hands far apart. This turns the inside of the device blue, clearly darker than the light blue background. Above Cueball is a description of what he did:]
:''Release''

:[Same setting as previous panel. Cueball looks behind him at the closed door, but has kept the device in the same outstretched position. And now the device has turned back to light blue, matching the color of the background.]

:[The panel has panned back to the original setting showing more of the inside of the house. Cueball is walking in through the open door, the device is still light blue and outstretched between his hands that are kept far apart.]

:[Same setting as previous panel. Cueball stops just inside. He has closed the door. He squeezes the device between his hands, using force as indicated with movement lines around his elbows. The device is now as compressed as in the first panel, but now it has turned red, clearly darker than the light red background inside the house. Above Cueball is a description of what he did:]
:''Squeeze''

:[Same setting as previous panel. Cueball looks at the door while holding the compressed device a bit away from him. It is clearly glowing with many red lines emanating away from it in all directions. Although the inside of the device is still darker than the light red color inside the house, it is already here clearly a lighter red than in the previous panel. Above Cueball is a description of what happens:]
:''Radiate''

:[Same setting as previous panel. Cueball is again walking out of the now open door. The color inside the house is now clearly darker red than in all the previous panels. The device has the same color as the inside background. The light blue background outside has not changed through the panels.]

:[Caption below the panel:]
:Manual heat pumps are such a pain.

==Trivia==
*This comic appearing on 16 June 2023, only a few days after a conversation in German media and politics about a [https://www.theguardian.com/world/2023/jun/14/germany-coalition-staves-off-implosion-with-11th-hour-heating-law-amendment controversially drafted law] to regulate heating systems in homes and buildings.
**It is possible this was an inspiration for this comic, although not very likely if it was only in German news.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Comics featuring Cueball]]
[[Category:Physics]]

2788: Musical Scales

2023-07-24T02:36:54Z

Scyrmion: Undo revision 318359 by 172.69.214.159 (talk)

{{comic
| number = 2788
| date = June 12, 2023
| title = Musical Scales
| image = musical_scales_2x.png
| imagesize = 326x222px
| noexpand = true
| titletext = In the Hall of the Mountain King was accidentally composed on log/log paper.
}}

==Explanation==
{{incomplete|Created by a SEMI-LOG MOUNTAIN. Do NOT delete this tag too soon.}}

In {{w|Musical_notation#Modern_staff_notation|standard Western musical notation}}, the horizontal position of a note indicates its relative temporal position in the piece, and the vertical position of a note denotes  its pitch; but the pitch is really a logarithm of the note's frequency (every octave/seven named notes/12 semitones/13 named notes including accidentals equals a doubling of frequency), so it's a semi-log plot of sorts. The comic thus explores what a notation would look like if the horizontal axis behaved this way instead. Likewise, the vertical axis has been rendered linearly by frequency, with the normally equally-set lines on a normal musical staff stretching to compensate for the increasing jumps between pitches.

[[File:SimpleGifts.png|thumb|The nonstandard music notation depicted in the comic is the opening five measures of "{{w|Simple Gifts}}" ([https://upload.wikimedia.org/wikipedia/commons/1/16/Simple_Gifts_-_Pendyrus_Choir-cory_Band.ogg listen.])]]

[[Randall]] may have mistakenly assumed that the lines of a music stave represent a linear increase in pitch and thus an exponential increase in frequency. He has thus mapped them onto a logarithmic scale by doubling the space between each successive line of the stave - one space between the bottom two lines, then two spaces, then four, then eight. In fact, the lines and the spaces between them correspond to notes in the C Major scale, which have unequal gaps between them. It is also possible that he is aware of this small inaccuracy and chose to ignore it in the name of humor.

The title text purports to explain how {{w|In the Hall of the Mountain King}}, which progressively increases in tempo/speed and intensity from an initially subtle start into a rapid hustle towards a series of crescendos at the end, was written on {{w|Log–log plot|log-log paper}}, that features nonlinear expansion in ''both'' its axes (in order to render various exponential graphs linear, often for the purposes of ease of understanding). Rather than these features being a deliberate composition decision, this says that they're only the result of how it was written down, or thenceforth read. The accident would have to be that music was originally written ''as though'' for log-log paper, using shorter notes as the piece went on, intended to have consistent actual durations throughout the piece—and then ''interpreted'' on a linear time scale, such that the later notes actually had shorter durations, speeding up the piece.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[The sheet music for "Simple Gifts" on a distorted staff.]
:[Caption below the panel]:
:When transcribing music, remember to put ''frequency'' on a log scale and ''time'' on a linear one, not the other way around.

{{comic discussion}}

[[Category:Music]]

2672: What If? 2 Flowchart

2023-07-24T02:35:38Z

Scyrmion: Undo revision 318352 by 172.69.214.159 (talk)

<noinclude>:''For other instances of this title, see [[What If (disambiguation)]]</noinclude>.
{{comic
| number = 2672
| date = September 13, 2022
| title = What If? 2 Flowchart
| image = what_if_2_flowchart_2x.png
| imagesize = 740x729px
| noexpand = true
| titletext = Don't worry, the dogs are all fine. That's actually kind of the problem.
}}

==Explanation==
{{incomplete|Created by an EARTH-DESTROYING FLOWCHART - All pathways are mapped, but they need further explanation. Do NOT delete this tag too soon.}}
This comic celebrates the release of [[Randall|Randall's]] new book, ''[[What If? 2]]'', which was released on the same day as this comic: Tuesday, September 13, 2022. The comic thus appeared on a Tuesday, replacing that week's normal Wednesday release to coincide with the release day. The [[header text]] also [[header text#2022-09-13 - What if? 2 is available now|changed that day]] to shout out that the book was released on that day. (It had been counting down the last week, from [[header text#2022-09-07 - Less than one week to What if? 2 comes out|less than a week]], [[header text#2022-09-12 - Three days to What if? 2 comes out|three days]] and [[header text#2022-09-12 - One day to What if? 2 comes out|one day]] while the previous comics [[2670: Interruption]] and [[2671: Rotation]] was on the front page — the latter only for one day due to the Tuesday release).

While announcing that his '''What If? 2''' book is finally out (the entire comic is a [https://xkcd.com/whatif2 link] to the books page on xkcd), Randall gives us a flowchart we can follow to find an article in the book relating to the situation in the flowchart. Once a relevant possibility is reached in the flowchart a page number in the book is given. It thus assumes the reader plans to do something that the advice in '''What If 2''' could be helpful for, which hopefully is highly unlikely. See the [[#Table of questions in the flowchart|table below]] for explanations on the individual options in the flowchart.

The title text refers to the loop near the bottom of the flowchart, which involves a series of questions asking if the reader wants a progressively larger number of dogs. The number of dogs offered increases several times, and if that is sufficient the flowchart ends with fulfillment. Eventually it will have an option for the scenario where all in the universe is consumed by dogs, which directs to page 308 of the book. The title text references this last option by assuring the reader that all of the dogs are doing fine, but goes on to state that in itself could cause problems. For instance, those dogs could impede the progress of all life on Earth and elsewhere and/or reproduce and create an even larger population of dogs.

==Table of questions in the flowchart==
The flowchart questions and their possible answers are described in the following table(Also in [[2672: What If? 2 Flowchart/Table]]):
{| class="wikitable"
! Text
! Connected
!Reference
|-
| Congratulations, you have acquired a copy of ''What if? 2!'' (out today, [https://xkcd.com/whatif2 xkcd.com/whatif2])
| What do you want to do today?
|
|-
| rowspan="3" | What do you want to do today?
| I don't know: Reflect on your life
|
|-
| Go to neighborhood party: Do you like your neighbor?
|
|-
| Brunch: Where do you go?
|
|-
| rowspan="2" | Do you like your neighbor?
| Yes: '''Page 78'''
| Chapter 17: Swing Set
|-
| No: What do you want to bring?
|
|-
| rowspan="4" | What do you want to bring?
| Jupiter: '''Page 70'''
| Chapter 15: Jupiter Comes To Town
|-
| Iron vapor: '''Page 18'''
| Diagram of iron released into atmosphere by various sources
|-
| Weird Opinions: Do you think bugs should get paid?
|
|-
| My fake identity: Have you committed any crimes?
|
|-
| rowspan="2" | Do you think bugs should get paid?
| Yes: '''Page 96'''
| Short answer question on how much money bugs would make if paid what they contribute to the US economy
|-
| No: Reflect on your life
|
|-
| rowspan="2" | Where do you go?
| The sun: Are you wearing sunscreen?
|
|-
| A diner: How do you get there?
|
|-
| rowspan="2" | Are you wearing sunscreen?
| Yes: '''Page 319'''
| Chapter 62: Sunscreen
|-
| No: How do you want to visit?
|
|-
| rowspan="2" | How do you want to visit?
| Briefly, via teleporter: '''Page 314'''
| Chapter 61: Into the Sun
|-
| I want to land a probe on the surface: '''Page 323'''
| Chapter 63: Walking on the Sun
|-
| rowspan="3" | How do you get there?
| Helicopter: Where do you sit in the helicopter?
|
|-
| Plane: '''Page 83''', Are you flying near any strong magnets?
| Chapter 18: Airliner Catapult
|-
| Car: How do you want to drive?
|
|-
| rowspan="2" | Where do you sit in the helicopter?
| On the rotor: '''Page 6'''
| Chapter 2: Helicopter Ride
|-
| Inside: Are you flying near any strong magnets?
|
|-
| rowspan="2" | Are you flying near any strong magnets?
| Yes: '''Page 171'''
| Last page of Chapter 32: MRI Compass
|-
| No: Okay, there's the diner!
|
|-
| rowspan="2" | Okay, there's the diner!
| Keep driving forever: '''Page 128'''
| Chapter 25: Tire Rubber; likely a mistake. Should be Page 22; Chapter 5: Cosmic Road Trip
|-
| Stop: What food do you order?
|
|-
| rowspan="5" | What food do you order?
| The sun: '''Page 303'''
| Short Answers Section, what would a star taste like
|-
| Breadsticks: '''Page 299'''
| Short Answers Section, how slow to chew in order to infinitely eat breadsticlS
|-
| Ammonia: '''Page 284'''
| Chapter 57: Ammonia Tube
|-
| A cloud: '''Page 195'''
| Chapter 38: Eat a Cloud
|-
| Soup: How much soup?
|
|-
| rowspan="2" | How much soup?
| 1 bowl: '''Page 197'''
| illustration of various food volumes with air removed
|-
| 1040 bowls: '''Page 1'''
| Chapter 1: Soupiter
|-
| rowspan="3" | How do you want to drive?
| Fast: '''Page 180'''
| Chapter 35: No Rules Nascar
|-
| With a bird: '''Page 171'''
| Last page of Chapter 32: MRI Compass, likely a mistake. Should be Page 176; Chapter 34: Bird Car
|-
| Normal: Does this road lead to Rome?
|
|-
| rowspan="3" | Does this road lead to Rome?
| Yes: Pick a different road
|
|-
| No, but it should: '''Page 154'''
| Chapter 29: Build Rome in a Day
|-
| No: Okay, there's the diner!
|
|-
| Pick a different road
| Does this road lead to Rome?
|
|-
| rowspan="3" | What do you really want to do?
| I want to shoot a laser at a sorceress: '''Page 43'''
| Short Answer Section, can I shoot a laser around the Earth
|-
| I want to tell people things about eggs: What kinds of things about eggs?
|
|-
| I want a dog: Get a dog
|
|-
| rowspan="2" | What kinds of things about eggs?
| True things: '''Page 300'''
| Short Answer Section, can you make an egg float by filling it with helium
|-
| False things: '''Page 258'''
| One paragraph reveals that this course of action would be illegal in California, but fine elsewhere
|-
| Get a dog
| Are you satisfied?
|
|-
| rowspan="2" | Are you satisfied?
| Yes: '''Fulfillment!'''
|
|-
| No, I think we need more dogs: Get more dogs
|
|-
| Get more dogs
| Enough? (1)
|
|-
| rowspan="2" | Enough? (1)
| Yes: '''Fulfillment!'''
|
|-
| No. You can never have too many dogs: More dogs
|
|-
| More dogs
| Enough? (2)
|
|-
| rowspan="2" | Enough? (2)
| Yes: Fulfillment!
|
|-
| No. You can literally never have too many dogs. We should not stop until all that exists in the cosmos has been consumed by a happy, barking mass: '''Page 308'''
| Chapter 60: Dog Overload
|-
| rowspan="3" | Have you committed any crimes?
| Not sure: '''Page 255'''
| Chapter 52: Read All The Laws
|-
| Yes: Travel back in time to undo your crimes
|
|-
| No: Do you want to?
|
|-
| rowspan="2" | Do you want to?
| No: '''Page 255'''
| Chapter 52: Read All The Laws
|-
| Yes: '''Page 258'''
| Header: Do I Have To Read All These Laws (section within Chapter 52: Read All The Laws
|-
| Travel back in time to undo your crimes
| '''Page 277'''
| Chapter 56: Walking Backward in Time
|}

==Transcript==
:[A large flowchart, with the first box in the top left corner.]
:Box 1: Congratulations, you have acquired a copy of '''''What if? 2!''''' (out today, xkcd.com/whatif2)
::[Arrow to Box 2]
:Box 2: What do you want to do today?
::[Arrow to Box 3] I don't know
::[Arrow to Box 4] Go to neighborhood party
::[Arrow to Box 5] Brunch
:Box 3: Reflect on your life
::[Arrow to Box 6]
:Box 4: Do you like your neighbor?
::[Arrow to the words 'page 78'] Yes
::[Arrow to Box 7] No
:Box 5: Where do you go?
::[Arrow to Box 8] The Sun
::[Arrow to Box 9] A diner
:Box 6: What do you really want to do?
::[Arrow to the words 'page 43'] I want to shoot a laser at a sorceress
::[Arrow to Box 10] I want a dog
::[Arrow to Box 11] I want to tell people things about eggs
:Box 7: What do you want to bring?
::[Arrow to the words 'page 70'] Jupiter
::[Arrow to Box 12] Weird opinions
::[Arrow to Box 13] My fake identity
:Box 8: Are you wearing sunscreen?
::[Arrow to the words 'page 319'] Yes
::[Arrow to Box 14] No
:Box 9: How do you get there?
::[Arrow to Box 15] Helicopter
::[Arrow to Box 16 with the words 'page 83'] Plane
::[Arrow to Box 17] Car
:Box 10: Get a dog
::[Arrow to Box 18]
:Box 11: What kinds of things about eggs?
::[Arrow to the words 'page 300'] True things
::[Arrow to the words 'page 258', same words as from Box 19] False things
:Box 12: Do you think bugs should get paid?
::[Arrow to Box 3] No
::[Arrow to the words 'page 96'] Yes
:Box 13: Have you commited any crimes?
::[Arrow to the words 'page 255', same words as from Box 19] Not sure
::[Arrow to Box 19] No
::[Arrow to Box 20] Yes
:Box 14: How do you want to visit?
::[Arrow to the words 'page 314'] Briefly, via teleporter
::[Arrow to the words 'page 323'] I want to land a probe on the surface
:Box 15: Where do you sit in the helicopter?
::[Arrow to the words 'page 6'] On the rotor
::[Arrow to Box 16] Inside
:Box 16: Are you flying near any strong magnets?
::[Arrow to Box 21] No
::[Arrow to the words 'page 171'] Yes
:Box 17: How fast do you want to drive?
::[Arrow to the words 'page 180'] Fast
::[Arrow to Box 22] Normal
::[Arrow to the words 'page 176'] With a bird
:Box 18: Are you satisfied?
::[Arrow to the word 'Fulfillment!', same word as from Boxes 26 and 29]
::[Arrow to Box 23] No. I think we need more dogs.
:Box 19: Do you want to?
::[Arrow to the words 'page 255', same words as from Box 13] No
::[Arrow to the words 'page 258', same words as from Box 11] Yes
:Box 20: Travel back in time to undo your crimes
::[Arrow to the words 'page 277']
:Box 21: Okay, there's the diner!
::[Arrow to the words 'page 128'] Keep driving forever
::[Arrow to Box 24] Stop
:Box 22: Does this road lead to Rome?
::[Arrow to Box 25] Yes
::[Arrow to the words 'page 154'] No, but it should
::[Arrow to Box 21] No
:Box 23: Get more dogs
::[Arrow to Box 26]
:Box 24: What food do you order?
::[Arrow to the words 'page 303'] The Sun
::[Arrow to the words 'page 299'] Breadsticks
::[Arrow to Box 27] Soup
::[Arrow to the words 'page 284'] Ammonia
::[Arrow to the words 'page 195'] A cloud
:Box 25: Pick a different road
::[Arrow to Box 22]
:Box 26: Enough?
::[Arrow to the word 'Fulfillment!', same word as from Boxes 18 and 29] Yes
::[Arrow to Box 28] No. You can never have too many dogs.
:Box 27: How much soup?
::[Arrow to the words 'page 197'] 1 bowl
::[Arrow to the words 'page 1'] 1040 bowls
:Box 28: More dogs
::[Arrow to Box 29]
:Box 29: Enough?
::[Arrow to the word 'Fulfillment!', same word as from Boxes 18 and 26]
::[Arrow to the words 'page 308] No. You can literally never have too many dogs. We should not stop until all that exists has been consumed by a happy, barking mass.

{{comic discussion}}

[[Category:Flowcharts]]
[[Category:Book promotion]]
[[Category:Animals]]
[[Category:Food]]
[[Category:Time travel]]
[[Category:Space]]
[[Category:Comics with lowercase text]]
[[Category:What If?]]

2787: Iceberg

2023-07-24T02:34:33Z

Scyrmion: Undo revision 318358 by 172.69.214.158 (talk)

{{comic
| number = 2787
| date = June 9, 2023
| title = Iceberg
| image = iceberg_2x.png
| imagesize = 258x397px
| noexpand = true
| titletext = 90% of the iceberg is hidden beneath the water, but that 90% only uses 10% of its brain, so it's really only 9%.
}}

==Explanation==
{{incomplete|Created by a MISUNDERSTOOD ICEBERG. Do NOT delete this tag too soon.}}

This is one of many comics in the [[My Hobby]] series. The previous comic in this series was [[2733: Size Comparisons]], released just over 4 months prior.

The [https://www.agcas.org.uk/write/MediaUploads/Resources/ITG/iceberg_metaphor.pdf iceberg metaphor] is a famous metaphor sometimes [https://pubmed.ncbi.nlm.nih.gov/31633371/ misattributed to Freud]. Just as real a iceberg floats with the vast majority of its body below the water's surface (often simplified as 90%, which does quite closely reflect the general range of buoyancy for ice in cold sea-water), the iceberg as metaphor represents a system where the large majority is unseen, invisible, or hidden in some way.

In this case, Ponytail is using it to illustrate the fact that about 95% of the mass in the universe does not appear to be in the form of ordinary ("{{w|baryonic matter|baryonic}}") matter, but rather {{w|dark matter}} and {{w|dark energy}}. Dark matter is known to not interact at all with ordinary baryonic matter except by gravity, and has been detected only by its gravitational effects. Excluding dark energy, dark matter accounts for about 85% of the total mass of the universe. So baryonic matter is like the "tip of the iceberg," visible to us above the surface, while dark matter is like the invisible majority of the iceberg below the surface.

The questioner in the audience misunderstands the metaphor by taking it literally, thinking that Ponytail is saying that the part of an iceberg below the surface is literally made of dark matter. He points out that the {{w|Titanic}} sank after its hull was damaged by hitting the underwater part of an iceberg, which wouldn't be possible if it were made of dark matter.

The title text references the myth that we use only 10% of our brain, and we could become more intelligent or powerful by "unlocking" the remaining 90%. If icebergs had brains, and the 90% in the "dark matter" part underwater used only 10% of its brain, while the tip also used 10% of its brain, then most of the cognition would occur in the underwater part. Hence the "9%" figure would refer to the cognition occurring underwater, with 1% of its cognition occurring above water. In reality, human beings use pretty much all of their brain. They just don't use it all at the same time. The effect of using one's whole brain would depend on precisely what is meant by that -- for example, all excitatory neurons firing with no inhibition for a prolonged period would be a {{w|seizure}} (most likely fatal), but there's no reason to exclude inhibitory neurons and adenosine when "using all of one's brain at once".

Cueball has previously been confused about dark matter in [[2186: Dark Matter]].

==Transcript==
:[Ponytail is standing on a rostrum and pointing to a chart with a stick. The chart depicts a cross section of an iceberg in water, so most of it is underwater, depicted as light gray in dark gray water, but a little is above the surface, depicted in white. There are labels above and below the drawing with two small arrows pointings from above and below to the two segments of the iceberg. An off panel voice speaks from a starburst at the right edge of the panel.]
:Off panel voice: But then how did it interact with the ordinary baryonic matter in the Titanic's hull?
:Upper Label: Normal Matter
:Lower Label: Dark Matter

:[Caption below the panel:]
:My Hobby:
:Refusing to understand the iceberg metaphor

{{comic discussion}}

[[Category: Comics featuring Ponytail]]
[[Category: My Hobby]]
[[Category: Physics]]
[[Category:Public speaking]]

2785: Marble Run

2023-07-24T02:34:05Z

Scyrmion: Undo revision 318356 by 172.69.214.159 (talk)

{{comic
| number = 2785
| date = June 5, 2023
| title = Marble Run
| image = marble_run_2x.png
| imagesize = 438x512px
| noexpand = true
| titletext = I have so many plans. It would incorporate a Galton board, a Ranque-Hilsch marble vortex tube, and a compartment lined with pinball bouncers with a camera-and-servo Maxwell's Demon that separated the balls into fast and slow sides.
}}

==Explanation==
{{incomplete|Created by MAXWELL'S DEMON - Please change this comment when editing this page. Do NOT roll away this tag too soon.}}
A {{w|Rube Goldberg machine}} is a fancifully complex system (either real or imagined), which makes use of an overly elaborate chain of actions. The name comes from an American cartoonist who was one of those who became famous for depicting convoluted and outlandish processes for accomplishing simple tasks.

There's a long history of people building actual contraptions along these lines. Such devices are almost never intended for practical purposes, but exist entirely for entertainment, and as an exercise in building complex and carefully planned systems. This has become particularly common in the internet age, as videos of particularly interesting examples can gain popularity online. The most common category of these systems is probably the marble run (also known as a {{w|rolling ball sculpture}}), in which the goal of the system is to move one or more balls or marbles from the beginning of the arrangement to the end in interesting ways. This contrasts to the {{w|Domino toppling|domino run}} where motions are transferred by many intermediate pieces painstakingly arranged, although both aspects are commonly combined in such contrivances.

When [[Megan]] tries to show [[Cueball]] an example of such a video, he refuses, not because he lacks interest, but because of how he predicts it will impact him. Cueball (likely as a stand-in for [[Randall]]), has sufficiently strong interest in things like designing, building and engineering complexity that he's certain he will eventually adopt building such systems as a hobby, and that it will dominate his time and attention. Accordingly, he appears to be deliberately delaying his exposure to them so that he can continue to pursue other hobbies, with the assumption that he will eventually succumb to this one. Randall foresees the amount of time he might use if he first began trying to construct his ideas into a marble run.

Megan responds that he knows where he's going, but is taking "a really interesting and circuitous path" to get there. This draws a parallel between the type of systems he's avoiding and his approach to life more generally, which Cueball expands upon by suggesting he would do some of the things a marble typically would in a marble run.

The title text mentions specific ideas Cueball plans to incorporate into such a set-up.

A {{w|Galton board}} is a device that distributes falling balls into a {{w|normal distribution}}. Its design is similar to those used in {{w|pachinko}}-style games.

A Ranque-Hilsch {{w|Vortex tube}} is a device for separating compressed gas into hot and cold streams. While such a device isn't directly applicable to marbles, one can imagine using the principle to separate a stream of marbles based on speed.

Pinball bouncers are properly supposed to be the {{w|Pinball#Bumpers|Bumpers}} in {{w|Pinball}} machines. In Randall's marble run there will be a compartment where the walls are lined with these bumpers. Supposedly there will be many marbles on the floor of this segment of the run, which will hit these bumpers and get a kick so they will move fast and randomly around the compartment, which is where the Demon comes in.

{{w|Maxwell's Demon}} is a thought experiment by James Clerk Maxwell which would violate the {{w|Second Law of Thermodynamics}}. Maxwell proposed that, if a container of air was separated by a divider, with a door that allowed only one molecule through at a time, and a theoretical "demon" were to control the door to sort high-energy atoms into one side and low-energy atoms into the other, the two sides would develop a temperature difference with no energy input. The problems are many: first of all, how would the door open and close without using energy; and how would the demon gain knowledge of the speed and position of all the molecules, particularly at the same time, in violation of Heisenberg's {{w|uncertainty principle}}?

Randall's version of this apparently involves the marbles bouncing around inside the bouncer-lined compartment, with an automated system to divert the fastest moving marbles into one side, and the slowest moving into the other, presumably to output higher velocity balls into one subsequent part of the arrangement, and slower ones into another. As these are macroscopic scales this would not be impossible, just really difficult.

Knowing Randall and his fans, some might design something using his ideas from this comic.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[Megan is walking towards Cueball and showing her phone. Cueball holds a hand to his face and looks away.]
:Megan: Check out this cool video of a Rube Goldberg marble run.
:Cueball: No! Not yet.

:[Megan has lowered her phone. Cueball has his hand in a fist.]
:Cueball: I've always known I'm doomed to eventually become one of those people who builds elaborate marble runs in their garage.
:Cueball: I can feel the pull.
:Cueball: So satisfying.

:[Close-up on Cueball.]
:Cueball: I just want to do as many other things as I can before I give in and disappear into that world.

:[Megan and Cueball are walking.]
:Megan: So you know where you're going to end up, but you're trying to take a really interesting and circuitous path to get there.
:Cueball: Exactly. Bounce around, maybe go off a few jumps.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Physics]]
[[Category:Statistics]]

1799: Bad Map Projection: Time Zones

2023-07-24T02:32:31Z

Scyrmion: Undo revision 318349 by 172.69.214.159 (talk)

{{comic
| number = 1799
| date = February 15, 2017
| title = Bad Map Projection: Time Zones
| image = bad_map_projection_time_zones.png
| titletext = This is probably the first projection in cartographic history that can be criticized for its disproportionate focus on Finland, Mongolia, and the Democratic Republic of the Congo.
}}
A [http://imgs.xkcd.com/comics/bad_map_projection_time_zones_2x.png double sized version] of this image can be found by clicking the image at the comic on xkcd.com.

==Explanation==
{{incomplete|[[#Table of countries and their time zones|Table]] now has all relevant countries and is sortable. But needs to be filled out for each country with explanation of its time zone and why it looks as it does on the map. (Especially those from title text needs explanation like that). Some of the info already given in the explanation could be moved to the table.}}
This is the second comic in the series of [[:Category:Bad Map Projections|Bad Map Projections]] and presents Bad map projection #79: Time Zones. It was first with this comic that it became a series. The series began a month earlier with [[1784: Bad Map Projection: Liquid Resize]] (#107). It was followed almost three years later with [[2256: Bad Map Projection: South America]] (#358).

This comic shows a {{w|Map projection|map projection}} in which countries are placed according to the {{w|Time zone|time zones}} that they fall under. It seems that [[Randall]], being Randall, runs with the idea as he has made yet another map projection that is not only inaccurate, but utterly unusable, though less so than the previous one.

The first "Liquid Resize" was #107, while this comic features #79. Since the ''liquid resize'' was purely aesthetic, whereas this one at least conveys some meaningful information it makes sense that this projection is ranked higher.

Conceptually, the series is a comment on the fact that there is no perfect way to draw a map of the world on a flat piece of paper. Each one will introduce a different type of distortion, and the best projection for a given situation is sometimes very disputed. Randall previously explored 12 different projections in [[977: Map Projections]], and expressed his disdain for some types he sees as less efficient but whose users feel superior. None of them are really good as any 2D map projection will always distort in a way the spherical reality, and a map projection that is useful for one aspect (like navigation, geographical shapes and masses visualization, etc.) will not be so for all the others. Local maps of smaller areas can be quite accurate, but the idea of both these map projection comics is to map the entire globe on a flat surface.

Time zones are based on the way the Sun shines on the Earth, so these time zones, which are based on the sun's position in the sky, would best be divided by roughly longitudinal (North-to-South Pole) lines. However, this is not the case in practice, as the defined time zones tend to have very jagged boundaries, and furthermore some countries use a completely different time than the zones they are in, at least for some parts (see {{w|China}}). Since Randall knows he cannot fix the boundaries of the time zones, he instead "fixes" the world by making a map appear to match up with the time zone system, as shown in [http://www.explainxkcd.com/wiki/images/1/1f/1799_Map_with_Labeled_time_zones.PNG this map], also posted in the [[#Map with Labeled time zones|trivia]]. This results in bizarre distortions such as the large, gum-like strands of {{w|Greenland}} (these are the towns of {{w|Danmarkshavn}} (UTC) and {{w|Ittoqqortoormiit}} (UTC-1), which use different time zones to the rest of the island) and three enormous gulfs in {{w|Russia}} (some time zones in Russia are only used in southern areas, leaving two-hour differences between some adjacent areas on the country's northern border). See also [http://www.explainxkcd.com/wiki/images/5/5b/1799_overlay.png this map] with a [[#Time zone map overlayed the comic|time zone map overlayed the comic]].

The effect of this map is to "punish" large countries with a single time zone - for instance, China, which uses UTC+8 across the whole country - and countries that share large time zones - for instance, almost all of {{w|Europe}} is packed into the Central European UTC+1 zone - by shrinking these down. Conversely, countries that use multiple time zones without filling them out are stretched out - for example, the {{w|Democratic Republic of the Congo}} (DRC) and {{w|Mongolia}}, as pointed out in the title text - as are slim countries that do not fill out the full width of their time zones but where their neighbors use different timezones so they have to fill the entire width of their time zone. For instance {{w|Finland}} (also mentioned in the title text) and the {{w|Baltic countries}}, who look huge because their western and eastern neighbors do not use the UTC+2 Eastern Europe time, and thus have to fill out the distance between the countries that are pushed to the zones on their east/west borders.

Other map projections distort countries this way as well, but based on their actual physical location as opposed to their position on imaginary time zones. The {{w|Mercator projection}} is infamous for distorting Greenland in this way, to the point that it appears to be larger than {{w|Africa}} despite being nowhere near the same size.

See the [[#Table of countries and their time zones|table]] below for lots more information on the comic, but here are some further details.

===Map imperfections===
The map is imperfect for several reasons:

Randall attempts to preserve adjacency where possible - for instance, Chad and Sudan are neighbors even though Chad uses West Africa Time (UTC+1) and Sudan uses East Africa Time (UTC+3). Randall draws an extremely thin strand connecting the countries through Central/South Africa Time (UTC+2), even though no part of Chad or Sudan uses this time. Similarly, a thin strand of Kazakhstan and Turkmenistan is shown projecting into the UTC+4 time zone in order to separate Russia and Iran, which do not really share a border. Worst of all is China, which has to have borders to several countries that do not share the single eastern time zone of east China, which the whole China is forced to use. A thin strand, resembling the {{w|Yangtze}} river, is shown passing through time zones that China does not use. This is the most complicated preservation of adjacency shown in the map.

There is no mention of daylight saving time - all countries shown are given the base winter time. Depending on the time of year, countries will shift around - around June, many northern hemisphere countries will move east, while some southern hemisphere countries will move east around December.

The map doesn't allow for half-hour time zones. (India, for instance, is on UTC+5.5) Instead, countries that use fractional time zones are shifted so they straddle the two time zones, and are then marked with an asterisk (*). This is also true of regions within countries, including the island of Newfoundland in Canada and a section in the center of Australia.

The only extra detail mentioned in the map is also for Australia. It is the {{w|UTC%2B08:45|UTC+8:45}} time zone that is used only by 5 roadhouses covering a population of only a few hundred people.

There are several errors in the map, see [[#Errors|below]].

===Table of countries and their time zones===
This sortable table includes all countries shown in the map, not just those are labeled, as well as the continents and some other regions are mentioned.

The countries or continents are mentioned approximately in reading order. If a country is not labeled with full name the abbreviation is in brackets behind the name. If the country is not labeled, labeled wrong or not even shown in the comic, there is a note after the name. Countries labeled with a footnote by an asterisk (*) are shown together with that asterisk at the name.

If a country has more than one time zone all are listed.

====Table====
{| class="wikitable sortable"
! Country/Continent
! Time zone(s)
! Distortions
! Explanation
|-
| {{w|North America}} (not labeled) || UTC-9 – UTC-3:30 || || Not labeled.
|-
| {{w|Canada}} || UTC-8 – UTC-3:30 || West coast is flattened, and the east coast is stretched out. ||
*Canada has two main distortions:
** The west coast is on UTC-8 time, and shares a border with Alaska, which is UTC-9. In this map, the border is much further east than the real border and is straightened out. While the border between the Yukon Territory and Alaska is mostly straight at 141°W, the division between the time zones are at 127.5°W; and the border between British Colombia and Alaska is not straight.
** On the east coast is the island of Newfoundland at UTC-3:30, which is marked with an asterisk; in the map it is depicted more eastward due to the extra half-hour difference. Also, the southeastern tip of Labrador shares the UTC-3:30 time zone, though not marked with an asterisk, it is stretched out to line up with the island of Newfoundland.
|-
| {{w|United States}} || UTC+10, UTC+12, UTC-12 – UTC-4 || Alaska appears thinner than usual, and Texas' coast has been smushed. || Usage of time zones in U.S. territories is {{w|Time_in_the_United_States|complicated}}. The contiguous United States use times zones from UTC-5 (East Coast) to UTC-8 (West Coast), the State of {{w|Alaska}} uses UTC-9, and {{w|Puerto Rico}} uses UTC-4. These are the only parts shown on Randall's map. Other territories, not shown on the map, use the following time zones:
* {{w|United States Virgin Islands}} use UTC-4.
* {{w|Navassa Island}} and the disputed {{w|Bajo Nuevo Bank}} and {{w|Serranilla Bank}} use UTC-5.
* The State of {{w|Hawaii}}, most of the {{w|Aleutian Islands}} and {{w|Johnston Atoll}} use UTC-10.
* {{w|Jarvis Island}}, {{w|Midway Atoll}}, {{w|Palmyra Atoll}} and {{w|Kingman Reef}} all use UTC-11.
* {{w|Baker Island}} and {{w|Howland Island}} use UTC-12.
* {{w|Wake Island}} uses UTC+12.
* {{w|Guam}} and the {{w|Northern Mariana Islands}} use UTC+10.
|-
| {{w|Mexico}} || UTC-8 – UTC-5 || Guadalajara and the Yucatan Peninsula are too far east || The east coast of the Yucatan Peninsula goes as far east as the Florida Keys here - this because the state of {{w|Quintana Roo}} is the only one to use UTC-5 (equivalent to US Eastern Time).
|-
| {{w|Antilles}} (not labeled) || UTC-5 – UTC-4 || No distortion. || Not labeled.
|-
| {{w|Cuba}} || UTC-5 || No distortion. ||
|-
| {{w|Haiti}} || UTC-5 || No distortion. ||
|-
| {{w|Jamaica}} (Jam.) || UTC-5 || No distortion.||
|-
| {{w|Dominican Republic}} (D.R.) || UTC-4 ||No distortion. ||
|-
| {{w|Guadeloupe}} (not labeled) || UTC-4 ||No distortion. || Not labeled. Tentatively identified as one of four dots in the Lesser Antilles region of Randall's map.
|-
| {{w|Dominica}} (not labeled) || UTC-4 ||No distortion. || Not labeled. Tentatively identified as one of four dots in the Lesser Antilles region of Randall's map.
|-
| {{w|Martinique}} (not labeled) || UTC-4 ||No distortion. || Not labeled. Tentatively identified as one of four dots in the Lesser Antilles region of Randall's map.
|-
| {{w|Saint Lucia}} (not labeled) || UTC-4 ||No distortion. || Not labeled. Tentatively identified as one of four dots in the Lesser Antilles region of Randall's map.
|-
| {{w|Trinidad and Tobago}} (not labeled) || UTC-4 ||No distortion. || Not labeled.
|-
| {{w|Central America}} (not labeled) || UTC-6 || Squashed together ||Not labeled. Apart from Panama, all Central American countries use the same time zone. This means Panama is stretched out, while the other countries are pushed back west of Florida.
|-
| {{w|Guatemala}} (Gua.) || UTC-6 || Stretched out. ||
|-
| {{w|Belize}} (not labeled) || UTC-6 || Greatly decreased in size, represented by only a few pixels. || Not labeled.
|-
| {{w|El Salvador}} (not labeled) || UTC-6 || Greatly decreased in size, represented by only a few pixels. || Not labeled.
|-
| {{w|Honduras}} (Hon.) || UTC-6 || The left side is flattened and pushed inwards. ||
|-
| {{w|Nicaragua}} (Nic.) || UTC-6 || No distortion, other than that Lake Colcibolca is exaggerated for no apparent reason. ||
|-
| {{w|Costa Rica}} (C.R.) || UTC-6 || Flattened and decreased in size. ||
|-
| {{w|Panama}} (Pan.) || UTC-6 || Stretched out. ||
|-
| {{w|South America}} (not labeled) || UTC-5 – UTC-3 || || Not labeled.
|-
| {{w|Colombia}} || UTC-5 || Eastern border straightened ||
|-
| {{w|Venezuela}} || UTC-4 || Western boarded straightened. Country shrunk top to bottom. ||
|-
| {{w|Guyana}} || UTC-4 || Shrunk slightly top to bottom. ||
|-
| {{w|French Guiana}} (labeled Suriname) || UTC-3 || Minimal distortion || Labeled incorrectly.
|-
| {{w|Suriname}} (labeled F.G.) || UTC-3 || Minimal distortion || Labeled incorrectly.
|-
| {{w|Ecuador}} (not labeled) || UTC-6 – UTC-5 || || Not labeled. UTC-6 is used only on {{w|Galápagos Islands}} (not shown).
|-
| {{w|Peru}} || UTC-5 || Mostly intact ||
|-
| {{w|Brazil}} || UTC-5 – UTC-3 || Eastern shore shrunk in size ||
|-
| {{w|Bolivia}} || UTC-4 || Compressed shape, slight rotation ||
|-
| {{w|Paraguay}} (Par.) || UTC-4 || Country shrunken and location with respect to (new) Argentina has changed ||
|-
| {{w|Chile}} || UTC-5, UTC-3 || || UTC-5 is used only on {{w|Easter Island}} (not shown).
|-
| {{w|Argentina}} || UTC-3 || ||This is stretched out vertically to fit the entire country into the UTC-3 timezone that it uses.
|-
| {{w|Uruguay}} || UTC-3 || Minimal distortion ||
|-
| {{w|Europe}} (not labeled) || UTC-4 – UTC+4 || Compressed with the countries of central and western Europe pressed closer in east-west direction while eastern countries are stretched in all directions. Iceland is moved east. Greenland is stretched horizontally and got strange protruding peninsulas. || Not labeled. Europe uses mostly UTC+1, which causes severe distortion. Disproportionally smaller areas utilize UTC±0, UTC+2 and UTC+3. UTC-4, UTC-1 and UTC+4 are used only marginally. Greenland, even if it belongs to North America geographically, is counted here as well as it lies within the Denmark rule.

* UTC-4 is used solely in {{w|Thule Air Base}} in western Greenland.
* Only Greenland uses UTC-3, throughout most of its territory.
* UTC-2 is not used at all.
* {{w|Azores}}, being an autonomous region of Portugal, and a Greenland settlement of {{w|Ittoqqortoormiit}} observe UTC-1.
* The United Kingdom and Ireland both use UTC±0. {{w|Portugal}} is the only country in mainland Europe which uses UTC±0 as well – that's why it sticks out a bit towards the British Isles which share the time zone with Portugal. Greenland's settlement of {{w|Danmarkshavn}} uses UTC±0 as well, and {{w|Iceland}} is here, too.
* Most of Europe uses UTC+1 but these countries in reality spread over a much larger area than just one zone. This is why central and western countries are so compressed. {{w|Svalbard}} archipelago in the Arctic Ocean also belongs here.
* The eastern countries (except Belarus and the European part of Russia but not the Kaliningrad exclave) use UTC+2. These are: {{w|Finland}}, {{w|Latvia}}, {{w|Estonia}}, {{w|Lithuania}}, {{w|Belarus}}, {{w|Moldova}}, {{w|Ukraine}}, {{w|Bulgaria}}, {{w|Romania}}, {{w|Greece}} and {{w|Cyprus}}. In reality, they occupy a smaller area on the map, but on Randall's map they are stretched to fill the UTC+2 zone strip.
* Belarus, most of the European part of Russia and Crimea use UTC+3. See below for peculiarities regarding Russia and Ukraine.
* UTC+4 is used in Armenia, Azerbaijan, Georgia and some parts of Russia.

Finland looks specifically distorted, partly because in reality it borders with {{w|Norway}} on the north, and Norway uses UTC+1. On Randall's map Norway is compressed into UTC+1 strip and Finland suddenly got some coast on Barents Sea. Poland (abbreviated ''POL.'' on the map) and Belarus (''BEL'') have common border but differ by two time zones, Poland uses UTC+1 but Belarus uses UTC+3 (Moscow time). Therefore on the map they have protruding 'fingers', touching one another, squeezed between Lithuania and Latvia on the north and Ukraine on the south.

Randall got Turkey a bit wrong, however: its European part is stretched into UTC+2 zone, but in reality Turkey uses UTC+3 on its whole territory.
|-
| {{w|Greenland}}|| UTC-4 – UTC±0 || Two landmasses stretched from the rest of the country || Greenland stretches from UTC-4 to UTC±0 with most of the country being UTC-3. UTC-4 is only applicable to Thule Air Base in the southern part of the Hayes-Peninsula, while UTC-1 and UTC±0 are used in smaller areas on the east coast of Greenland. Even though UTC-2 is not used in Greenland at all, the country is depicted as a single landmass with two small strips of land connecting the UTC-1 and UTC±0 landmasses. These two strips should be considered infinitesimally thin but depicted to clarify the two areas are not separate islands but connected with the rest of Greenland.
|-
| {{w|Iceland}} || UTC±0 || No shape distortions, but different location. || Iceland, even if it geographically lies mostly within the UTC-1 time zone, uses UTC±0. It is therefore moved east on Randall's map.
|-
| {{w|Norway}} || UTC+1 || ||
|-
| {{w|Sweden}} || UTC+1 || ||
|-
| {{w|Finland}} || UTC+2 || Stretched horizontally because it borders Norway on the north, which uses UTC+1. ||
|-
| {{w|Ireland}} || UTC±0 || None. || Ireland uses UTC±0 as the rest of British Isles.
|-
| {{w|United Kingdom}} (UK) || UTC±0 || None. || The country is fully within the single time zone used for the country. UK defined the time zones so their time zone is by definition the one with UTC±0 (or GMT).
|-
| {{w|Denmark}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Lithuania}} || UTC+2 || ||
|-
| {{w|Latvia}} || UTC+2 || ||
|-
| {{w|Estonia}} || UTC+2 || ||
|-
| {{w|Belarus}} (Bel.) || UTC+3 || || Belarus lies entirely in the UTC+3 time zone yet the map depicts a small strip of land in the UTC+2 zone. This is most likely to allow for Belarus to have a common border with Poland even though the countries do not have two consecutive time zones (Poland uses UTC+1)
|-
| {{w|Russia}} (First label) || UTC+2 – UTC+12 || || See Asia section for explanation. It is the only country labeled twice.
|-
| {{w|Netherlands}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Belgium}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Germany}} (Ger.) || UTC+1 || ||
|-
| {{w|Poland}} (Pol.) || UTC+1 || ||
|-
| {{w|Ukraine}} || UTC+2 (UTC+3 in disputed regions) || Crimea stretched away from the rest of the country. || Since the {{w|annexation of Crimea by the Russian Federation}}, the peninsula has used Moscow time (UTC+3). The sovereignty of Crimea is disputed, but it is currently ''de facto'' controlled by Russia, and Randall colors it like Russia. Two breakaway provinces in the east, Donetsk and Luhansk, also use Moscow time. These are not shown.
|-
| {{w|France}} || UTC+1 || ||
|-
| {{w|Switzerland}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Austria}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Czech Republic}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Slovakia}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Slovenia}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Hungary}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Italy}} (It.) || UTC+1 || ||
|-
| {{w|Romania}} || UTC+2 || ||
|-
| {{w|Moldova}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Portugal}} || UTC±0 || ||
|-
| {{w|Spain}} || UTC+1 || ||
|-
| {{w|Croatia}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Bosnia and Herzegovina}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Serbia}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Montenegro}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Albania}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Macedonia}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Bulgaria}} || UTC+2 || ||
|-
| {{w|Greece}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Cyprus}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Georgia}} (not labeled) || UTC+4 || Squashed into thin horizontal strip. Merged with Azerbaijan. || Not labeled. Georgia uses UTC+4 but has coast on the {{w|Black Sea}} which on Randall's map is shown entirely within UTC+2 and UTC+3 zones. Therefore Georgia is depicted as a thin strip touching the Black Sea squashed between Russia and Turkey and the main part is shown as a slightly wider blob in the east supposedly lying in the UTC+4 strip. However in the process Georgia got some coast on the {{w|Caspian Sea}} in the place {{w|Azerbaijan}} shall be located, including the {{w|Absheron Peninsula}} with the Azerbaijani capital, {{w|Baku}}.
|-
| {{w|Azerbaijan}} (not labeled) || UTC+4 || Heavily shrunk, displaced south. || Not labeled. Most or all of the Azerbaijani territory including its capital area is mistakenly attributed to Georgia, see above. In reality, Azerbaijan is the only country with coast on the Caspian Sea between Russia and Iran. However, in the Randall's map there are two tiny patches touching the Caspian Sea just north of Iran. The northern one can be tentatively identified as Azerbaijan.
|-
| {{w|Armenia}} (not labeled) || UTC+4 || Displaced east to Caspian Sea coast. || Not labeled. A tiny patch of land on the Caspian Sea coast just north of Iran can be tentatively identified as Armenia. However, Armenia ia a landlocked country in reality.
|-
| {{w|Africa}} (not labeled) || UTC±0 – UTC+3 ||Compressed in the northwest and along the southeast coast. || Not labeled.
|-
| {{w|Western Sahara}} (labeled Morocco) || UTC±0 || || Labeled incorrectly.
|-
| {{w|Tunisia}} || UTC+1 || ||
|-
| {{w|Morocco}} (labeled W.S.) || UTC±0 || || Labeled incorrectly.
|-
| {{w|Algeria}} || UTC+1 || ||
|-
| {{w|Mauritania}} || UTC±0 || ||
|-
| {{w|Senegal}} (Sen.) || UTC±0 || ||
|-
| {{w|Gambia}} (not labeled) || UTC±0 || || Not labeled.
|-
| {{w|Mali}} || UTC±0 || ||
|-
| {{w|Niger}} || UTC+1 || Slightly compressed in the west||
|-
| {{w|Libya}} || UTC+2 || Stretched vertically | Nations located to the south of Libya tend to use either UTC+1 (Chad) or UTC+3 (Sudan), but not UTC+2, which Libya uses. In order to fill in this area, Libya, one of the few countries in the area which uses the intermediate UTC+2, has been used to demonstrate the two-hour gap. ||
|-
| {{w|Egypt}} || UTC+2 || Stretched vertically | Egypt uses the UTC+2 time zone, while most countries located to its south use UTC+3. Since the area of central Africa using UTC+2 is small compared to the section using UTC+3, those countries in UTC+2 are extended to cover more of that time zone. ||
|-
| {{w|Sudan}} || UTC+3 || Sudan and South Sudan (S.S.) are fully in UTC+3 zone, but in the map a little part of them has been stretched to meet the borders with Chad the Central African Republic which are in UTC+1. ||
|-
| {{w|South Sudan}} (S.S.) || UTC+3 || || See Sudan’s explanation.
|-
| {{w|Eritrea}} (not labeled) || UTC+3 || || Not labeled.
|-
| {{w|Guinea-Bissau}} (GB.) || UTC±0 || ||
|-
| {{w|Guinea}} (Guin.) || UTC±0 || ||
|-
| {{w|Burkina Faso}} (B.F.) || UTC±0 || ||
|-
| {{w|Sierra Leone}} (S.L.) || UTC±0 || ||
|-
| {{w|Liberia}} || UTC±0 || ||
|-
| {{w|Côte d'Ivoire}} || UTC±0 || ||
|-
| {{w|Ghana}} || UTC±0 || ||
|-
| {{w|Togo}} (not labeled) || UTC±0 || || Not labeled.
|-
| {{w|Benin}} (not labeled) || UTC+1 || || Not labeled.
|-
| {{w|Nigeria}} || UTC+1 || ||
|-
| {{w|Chad}} || UTC+1 || ||
|-
| {{w|Cameroon}} (Cam.) || UTC+1 || ||
|-
| {{w|Central African Republic}} (C.A.R.) || UTC+1 || Displaced to the southwest. It is also extended to retain its border with South Sudan despite being two timezones apart.||
|-
| {{w|Ethiopia}} || UTC+3 || Compressed horizontally.||
|-
| {{w|Somalia}} || UTC+3 || ||
|-
| {{w|Equatorial Guinea}} (E.G.) || UTC+1 || ||
|-
| {{w|Gabon}} || UTC+1 || ||
|-
| {{w|Republic of the Congo}} (R. of Congo) || UTC+1 || ||
|-
| {{w|Democratic Republic of the Congo}} (Dem. Rep. of the Congo) || UTC+1 || ||
|-
| {{w|Rwanda}} (not labeled) || UTC+2 || Shifted northwards.|| Not labeled.
|-
| {{w|Burundi}} (not labeled) || UTC+2 || Shifted northwards.|| Not labeled.
|-
| {{w|Uganda}} (not labeled) || UTC+3 ||Gains border with Burundi. || Not labeled.
|-
| {{w|Kenya}} || UTC+3 || Slightly horizontally compressed.||
|-
| {{w|Angola}} || UTC+1 || Eastern border straightened.||
|-
| {{w|Zambia}} || UTC+2 || Slightly stretched horizontally.||
|-
| {{w|Malawi}} (not labeled) || UTC+2 || Rotated slightly clockwise and loses border with Tanzania. || Not labeled.
|-
| {{w|Tanzania}} || UTC+3 || Horizontally compressed; loses border with Rwanda.||
|-
| {{w|Namibia}} || UTC+1 ||Loses Caprivi Strip to Botswana. ||
|-
| {{w|Botswana}} (Bots.) || UTC+2 || Border with Namibia simplified.||
|-
| {{w|Zimbabwe}} (Zimb.) || UTC+2 || ||
|-
| {{w|Mozambique}} || UTC+2 || Horizontally compressed.||
|-
| {{w|Madagascar}} || UTC+3 || None. || Madagascar has the correct shape and position.
|-
| {{w|South Africa}} || UTC+2 || Loses some of Atlantic coast to Namibia.||
|-
| {{w|Lesotho}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Swaziland}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Asia}} (not labeled) || UTC+3 – UTC+12 || || Not labeled.
|-
| {{w|Turkey}} || UTC+3 || ||
|-
| {{w|Lebanon}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Syria}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Iraq}} || UTC+3 || ||
|-
| {{w|Iran}}* || UTC+3:30 ||Is a bit inflated in the northeast corner. ||
|-
| {{w|Israel}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Jordan}} (not labeled) || UTC+2 || || Not labeled.
|-
| {{w|Saudi Arabia}} || UTC+3 || ||
|-
| {{w|Kuwait}} (not labeled) || UTC+3 || || Not labeled.
|-
| {{w|Qatar}} (not labeled) || UTC+3 || || Not labeled.
|-
| {{w|United Arab Emirates}} (not labeled) || UTC+4 || || Not labeled.
|-
| {{w|Yemen}} || UTC+3 || ||
|-
| {{w|Oman}} || UTC+4 || ||
|-
| {{w|Russia}} (2nd label) || UTC+2 – UTC+12 || Three deep troughs almost cutting Russia into pieces, but not quite, also eastern parts stick out of proportion relative to Eastern Asian countries. || Only country with two labels. Russia has {{w|Time_in_Russia|a peculiar}} usage of time zones, therefore it is the most distorted country on Randall's map. It covers eleven time zones but uses them very unevenly. Each of {{w|Federal subjects of Russia|constituent entities}} of Russia (also called federal subjects) uses a specific time zone throughout its territory, the only exception being Yakutia, the largest administrative subdivision, which spans three time zones. The time zone assignments are quite arbitrary, however.
* UTC+2 ({{w|Kaliningrad_Time|MSK-1}}) is used in {{w|Kaliningrad Oblast}} only, an {{w|exclave}} on {{w|Baltic Sea}} between {{w|Poland}} and {{w|Lithuania}}. On Randall's map it can be seen as a small green patch north-east of Poland.
* UTC+3 ({{w|Moscow_Time|MSK+0}}) is used throughout most of the European part of Russia including Northern Caucasian republics, covering 49 constituent entities of the Russian Federation in total. These parts make up the easternmost mass of Russia on Randall's map, stretching from the {{w|Black Sea}} in the south including the area between the Black Sea and {{w|Caspian Sea}} to the {{w|White Sea|White}}, {{w|Barents Sea|Barents}} and {{w|Kara Sea|Kara}} seas in the north and includes the arctic archipelagoes of {{w|Novaya Zemlya}} and {{w|Franz Josef Land}} as seen in the upper part of the map.
* UTC+4 ({{w|Samara_Time|MSK+1}}) is used in {{w|Udmurtia}}, {{w|Astrakhan Oblast}}, {{w|Samara Oblast}}, {{w|Saratov Oblast}} and {{w|Ulyanovsk Oblast}}, forming three disjoint areas lying more or less along the Ural mountains on their western side. Astrakhan Oblast has coast on the Caspian Sea. Saratov and Samara oblasts have a common border and lie somewhat to the north-east of Astrakhan Oblast. Udmurtia lies still somewhat to the north. On Randal's map they are represented by a patch of land north-east to the Caspian Sea. Further north there's a huge 'bay' reflecting the time-gap between northern parts of Russia that use either UTC+3 or UTC+5 but not UTC+4, even if they are adjacent to each other.
* UTC+5 ({{w|Yekaterinburg_Time|MSK+2}}) is used by the administrative subdivisions lying on and close to {{w|Ural mountains}}, both on western and eastern sides of them, also covering major part of {{w|West_Siberian_Plain|Western Siberia}}. These include {{w|Bashkortostan}}, {{w|Perm Krai}}, {{w|Kurgan Oblast}}, {{w|Orenburg Oblast}}, {{w|Sverdlovsk Oblast}}, {{w|Tyumen Oblast}}, {{w|Chelyabinsk Oblast}}, {{w|Khanty-Mansi Autonomous Okrug}} and {{w|Yamalo-Nenets Autonomous Okrug}}. The lands are represented on the Randall's map by the second-from-the-left major land mass within Russia. These parts border mostly with areas utilizing either UTC+3 or UTC+7, therefore Randall has drawn huge patches of sea on both sides. In the north, one can recognize somewhat distorted shapes of the {{w|Yamal Peninsula|Yamal}} and {{w|Gydan_Peninsula|Gydan}} peninsulas.
* UTC+6 ({{w|Omsk_Time|MSK+3}}) is used solely in the {{w|Omsk Oblast}} in the southeastern {{w|Siberia}}, bordering {{w|Kazakhstan}}. On Randall's map it is shown as a strip of land joining the second and the third land mass from the left, just to the left of the ''RUSSIA'' inscription. However, taking into account the relatively small area of the Omsk Oblast, it should have been much thinner.
* UTC+7 ({{w|Krasnoyarsk_Time|MSK+4}}) is used in federal subjects located in the central and parts of eastern and western Siberia: {{w|Altai Republic}}, {{w|Tuva}} Republic, Republic of {{w|Khakassia}}, {{w|Altai Krai}}, {{w|Krasnoyarsk Krai}}, {{w|Kemerovo Oblast}}, {{w|Novosibirsk Oblast}} and {{w|Tomsk Oblast}}. These lands border mostly with areas using non-adjacent time zones, namely UTC+5 and UTC+9, and therefore form the tallest pillar on the Randall's depiction of Russia between two large seas. This part of Randall's Russia also has a strange thin strip of land going south and touching China's tendril just between Kazakhstan and {{w|Mongolia}} – this is to represent the fact that there is a short length of Russian-Chinese border there. The rest of the border is depicted elsewhere, see below. {{w|Taymyr Peninsula}} and {{w|Severnaya Zemlya}} archipelago can be seen atop that area of the map.
* UTC+8 ({{w|Irkutsk_Time|MSK+5}}) is used in {{w|Buryatia}} and {{w|Irkutsk Oblast}} only, which lie in eastern Siberia, on both sides of {{w|Lake Baikal}} (not shown on the map). This is represented by a patch located just northwest of a protruding fragment of China, which shares the time zone with these parts; however neither Buryatia nor Irkutsk Oblast border with China.
* UTC+9 ({{w|Yakutsk_Time|MSK+6}}) is used in {{w|Amur Oblast}}, {{w|Zabaykalsky Krai}} and in most of Yakutia also known as the {{w|Sakha Republic}}. On Randall's map this time zone is joined together with the remaining three eastern time zones forming a strange shape connected to the rest of Asia with a weird-looking isthmus. This is actually the part of Russia that has the longest part of the border with China along the {{w|Amur River}}, but here it is torn away because of the strange map 'projection'. {{w|New Siberian Islands}} are depicted in the far north.
* UTC+10 ({{w|Vladivostok_Time|MSK+7}}) is used in north-eastern parts of Yakutia, {{w|Jewish Autonomous Oblast}}, {{w|Khabarovsk Krai}} and {{w|Primorsky Krai}}. In reality these parts (except Yakutia) all border with China, all the way down to North Korea. On Randall's depiction they are torn away from Chinese border to represent time zone difference. The strange hook is the southernmost part of Primorsky Krai with the big haven of {{w|Vladivostok}}, the tip of the hook shall actually touch North Korea in reality.
* UTC+11 ({{w|Magadan_Time|MSK+8}}) is used in extreme north-eastern parts of Yakutia, {{w|Magadan Oblast}} and {{w|Sakhalin Oblast}}. The {{w|Sakhalin}} island is clearly recognizable in this strip of the map, but it is far removed from {{w|Japan}} which lies next to it in reality. The shape of the {{w|Sea of Okhotsk}} is somewhat recognizable, and the location of {{w|Magadan}} is clearly seen as a small hook on the shoreline near Kamchatka.
* UTC+12 ({{w|Kamchatka_Time|MSK+9}}) is used in {{w|Kamchatka Krai}} and {{w|Chukotka Autonomous Okrug}}. This is probably the least distorted part of Russia, the characteristic shapes of {{w|Kamchatka_Peninsula|Kamchatka}} and {{w|Chukchi_Peninsula|Chukchi}} peninsulas are totally recognizable.

A notable thing is that Russian railways use Moscow time (UTC+3) exclusively, all timetables are expressed in this time, even in the most remote eastern parts of Russia. You'd better know your local time zone while awaiting your train at the station.
|-
| {{w|Kazakhstan}} || UTC+5 – UTC+6 || Vertically: stretched in eastern part, squeezed in western part. Horizontally: squeezed in eastern part, stretched in western part|| UTC+5 is used in the smaller western part and UTC+6 in the larger eastern part. The division goes more or less along the 60th meridian. On Randall's map Kazakhstan's shape is heavily distorted, because in the bordering Russia only one small part, namely Omsk oblast, uses UTC+6 – therefore the eastern part of Kazakhstan is squeezed to fit. On the other hand, the western part of Kazakhstan borders with parts of Russia using as far as UTC+3, which is depicted by a long west-reaching finger. Kazakhstan has a significant part of {{w|Caspian Sea}} coast, but here it has only a tiny stretch.
|-
| {{w|Mongolia}} || UTC+7 – UTC+8 || Vertically stretched in the western half as mentioned in the Title-Text | Mongolia primarily uses the UTC+8 time zone but has some western portions using the UTC+7 time zone. Its neighbor to the south, China, is geographically located across three time zones (UTC+6-UTC+8) but by governmental decision only uses the eastern UTC+8 time zone. This choice by China has caused it to shrink towards the east on the map, requiring other countries to replace the unoccupied map area in the UTC+6 and UTC+7 time zones. Mongolia is one of very few countries using the UTC+7 time zone near China, and therefore it has been the primary recipient of the extra space generated by China's shrinking. It has occupied much of what would on an ordinary map be central Chinese territory.
|
|-
| {{w|Turkmenistan}} || UTC+5 || ||
|-
| {{w|Uzbekistan}} || UTC+5 || ||
|-
| {{w|Afghanistan}}* || UTC+4:30 || ||
|-
| {{w|Tajikistan}} (Taj.) || UTC+5 || ||
|-
| {{w|Pakistan}} || UTC+5 || ||
|-
| {{w|India}}* || UTC+5:30 || ||
|-
| {{w|Sri Lanka}} (not labeled) || UTC+5:30 || || Not labeled.
|-
| {{w|Nepal}}* || UTC+5:45 || ||
|-
| {{w|Bhutan}} (unreadable label) || UTC+6 || || Labeled unreadable.
|-
| {{w|China}} || UTC+8 || Heavily squashed horizontally, with finger-like tendrils to the west || All of China is in UTC+8 (usage of UTC+6 exists in Western Xinjiang but is unofficial). However, it reaches as far west as Tajikistan, in UTC+5, and even has an extremely short border with Afghanistan in UTC+4.5. A border is also shown with Pakistan - this is disputed by some who support India in the {{w|Kashmir conflict}}, but represents the ''de facto'' {{w|Line of Control}} between India and Pakistan.
|-
| {{w|Taiwan}} (not labeled) || UTC+8 || || Not labeled.
|-
| {{w|North Korea}}* (N.K.) || UTC+8:30 || || In the map North Korea is smushed West of South Korea because North Korea at the time of publication had a time zone that is set half an hour off from South Korea's time zone.
|-
| {{w|South Korea}} (S.K.) || UTC+9 || ||
|-
| {{w|Japan}} || UTC+9 || ||
|-
| {{w|Bangladesh}} (Ban.) || UTC+6 || ||
|-
| {{w|Myanmar|Burma}}* (Bur.) || UTC+6:30 || ||
|-
| {{w|Laos}} || UTC+7 || ||
|-
| {{w|Vietnam}} || UTC+7 || ||
|-
| {{w|Thailand}} || UTC+7 || ||
|-
| {{w|Cambodia}} (not labeled) || UTC+7 || || Not labeled.
|-
| {{w|Philippines}} || UTC+8 || ||
|-
| {{w|Oceania}}/{{w|Australia}} (not labeled) || UTC+7 – UTC+12 || || Not labeled.
|-
| {{w|Malaysia}} || UTC+8 || Malaysia and {{w|Singapore}} (not shown) stretched East from the rest of peninsular Southeast Asia || Malaysia and Singapore both switched to using UTC+8 on 1 January 1982, after using GMT+7.30 under British rule and UTC+9 during the Japanese occupation. This change was due to Malaysia wanting to standardise time between East and West Malaysia, with Malaysia choosing to use the time in East Malaysia, with Singapore following suit.
|-
| {{w|Indonesia}} || UTC+7 – UTC+9 || ||
|-
| {{w|Papua New Guinea}} || UTC+10 – UTC+11 || ||
|-
| {{w|Australia}} || UTC+8, UTC+9:30, UTC+10 || || Although the UTC+8:45 region is acknowledged by local authorities, legally the region shares the same time zone as the rest of Western Australia, UTC+8.
|-
| {{w|New Zealand}} || UTC+12 || None. || The main islands use UTC+12. There is a small archipelago under New Zealand's rule, the {{w|Chatham Islands}}, which use non-standard UTC+12:45 time, but it is too small to depict.
|}

==Transcript==
:Bad map projection #79:
:<big>Time Zones</big>
:Where each country '''''should''''' be,
:based on its time zone(s)

:[A world map is shown divided and colored by political boundaries. There are many distortions, and especially Russia looks weird. Many countries have their name listed in a gray font and at the bottom below Australia there are two specialties mentioned for time zones which are not divided in full hours. One of these is a footnote used by other countries as well.]

:[The labels are listed here in order of the "continents" as they come from top left to down right. Similarly within each continent's list the countries which are usually said to belong to a given continent (at least politically or partially, e.g. Greenland and Turkey in Europe) are listed in a similar reading order as accurately as possible.]

:[North America. (Newfoundland, the most easterly part of Canada, is labeled with a star *):]
:Canada, *, United States, Mexico, Gua., Hon., Nic., C.R., Pan., Cuba, Haiti, Jam., D.R.

:[South America:]
:Colombia, Venezuela, Guyana, F.G., Suriname, Peru, Brazil, Bolivia, Par., Chile, Argentina, Uruguay

:[Europe. (Russia is as the only country mentioned twice, the other place is over the central part in the Asia section):]
:Greenland, Iceland, Norway, Sweden, Finland, Ireland, UK, Lithuania, Latvia, Estonia, Bel., Russia, Ger., Pol., Ukraine, France, It., Romania, Portugal, Spain, Bulgaria, Turkey

:[Africa:]
:W.S., Tunisia, Morocco, Algeria, Mauritania, Sen., Mali, Niger, Libya, Egypt, Sudan, Gb., Guin., B.F., S.L., Liberia, Côte d'Ivoire, Ghana, Nigeria, Chad, Cam., C.A.R., S.S., Ethiopia, Somalia, E.G., Gabon, R. of Congo, Dem. Rep. of the Congo, Kenya, Angola, Zambia, Tanzania, Namibia, Bots., Zimb., Mozambique, Madagascar, South Africa

:[Asia. (Russia is the only country mentioned twice, the other label is within the European border. The text written over Bhutan is unreadable in the image and marked with a question mark in this list):]
:Iraq, Saudi Arabia, Yemen, Iran*, Oman, Russia, Kazakhstan, Mongolia, Turkmenistan, Uzbekistan, Afghanistan*, Taj., Pakistan, India*, Nepal*, ?, China, N.K.*, S.K., Japan, Ban., Bur.*, Laos, Vietnam, Thailand, Philippines

:[Oceania/Australia. (In Australia there is a star * in the middle of it above the name):]
:Malaysia, Indonesia, Papua New Guinea, <nowiki>*</nowiki>, Australia, New Zealand

:[Below Australia there is an arrow pointing to the south coast and below that a footnote for the stars * used above:]
:UTC+8:45
:(One small area)

:<nowiki>*</nowiki>=Half-hour offset

*'''Click''' to expand for a more detailed description:
<div class="mw-collapsible mw-collapsed leftAlign" style="width:100%">
 
:[There are no more text from the comic here below:]

:[A world map is shown divided and colored by political boundaries. Antarctica is not included. Bodies of water are white. The map is clearly distorted, with Europe and Africa in the center, but not all continents or countries look wrong. Africa, Australia and North America seem least distorted. But the bottom part of of South America is very slim, Greenland has two chewing gum like blobs stretched away from it to the right, Iceland is over the UK, and most of Europe has been compressed. Finland is too large though. In Africa especially Dem. Rep. the Congo has been enlarged. The worst distortion is in Asia, where especially Russia looks weird with three deep troughs down the length of the country and the end to the right seems to be much longer than usually. But also China is completely wrong as it has been compressed, Mongolia taking up most of its usual position.]

:[Most countries over a certain size have their name listed in a gray font. Small countries like Ireland and Haiti has their name listed in the oceans around them. Most other countries have the name inside the country, but if there is not enough room abbreviations are used. There are also a few specialties mentioned when time zones are not divided in full hours, for instance a footnote regarding time zones with a half hour offset.]
</div>
 

==Trivia==
===Errors===
* Mixing labels:
** Randall mixes up Morocco and Western Sahara (a disputed territory)
** Suriname and French Guiana also have switched labels.
*Wrong time zones:
** {{w|East Thrace}}, the European portion of Turkey, is shown in Eastern European time (UTC+2). Actually, like the rest of Turkey, it uses UTC+3.
** Nepal's time zone is UTC+5:45
** {{w|Thule Air Base}} in northwestern Greenland follows UTC-4 rather than UTC-3, and should thus be shown on a tendril to the west, directly above Labrador and the rest of Atlantic Canada; instead, it is shown using UTC-3, like most of the rest of Greenland. This is especially strange considering that Randall has correctly drawn {{w|Danmarkshaven}} as using UTC and {{w|Ittoqqortoormiit}} as using UTC-1.
* Borders and adjacency are not always preserved although often attempted as mentioned in the section on [[#Map imperfections|map imperfections]]:
** Estonia is shown sharing a border with Finland - in fact, the two countries are separated by the {{w|Gulf of Finland}}. This sea should run to {{w|St Petersburg}} in Russia - instead, the city is shown as landlocked.
** Norway should border Russia. See {{w|Norway–Russia border}}.
** Azerbaijan territory is mistakenly attributed to Georgia – Georgia should not have coast on the Caspian Sea. Armenia should not have coast on the Caspian Sea as well.
** Tajikistan should not border Kazakhstan and follows UTC+5 rather than UTC+6. These would apply to Kyrgyzstan, which is not drawn in the map; Kyrgyzstan, however, does not border Afghanistan.
** Malawi has lost its border with Tanzania.

===Omissions===
Some countries and territories are missing from the map. Most of these omissions are undoubtedly deliberate, but some are likely mistakes.

* Countries supposedly too small to show on the map's scale are omitted. These include small European countries: {{w|Andorra}}, {{w|Kosovo}}, {{w|Liechtenstein}}, {{w|Luxembourg}}, {{w|Malta}}, {{w|Monaco}}, {{w|San Marino}} and the {{w|Vatican City}}, {{w|Djibouti}} in Africa, {{w|Singapore}} in Asia.
* All the Pacific Ocean isles, including {{w|Hawaii}}.
* All Atlantic and Indian Ocean isles excluding {{w|Sri Lanka}} and {{w|Madagascar}}.
* Most of the small Caribbean countries and territories; however four small dots in the {{w|Lesser Antilles}} are depicted, but are unlabelled and cannot be definitively identified.
* Kyrgyzstan is clearly omitted by mistake.

===Map with Labeled time zones===
*[[:File:1799 Map with Labeled time zones.PNG| Here]] is a map with labeled time zones, made by a user who posted the link in the [[#Discussion|discussion]]. 

===Time zone map overlayed the comic===
*And [[:File:1799_overlay.png| here]] is an attempt that shows a {{w|time zone}} map overlayed with the comic. 

{{comic discussion}}

[[Category:Large drawings]]
[[Category:Comics with color]]
[[Category:Bad Map Projections]]

1663: Garden

2023-07-24T02:31:28Z

Scyrmion: Undo revision 318348 by 172.69.214.159 (talk)

{{comic
| number = 1663
| date = April 4, 2016
| title = Garden
| image = garden.png 
| titletext = Relax.
}}
<div class="toclimit-3">{{TOC}}</div>
*To experience the interactivity of the game, visit the {{xkcd|1663|original comic}}.

==Explanation==
{{incomplete|Fill out the [[#Items in the garden|tables]] with images of all the possible items. General explanations/comment are missing as well as link to screenshots of gardens where each item "grows".}}

This was the seventh [[:Category:April fools' comics|April fools' comic]] released by [[Randall]]. The previous fools comic was
[[1506: xkcloud]] from Wednesday April 1st 2015. The next [[1818:_Rayleigh_Scattering#No_April_Fools.27_Day_comic_in_2017|did not come out in 2017]], but first in 2018 when [[1975: Right Click]] was released on Sunday April 1st 2018.

This comics represents the April fools' comic of 2016, and it is [[Randall|Randall's]] celebration of {{w|April Fools' Day}} Friday, April 1, 2016. It represents the third time in a row that user input changes the April Fools' comic. Although in the last two [[1350: Lorenz]] and [[1506: xkcloud]] it was written (or drawn) input that became part of the comics. This time the user input is like a game, as the user actively adds, moves and deletes items, and new items appear based on these actions. In this way it actually more resembles the game comic [[1608: Hoverboard]], than the previous April Fools' comics.

Due to technical problems (or to make fools of his fans, see more about the [[#April Fools' header text|header text]] below) the comic did not go live until Sunday evening (after midnight, so technically on Monday April 4th) so there was no Friday release the week before, see [[#Monday 4th of April release|more details below]].

The comic begins with a [https://www.explainxkcd.com/wiki/images/f/f1/Garden_Loading_collage.png loading screen] with a revolving tree and the text "loading..." This is because the first time a computer loads this dynamic comic it can take a while.

Once it is loaded it displays "your '''Garden'''", being a barren landscape, with a small pond to the left, some rocks at the far left and right, and a single lamp shining light yellow light on most of the ground. This is what is shown at the top of the explanation here. But if you leave the lights on and wait (or "relax", as the reader is told to do by the title text), then plants and other items will start to appear.

The reason it is correct to call it "your garden" is that every time this comic is loaded from scratch, a new garden will be created with a unique url-address. By [[#Saving garden with url|saving this link]] (making a bookmark for it), the user will be able to return to their garden again and again. As the garden only develops very slowly this is important. (If users wish to share their garden they can do it in the table on the page for '''[[1663: Garden/Users gardens|Users gardens]]''').

[https://www.explainxkcd.com/wiki/images/7/78/1663_garden_Three_colors_over_everything_not_very_interesting.png Plants appear] one at a time, and sometimes it takes a long time. Only a few of the plants actually grow. For instance, there are some large trees that begins as [https://www.explainxkcd.com/wiki/images/2/27/1663_garden_Fast_growing_tree_-_leafless.png a large trunk] and from there [https://www.explainxkcd.com/wiki/images/6/67/1663_garden_Fast_growing_tree_-_lots_of_leaves.png grows branches and leaves]. This can sometimes happen quite fast. Most other plants just appear, the only other exception being one type of flowers. All plants, except the cactus, clearly sway in the breeze.

Also [https://www.explainxkcd.com/wiki/images/5/5a/1663_garden_Pruned_garden_with_birds_deer_gate_cactus_turtles_snake_gate.png animals] and [https://www.explainxkcd.com/wiki/images/d/de/1663_garden_Three_lamps_two_along_ground_with_pillars_not_in_blue_world_and_symmetric_gates.png building-like structures] such as [https://www.explainxkcd.com/wiki/images/1/15/1663_garden_Megan_Monolith_Animals_and_more.png a monolith and birdbaths] appear, together with lots of other items like [https://www.explainxkcd.com/wiki/images/a/ad/1663_garden_Office_space_with_star_plant_balloon_with_bird_and_grass_on_Cueball.png office furniture] with [https://xkcd.com/1663/#98dc3452-fcf2-11e5-8010-42010a8e0008 balloons swaying in the wind] or even one of the [https://www.explainxkcd.com/wiki/images/3/3f/1663_garden_One_color_Between_orange_red_and_red_First_thing_Mars_rover.png Mars rovers] which so [[:Category:Mars rovers|often have been featured]] in xkcd.

On top of all this, several known characters may appear in different poses including [[Cueball]] and [[Megan]] (for instance with a sword, see [https://www.explainxkcd.com/wiki/images/6/6b/1663_garden_Megan_with_sword%2C_trees_octopuses_with_Cueball_bunny_ducklings.png here]), [[Ponytail]] (see [https://www.explainxkcd.com/wiki/images/e/eb/1663_garden_Ponytail_and_two_Cueballs_cat_pillar_and_trunk_sE.png here]) and [[Beret Guy]] from the torso and up (see [https://www.explainxkcd.com/wiki/images/9/9b/1663_garden_Three_colors_more_separate_Beret_Guy_in_shrubbery_and_Octopus_on_office_desk.png here]). Megan and also Cueball can both be seen [https://www.explainxkcd.com/wiki/images/0/06/1663_garden_Giant_planter_on_pillars_and_both_Cueball_and_Megan_with_black_hat.png with a black hat], but it is one that "grows" on top of their heads after they first appear. However, Cueball with a black hat automatically turns into [[Black Hat]], so he can also be said to be in this comic. There is also an unknown character, a [https://www.explainxkcd.com/wiki/images/0/0c/1663_garden_One_color_Between_Light_yellow_and_yellow_First_thing_stilts.png girl on stilts] with black hair in a ponytail who like plants and balloons [https://xkcd.com/1663/#e774b4b8-fcd4-11e5-8001-42010a8e0017 sways in the wind]. A possible origin of this girl could be the What If article [https://whatif.xkcd.com/97/ Burning Pollen]. The article involves a character with seasonal allergies that is trying unsuccessfully to avoid their allergen (pollen) with giant stilts.

All the [[#Items in the garden|items that can appear]] in the garden are listed below in several tables. During the first week new items kept appearing, but after the eighth day (April 12th), no new items have appeared. Also the growth rate (and thus the fun of this comic) has decreased with time (maybe due to the enormous number of gardens that the server has to keep track of?) .

Every so often the image will refresh. You can change the number of lamps, their position, direction, beam width and the color temperature which always begins somewhere between white and yellow but can change all the way from red to blue (See this [https://www.explainxkcd.com/wiki/images/b/b8/Garden_Three_Lamp_screen_shot.png example] with one lamp selected and three colors of light). Other colors than those four may appear where two lamps' cones of different colored light overlap.

The color of light [[#Effect of light|affects the growth]] with a strong correlation for what appears in the garden depending on the [[#Colors of light|color of light]], and this is not only split between red, yellow and blue, but rather [https://www.explainxkcd.com/wiki/images/4/4a/1663_garden_Numbered_color_scale_1-17.png 10 different colors].

Early on it became clear that pure red-light results in a desert theme with [https://www.explainxkcd.com/wiki/images/9/98/1663_garden_Desert_with_red_light_only.png cacti and turtles] and pure blue light gives an aquatic theme with [https://www.explainxkcd.com/wiki/images/2/23/1663_garden_Octopus_garden_with_Cueball_hand_up_and_a_black_hat_octopus.png lots of octopuses] that may also wear a black hat. For the most interesting gardens the [https://www.explainxkcd.com/wiki/images/1/15/1663_garden_Megan_Monolith_Animals_and_more.png light colors should be mixed]; see more below under [[#Effect of light|Effect of light]].

If this comic is scientifically accurate, that correlation will be based on {{w|photosynthetically active radiation}}.

Some users manage to create fantastic gardens (by using lots of time on them, pruning them at the right time and changing the light and lamp position to get what they strive for). Especially one user have created a series of amazing gardens that is posted on another [https://forums.xkcd.com/viewtopic.php?f=7&t=114415&start=600 xkcd forum]. Here is a collection of screenshots with some of [[1663:_Garden/Screen-shots#Blitz_Girls_amazing_gardens|Blitz Girls amazing gardens]]!

The title text "Relax" can be debated. Is it to let the users know they should just sit back and relax as the garden grows.? Or should they relax and don't worry so much about how it works (not working here on explain xkcd though!)? Or is he teasing the users by giving them a garden that they need to tend to, and then telling them to relax? And also giving them many more colors than lamps... Given that this comic was supposed to come out on April 1st, there is a good chance that it is, also, to tease the users. There are actually [[#Trivia|two other title texts]] as well.

===Extra Garden pages===
*Since this comic is so complicated extra pages have been created to include much more information than is wished for on this main page (which is already of considerable size).
*These pages are listed here for convenience, but they are also linked in the relevant sections below:
**[[1663: Garden/Images]]. The images of items that can appear in the comic.
***This page is linked in the section below with table for ''[[#Items in the garden|Items in the garden]]''.
**[[1663: Garden/Screen-shots]]. Since there are no permalink, then in order to save a particular moment of a garden a screen shot is needed. These can be posted here.
***This page is linked in the section below about for ''[[#Saving images|Saving images]]''.
**[[1663: Garden/Users gardens]]. A place for users of explain xkcd to post links to their own garden, and also for experimental gardens.!
***This page is linked in the section below about for ''[[#Saving garden with url|Saving garden with url]]''.

==Transcript==
:[After a '''loading image''' with a rotating tree in the middle and the text "Loading..." with the three dots appearing one at a time, and then disappear when all three have been there the image shown above in the explanation will appear:]

:['''Description of the image above''': A piece of bare landscape is shown. At the edges there are some rocks or stones raising the level from the general level through the center of the panel. Above the middle, a little more than halfway to the top of the panel, is a light bulb sitting inside a lamp that reminds of the desk lamp from the movie Luxo Jr. The lamp shines a yellow light down on the landscape in a broad cone that jus reaches the first rock to the left, but not those to the right. The lamp just hovers in the air. In the top right corner are two gray icons. The top one has a black frame and shows an image of a lamp, tilted left as opposed to the straight position of the lamp in the image. There is a + sign below in the left corner. The second icon without a frame has a large white cross in the middle.]

:[This turns out to be a '''web applet''' and using the "+ lamp" icon two more lamps can be added getting up to three. They are all adjustable both regarding position, direction, color of light and beam width. When selecting a lamp a red circle appear around it with a small circle on top that can be used to control the light color from blue to the left to red to the right. In front is a red arrow that can turn the lamp and it can also be used to change the beam width by pulling it away from the lamp or pushing it back. The lamps can be moved by just clicking on it and moving it. The other icon with a X can be used to remove the lamps (and later any object that appear in the garden). When any object is selected there is a red circle around it. When this is done the gray cross icon becomes red and can the be used to delete the selected item. When no item is selected (either because it is deleted, or by clicking in a part of the screen with no items), then the cross icon turns gray again. When all three lamps are on, then the "+ lamp" icon is faded out.]

:['''If you wait''' (or relax, as in the title text), then a plant will grow or animals, humans and other items may appear. This could be birds, snakes, octopuses or turtles, Megan or Cueball or a birdbath, a monolith or a tall gate just as a few examples. Most of the items appear in one go, but at least the largest trees grow up with a big stem first and then adds parts later with leaves or empty branches. Also one item may appear on top of another item and for instance birds may fly in the air.]

:[There is but two words in the entire comic, which appears when you grow a sign:]
:Sign: Sale

==Functionality==
===Saving garden with url===
*There is no [[1350#Permalink|permalink button]] as in the last two years' April Fools' comics.
*The URL is different for every garden that is loaded, but stays the same. It links to a server-side copy of the scene, which then changes depending on what the users does with their gardens.
**Sharing a URL will connect a new browser to the same garden session, but only the original browser will be allowed to edit.
**The user can always return to change the garden with the link, but only from the same browser on the same computer.
**This means that a specific moment in a gardens life has to be [[#Saving images|saved as an image]] for future references.
*The garden itself will thus continue to develop further from the time when the url was copied, and events will happen from now on even though the garden is not opened in any browser.
**If the user doesn't keep it, it will become infested with weeds.
**So most likely the garden is serverside, as all browsers are allowed to see the development of this garden, but users following the url are not allowed to edit anything.
*Here is an example garden [https://www.xkcd.com/1663/#0d11a2c8-fa8f-11e5-8001-42010a8e000e linked by ID] versus the same garden:
**In the original [https://www.explainxkcd.com/wiki/images/7/7f/1663_garden_tree_turtle_birdbath.png screenshot from April 4th] from when the url was created
**In a [https://www.explainxkcd.com/wiki/images/7/7c/1663_garden_Flying_birds_deer_gate_with_cactus_turtles_snake_etc.png screenshot from April 5th] the day after.
**Here [https://www.explainxkcd.com/wiki/images/5/5a/1663_garden_Pruned_garden_with_birds_deer_gate_cactus_turtles_snake_gate.png example] after the user pruned the garden in the examples.
**Other [[1663: Garden/Users gardens|user gardens]] can be found on the link.
*Starting two browser windows or tabs pointing to the same URL will allow you to edit from either window.
**linden.xkcd.com holds all the data; the UUID just corresponds to your access key, held in your browser's local storage.

====Saving images====
*Since the [[#Saving garden with url|urls are changing]], the only way to save a particular garden is to save an image of the current garden.
**Alternatively, by deleting all lamps (or changing them to laser beams or turning them upwards) then no new growth will occur -- but then the garden will no longer develop.
*In Edge, Firefox and Chrome, the image plus light cones but minus lamps and icons elements, can be saved by right clicking in the image. (Not possible in Internet Explorer)
**They do not always save in the same way as some browsers saves the part of the background without any light cones as white, and other save it as no background, in which case it may render black, basically hiding any black items outside the light.
***For those images it depends on which viewer is used to see the image, if everything can be seen or only that in the light cones.
****See examples of how it looks with black background in these two color maps collections using [https://www.explainxkcd.com/wiki/images/5/50/1663_garden_Single_colors.png a single lamp] and [https://www.explainxkcd.com/wiki/images/9/90/1663_garden_Three_colors.png three lamps].
****See more details about how these [[1663:_Garden/Screen-shots#Color_maps|color maps]] have been made.
****See also (at least) two examples of saved images as the are here on explain xkcd [[1663:_Garden/Screen-shots#Saved_image_from_xkcd|here]].
*An image of the whole screen can be captured by pressing the PrtScn (Print Screen) key on the keyboard and then pasting the content into a blank image in an image-editing program.
**An even better solution is to use a tool like {{w|Snipping Tool}} which can take the part of the screen that are relevant. This is how most of the [[1663: Garden/Screen-shots|screen shots]] for this explanation has been acquired.
**In both ways, the lamps and icons can also be displayed, which is not an option with saved images.

===Lamps===
*Additional lamps, up to a total of three lamps, can be added by clicking the black plus lamp icon along the right of the window.
*Lamps can be removed by clicking to select a lamp, then clicking the red X icon along the right of the window, or pressing the Delete or Backspace key on the keyboard. All lights can be deleted.
*The position of the lamp can be moved by clicking and dragging the lamp within the scene.
*The angle and area of the light cone emitted by the lamp can be changed by [https://www.explainxkcd.com/wiki/images/0/09/Garden_Red_Lamp_screen_shot.png clicking to select the lamp and to reveal the red control triangle]. Rotating the control triangle around the lamp will change the aim of the lamp to point in the direction of the triangle, dragging the control triangle towards the lamp will [https://www.explainxkcd.com/wiki/images/c/cc/1663_garden_One_color_Light_blue.png widen the beam], and dragging the control triangle towards away from the lamp will [https://www.explainxkcd.com/wiki/images/5/5a/1663_garden_Pruned_garden_with_birds_deer_gate_cactus_turtles_snake_gate.png narrow the beam].
*The color emitted by the lamp can be changed by clicking the lamp to reveal the colored control dot, and by rotating the dot around the lamp. The small color control circle changes color to match the color of the lamps beam of light. new lights default to a center position, emitting a pale green. '''rotating the control right''' changes the color to yellow, orange, and finally red, and '''rotating the control left''' changes the color to white, then blue.

===Colors of light===
*The color control moves in a smooth gradient between colors, along the spectrum without any set positions.
*Small changes in the color can have an effect on the garden, even though there is no clear change in the color.
*[https://www.explainxkcd.com/wiki/images/5/50/1663_garden_Single_colors.png As many as nine colors] can be identified from the emitted light of a single lamp, and many more colors are evident when [https://www.explainxkcd.com/wiki/images/9/90/1663_garden_Three_colors.png two or three lamps overlap].
*There is reason to believe that even half the change will create different gardens, i.e. there can be at least one more position between those nine settings that will change the effect, giving eight more settings for a total of 17 "different" colors. An experiment with such '''17 settings''' for just [[1663:_Garden/Screen-shots#One_lamp_one_color|One lamp with one color]].
*Several unique elements only seem to appear using the eight half-colors. Both the [https://www.explainxkcd.com/wiki/images/3/3f/1663_garden_One_color_Between_orange_red_and_red_First_thing_Mars_rover.png Mars rover] and the [https://www.explainxkcd.com/wiki/images/1/1b/1663_garden_One_color_Between_Light_yellow_and_yellow_First_thing_stilts_right.png Stilts girl] might be missed.
*Colors can thus be indicated from these 17 divisions: 
**Below is a table with these 17 division shown and what to expect.
**This may change over time, but was as it about a week after release.
***If updating, please make a note that this may have only applied during the first week(s) and add new feature without deleting.
**There has been an [[1663:_Garden/Screen-shots#One_lamp_one_color|experiment made]] with these 17 colors, see that for more details.
***The color names links to these experimental gardens, that will never be changed after the initiation.
***But there are reasons to believe that two gardens made identical may develop quite differently, as it seems some gardens have very limited growth in spite of the same light. Some of these gardens may be of that persuasion.
****This was proven when 34 more gardens using the 17 colors where started in a [[1663:_Garden/Screen-shots#Second_experiment|similar experiment]].
*The debugger reveals that each light has a "temp" property which ranges from 0 (red) to 1 (blue). The default setting is 0.5.
**The RGB color corresponding to "temp" is determined by this function in linden.js:
::<tt>function u(t){return.32>t?[1,.5+.5*t/.32,.5]:.64>t?[1,1,.5+.5*(t-.32)/.32]:[.75+.25*(1-t)/.36,.75+.25*(1-t)/.36,1]}</tt>
[[File:1663 garden Numbered color scale 1-17.png]] 
{| class="wikitable"
! #
! Color
! Description of items etc
|-
| 1
| [https://xkcd.com/1663/#f65c4906-fcf1-11e5-8001-42010a8e0016 Blue]
| '''Pure blue'''! Aquatic theme with octopus (some with black hat), Cueball checking for rain with hand up, Ponytail pointing to the left, Megan with net (possibly only if combined with light-yellow light), office desks & chairs. Less growth after the first week and octopus only over the pond (see [[1663:_Garden/Screen-shots#Growth_speed_vs_blue_light|growth speed vs blue light]]).
|-
| 2
| [https://xkcd.com/1663/#d5b7fed6-fd94-11e5-8001-42010a8e000a Blue -> light blue]
| Octopus over pond and boats in pond, Cueball hands up and down (the latter possibly with black hat), {{w|Cairn}}s of '''stones''' and {{w|obelisk}}.
|-
| 3
| [https://xkcd.com/1663/#3afb7988-fcf2-11e5-8001-42010a8e0019 Light blue]
| Cueball hands down (but can be with [https://www.explainxkcd.com/wiki/images/6/64/1663_garden_Color_03_8d.png hand up] as well), Cairns of '''stones''', obelisk, wading bird and boats.
|-
| 4
| [https://xkcd.com/1663/#303c341c-fd95-11e5-8001-42010a8e0016 Light blue -> blue white]
| Obelisk, flower base and stems and balloon string with normal and huge balloons, Cueball hands up (and [https://www.explainxkcd.com/wiki/images/a/a5/1663_garden_Color_04_2_8d.png also down] with {{w|column}} and wadding bird), fish, shark fins and boats.
|-
| 5
| [https://xkcd.com/1663/#98dc3452-fcf2-11e5-8010-42010a8e0008 Blue white]
| Office landscape with desks and chairs, table, column, obelisk, pots with star plant or other flowers base and stems, Beret Guy in pond, Cueball hands up and down, balloon string with normal and huge balloons drifting far left and right on their strings in the wind. [https://www.explainxkcd.com/wiki/images/a/ac/1663_garden_Color_05_8d.png Also wadding bird], boats and shark fin
|-
| 6
| [https://xkcd.com/1663/#5a45a1f8-fd95-11e5-8001-42010a8e000e Blue white -> white]
| Both kinds of Cueball, Ponytail, Beret Guy, both types of cats, office desk, table, standing bird, wading bird, heron, owl, shark fin, bunny boat, flowers base and stems, balloon string with normal and huge balloons. Also [https://www.explainxkcd.com/wiki/images/3/36/1663_garden_Color_06_2_8d.png fish] and [https://www.explainxkcd.com/wiki/images/7/75/1663_garden_Color_06_8d.png flying fish].
|-
| 7
| [https://xkcd.com/1663/#ba6b4ac2-fcf2-11e5-8001-42010a8e0019 White]
| Balloon string with normal and huge balloons (here '''three in one garden'''), Megan hand up, cats, bunnies, shark fin, fish, Beret Guy, flowers base and stems and trees. [https://www.explainxkcd.com/wiki/images/c/c7/1663_garden_Color_07_8d.png Also] platform in tree, beehive base, Ponytail, water bird and flying fish and [https://www.explainxkcd.com/wiki/images/8/82/1663_garden_Color_07_2_8d.png Heron].
|-
| 8
| [https://xkcd.com/1663/#8874be6a-fd95-11e5-8001-42010a8e0016 White -> light yellow]
| Megan hands up, {{w|shrub}}s, flowers base stems, '''hilt''' and '''some blooms''', trees, bunnies, fish, shark fin, water bird, owl, bunnies. [https://www.explainxkcd.com/wiki/images/2/2a/1663_garden_Color_08_2_8d.png Also] birdbath and stilt girl.
|-
| 9
| [https://xkcd.com/1663/#db338968-fcf2-11e5-8001-42010a8e0016 Light yellow]
| '''Starting color'''. Megan hands down and with sword on platform, Megan with net (possibly only if combined with pure blue light), trees, shrub, flowers base and stems, grass, platform in tree, birdbath, ducks, wading bird, pots, with star plants, tall platform. [https://www.explainxkcd.com/wiki/images/c/c3/1663_garden_Color_09_8d.png Also] deer, stilt girl, fish and [https://www.explainxkcd.com/wiki/images/1/1f/1663_garden_Color_09_2_8d.png shark fin].
|-
| 10
| [https://xkcd.com/1663/#b28f8522-fd95-11e5-8001-42010a8e0013 Light yellow -> Yellow]
| Girl on stilts, Megan with swords on platform, trees, flowers base and stems, grass, reeds in pond, platform in trees, tall platforms, deer, snake, pots
|-
| 11
| [https://xkcd.com/1663/#efccf292-fcf2-11e5-8010-42010a8e0003 Yellow]
| Sale signs, tall platform, snakes, armadillo, flowers base and stems, reeds in pond. Also [https://www.explainxkcd.com/wiki/images/c/ce/1663_garden_Color_11_2_8d.png deer].
|-
| 12
| [https://xkcd.com/1663/#de4fd3b0-fd95-11e5-8001-42010a8e0011 Yellow -> Orange]
| Sale signs, snakes, turtles, tulips and wavy plants. Also [https://www.explainxkcd.com/wiki/images/b/bb/1663_garden_Color_12_2_8d.png tall platform] and armadillo.
|-
| 13
| [https://xkcd.com/1663/#0d6bca62-fcf3-11e5-8019-42010a8e0005 Orange]
| Wavy plants, turtles, [[#Linsang_-_cat_like_animal|linsang]], flying birds and flying Megan (and thus also bird risers and their roots). Also [https://www.explainxkcd.com/wiki/images/9/98/1663_garden_Color_13_8d.png armadillos].
|-
| 14
| [https://xkcd.com/1663/#578b80bc-fd96-11e5-8001-42010a8e000a Orange -> orange red]
| Snakes, turtles, linsang, armadillo, tulips wavy plants, flying birds and flying Megan (and thus also bird risers and their roots).
|-
| 15
| [https://xkcd.com/1663/#28b238b0-fcf3-11e5-8001-42010a8e0018 Orange red]
| Desert landscape with turtles, cactus sale, signs, lamp post poles without lamps, platform on cactus resulting in inverted pyramids. Also [https://www.explainxkcd.com/wiki/images/d/d4/1663_garden_Color_15_2_8d.png linsang].
|-
| 16
| [https://xkcd.com/1663/#ad7ca596-fd96-11e5-8020-42010a8e0006 Orange red -> red]
| Desert landscape with Mars rover, turtles, cactus sale, signs, lamp post poles without lamps but no platforms. Also [https://www.explainxkcd.com/wiki/images/e/e3/1663_garden_Color_16_2_8d.png linsang].
|-
| 17
| [https://xkcd.com/1663/#46cc4e08-fcf3-11e5-8001-42010a8e0013 Red]
| '''Pure red'''! Desert landscape with turtles and cactus only.
|}

===Effect of light===
*How much the color affects the growth took some time to find out but already from the start it was clear that there definitely was a correlation
*For instance areas under lights set to the the outer position or the starting position was very different.
**[https://www.explainxkcd.com/wiki/images/2/23/1663_garden_Octopus_garden_with_Cueball_hand_up_and_a_black_hat_octopus.png Pure blue light] (left most) develop into a boring aquatic theme with only lots of octopuses (maybe with a black hat) and the Cueball holding a hand out to check for rain.
***The appearance of pure blue gardens have changed with time so octopuses now only appear over the pond [https://www.explainxkcd.com/wiki/images/1/1d/1663_garden_One_color_Blue_9d.png like this].
**[https://www.explainxkcd.com/wiki/images/7/70/1663_garden_One_color_red_9d.png Pure red light] (far right) develop into a boring desert theme with only cactus and turtles.
**[https://www.explainxkcd.com/wiki/images/9/9c/1663_garden_One_color_Light_yellow_9d.png Light yellow] or [https://www.explainxkcd.com/wiki/images/2/2e/1663_garden_Color_09_3d.png starting light] grows lots of plants like trees, grass and scrubs and several animals like ducks, deer, fish and wadding bird and also birdbath, stilt girl and both standing Megan and sword Megan.
*Soon after the release of the comic some research into a single lamp with unchaining light, that covering the whole light range split into 17 divisions was undertaken.
*[[File:1663 garden Numbered color scale 1-17.png]]
**See these gardens [[1663:_Garden/Users_gardens#Locked_gardens_only_for_explanation_use|locked for explanation use only]] and also see more about the 17 split in the color range [[#Colors of light|above]].
*Mixed light seems to be able to do the same, but it is unclear if what grows only depends on the final mixed color, or if it is a mix of what would grow under those two colors.
**There are some indications that it is not a clear mix as pure blue together with pure red, does not seem to produce neither Octopuses or desert theme.
**If there are any items that can only grow under a mix of light this has not been proven. Most objects that can grow directly from the ground, has been observed in the experimental single color gardens mentioned above.
**But there may be items that needs to grow on top of other objects, and these may require a change of color from what the base needs. And thus they will not appear under one color light. Possible examples of these items could be:
***[https://www.explainxkcd.com/wiki/images/f/f3/Garden_Desk_lamp.png Desk lamp] (needing some kind of platform forming in another color range like the [https://www.explainxkcd.com/wiki/images/e/ee/Garden_Tall_platform.png tall platform], yellow or the small [https://www.explainxkcd.com/wiki/images/1/11/Garden_Platform_1.png platform], orange).
***[https://www.explainxkcd.com/wiki/images/8/88/Garden_Giant_Planter.png Giant Planter] (needing for instance a [https://www.explainxkcd.com/wiki/images/c/c4/Garden_PlatformColumn_3.png platform column], light blue light]
***[https://www.explainxkcd.com/wiki/images/e/e0/Garden_lamp-topper.png Lamp pole tops] (needing [https://www.explainxkcd.com/wiki/images/8/81/Garden_Lamppost_1.png lamp poles] forming under orange light)
***[https://www.explainxkcd.com/wiki/images/a/a4/Garden_Flower_bloom_1.png Flower blooms] (any type) (needing [https://www.explainxkcd.com/wiki/images/d/d1/Garden_Flower_segment_1.png flower segments], several colors)
***[https://www.explainxkcd.com/wiki/images/7/7e/Garden_Actual_flying_fish_1.png Actual flying fish] (needing bird raiser, orange light)
***[https://www.explainxkcd.com/wiki/images/5/5d/Garden_Saucer.png Flying saucer] (needing bird raiser, orange light)
*What happens when using only one color (other than the two outer points red and blue and the starting light yellow color) has been explored in great depth in no less than two different [[1663:_Garden/Screen-shots#One_lamp_one_color|One lamp one color]] experiments with [[1663:_Garden/Users_gardens#Locked_gardens_only_for_explanation_use|51 gardens]] created using 17 different color settings.
**[https://www.explainxkcd.com/wiki/images/2/27/1663_garden_One_color_Between_blue_and_light_blue_6d.png Blue light] (just right of pure blue) creates a landscape with stones forming cairns, together with monoliths, both kinds of Cueballs (with black hat on the standing one) and still octopuses.
**[https://www.explainxkcd.com/wiki/images/7/75/1663_garden_One_color_Light_blue_9d.png Light blue light] (just a little farther from pure blue than above), the octopuses disappear, but the rest remains the same, although boats and wadding bird now appear in the water, and still both [https://www.explainxkcd.com/wiki/images/a/a6/1663_garden_Color_03_5d.png Cueballs] can occur. Going just slightly further away [https://www.explainxkcd.com/wiki/images/e/e4/1663_garden_Color_04_2_5d.png fish and columns] start to appear.
**[https://www.explainxkcd.com/wiki/images/d/d1/1663_garden_One_color_White_Blue_12h.png Blue white light] grow a sort of office theme, with desks, balloons and Cueballs. Moving towards white light [https://www.explainxkcd.com/wiki/images/d/d0/1663_garden_One_color_Between_Blue_White_and_White_5d.png Ponytail appears] with less office items together with cats (and now no Beret Guys in the pond but [https://www.explainxkcd.com/wiki/images/d/df/1663_garden_One_color_Between_Blue_White_and_White_8d.png lots of animals]).
**[https://www.explainxkcd.com/wiki/images/f/f7/1663_garden_One_color_White_9d.png White light] gives a forest of balloons with Megan holding her hands up.
**[https://www.explainxkcd.com/wiki/images/3/3e/1663_garden_One_color_Yellow_2d.png Yellow light] (somewhat right of the starting color) produce sale signs and snakes.
**[https://www.explainxkcd.com/wiki/images/4/4f/1663_garden_One_color_Between_orange_and_orange_red_8d.png Orange light] produce flying bird and flying Megans and on the ground snakes, turtles, linsangs and armadillos, plus tulips and wavy plants.
**[https://www.explainxkcd.com/wiki/images/0/02/1663_garden_One_color_Between_orange_red_and_red_8d.png Orange red light] (just left of red) produce lamp posts (without the top), in addition to the same desert theme as red with cactus and turtles. If it is very close to red the Mars rover appears (as in the example above). If it is a little longer from red, the platforms can form, which can then act as a catalyst for growth and create [https://www.explainxkcd.com/wiki/images/5/58/1663_garden_One_color_Orange_red_9d.png large towers] on top of cactus's.
*Nothing seems to be able to grow under several conditions:
**If no lamps are pointing towards the ground for instance because:
***All [https://xkcd.com/1663/#21374f9e-fbbd-11e5-8001-42010a8e0015 lamps are deleted].
***The [https://xkcd.com/1663/#4896b678-fbbe-11e5-8001-42010a8e0011 beam is laser thin.]
***The lamps points towards the sky without [https://www.xkcd.com/1663/#6a6a7be0-fbbe-11e5-800d-42010a8e0008 touching the ground.]
***The lamps are [https://xkcd.com/1663/#c75991f6-fbbe-11e5-8001-42010a8e0011 below the ground pointing down]. (In this case the one over the pond was not far enough down and a single water plant has formed anyway.)
****On the other hand if the lamps are below the ground but pointing up it can result in growth well enough as shown in this [https://www.explainxkcd.com/wiki/images/7/7c/1663_garden_Different_light_from_below_the_ground.png example] and this [https://www.explainxkcd.com/wiki/images/3/3a/1663_garden_Yellow_light_from_below_the_ground.png example].
**It was believed that if the lamps where very close to the ground pointing straight down there would be no growth.
***However this can be because only a very small area is illuminated
****In this [https://www.xkcd.com/1663/#9733dff4-fbbe-11e5-8001-42010a8e0012 example] there are turtles under the red light in the pond, plants under the yellow and octopus, column and Cueball under the blue (from the time that columns could appear under pure blue light).
****Similar in this [https://xkcd.com/1663/#357a48d8-fbbf-11e5-8019-42010a8e0006 example] there are octopus (in the pond), deer/plants and a cactus from even lower lamps.
****Of course the lamp has to be so high as not to be underground as mentioned above.
**Also if lamps point towards the ground there can still only grow something from the ground [https://www.explainxkcd.com/wiki/images/3/3e/1663_garden_Two_light_on_small_area_nothing_outside_the_light.png where the light touches]. The growth can move outside the light cones up in the air, but the base has to be within an area with light.
**Similar with items that can grow new things on top of them like tree trunks or platforms, this will only happen if light shines on the relevant places.
***For instance the tall tree trunks can easily grow outside a light cone. Then leaves and branches will [https://www.explainxkcd.com/wiki/images/e/e9/1663_garden_One_color_Between_Light_yellow_and_yellow_3d.png only grow below] the point where the light hits
****Similar with platform, that [https://www.explainxkcd.com/wiki/images/3/3e/1663_garden_One_color_Yellow_2d.png grows partially outside] the light cone. More items will only appear where this lamp still hits the platform.
***One exemption to the rule mentioned here seems to be the bird raisers. The bird raisers are used to hold anything that flies up in the air. And the bird raiser it self needs to grow from either another bird riser or from a bird riser root (which in the end holds all bird raisers). This root has to have light on the ground to grow and thus have light on it self. But from the top of the bird raisers growing from such a root, items are able to grow even if the tip pf the bird raiser is not in the light.
****Thus flying items can appear to grow where there has [https://www.explainxkcd.com/wiki/images/4/4f/1663_garden_One_color_Between_orange_and_orange_red_8d.png never been light]!
****See much more about this under the description of bird raisers in the [[#Helper_structures|table below]].
**Of course lights can be moved and changed without destroying what has already grown there (or so it seems). So a tended garden cannot be used to determine this.
***This is why some [[1663:_Garden/Users_gardens#Locked_gardens_only_for_explanation_use|locked gardens]] have been set up where there will be no changes ever.
***Examples from above has mainly been taken from screen shots of these locked gardens.

===Grown items===
*Grown items may be highlighted by clicking on them. Selected grown items will be highlighted with a red circle, and appear slightly lighter then other items.
*Grown items may be "pruned" by the red X icon along the right of the window, or pressing the Delete key on the keyboard.
*Some items (such as the large tree) can be deleted in minor parts by selecting a branch or smaller set of leaves without deleting the entire tree.
*See the images (with links to xkcd) of all 250 items that can appear, here below in the [[#Items_in_the_garden|tables]].

===Growth development===
*'''After a few weeks''' growth not only seems to appear when the garden is actively running in a browser window (maybe only in the original users browser?)
*There continued to appear new items that was not available on the release day.
**This lasted about a week (maybe 8 days).
**For instance many new items and animals like the columns and the owls started to appear after a few days.
**Also tulips and lightning poles did not appear at first.
***A last burst of new animals occurred about a week after release (either 11th or 12th of April). This burst included the following animals:
***Herons, Wadding birds, Sharks fins, jumping fish and flying fish plus actual flying fish (flying without water), armadillos and no less than 12 different linsangs (see [[1663:_Garden#Linsang_-_cat_like_animal|Linsang - cat like animal]]).
*But it also seems to change what might appear, so that the result of a particular color will change dramatically, not only by adding new, but also by not growing what used to be.
**A clear example of this is that for the first half week pure blue light resulted in lots of octopuses all along the ground and also Cueballs cheeking for rain.
**Later also columns appeared.
***But after a week the growth rate under blue light almost stopped, and it seems that octopuses now only grow over the pond to the left, and much less Cueball and no columns under that color.
**See details here: [[1663:_Garden/Screen-shots#Growth_speed_vs_blue_light|Growth speed vs blue light]].

===Debug mode===
{{notice|Anyone who can explain what the debug mode is, how it works, why it is there and why there is difference between the linden and the normal xkcd?}}
*By changing the url address it is possible to get into a debug mode.
**This may not work from for internet explorer, but seems to work from Firefox and chrome.
*Normal mode: https://xkcd.com/1663/#ID
**[https://xkcd.com/1663/#98dc3452-fcf2-11e5-8010-42010a8e0008 Normal mode example].
*Debug mode works from this address https://xkcd.com/1663/?debug#ID
*https://linden.xkcd.com/?debug#ID does not work anymore.
**[https://linden.xkcd.com/?debug#98dc3452-fcf2-11e5-8010-42010a8e0008 Linden debug mode].
**In this mode each item can clearly be seen as the image is framed, and thus invisible lifter images for flying things can be seen.
***See this [https://linden.xkcd.com/?debug#d12a0932-faaa-11e5-8012-42010a8e0006 example].
**This last mode can be used to find the names of the [[1663:_Garden/Images#Images|images of each item]] in a garden.
***See this section on [[1663:_Garden/Images#How_to_find_new_links|How to find new links]].
***By preventing the browser from loading specific images (''e.g.'' with an ad blocker), all instances can be pruned temporarily.
*On the forum, [https://forums.xkcd.com/viewtopic.php?f=7&t=114415&start=600#p3959056 yan provides some jQuery] which can be entered in the javascript console to add an interactive sidebar listing the objects in the garden.

===Limitations===
*The beam produced by each lamp is normally restricted to spread between 0° (which results in no growth) and 95°. The "create new light" button chooses a random angle between 45° and 90°.
*Attempting to view several gardens simultaneously may cause some to hang on the "loading" image, likely due to the server refusing additional connections. The maximum number which can load successfully is usually six, but may be as low as three.

===Bugs===
*There have been several bugs mentioned already after the first day. Please include any spotted here:
**Also some problems that may now be fixed.
*May not run on some tablets or smart phones (i.e. touch-screen only devices).
*There are some browser versions of Chrome and Firefox where it doesn't run.
*The lamps may be invisible for a few seconds after loading.
*The whole page refreshes at random intervals. This has been patched.
**It still does on April 5th.
**Sometimes (in some browsers?) the garden is reloaded when refreshing.
***This may though be because of the url which is a [[#Saving garden with url|link to a given garden]].
***See examples of this [[1663: Garden/Users gardens|here]].
***Seems to be dependent on the browser type.
*Some lamps jumped back to their starting position after a few minutes, without the whole page reloading.
*For a few hours after its apparition, the loading didn't seem to stop for some people, making them think that the rotating tree was the whole joke, with people expected to "relax" while looking at it.
*Occasionally invisible objects are added. They can be deleted, and they have bounding boxes in the [[#Debug mode|debugger]]: [https://linden.xkcd.com/?debug#d12a0932-faaa-11e5-8012-42010a8e0006 Example].
*Doesn't work over https, you have to use http instead.
*It is possible to save the image in Chrome and in Firefox, but not in Explorer.
**It is possible to save the visible portion of the image (in any browser) by pressing the Print-Screen key to perform a screen capture.
**But in Chrome the image is black where there is no light.
**In Firefox everything is visible, wth the light cones (in color) shown.
*Appears to have a memory leak at least in some Windows/Firefox versions, as keeping the page open for a long time will cause Windows to kill Firefox for insufficient memory.
**On the forum, Weeks tries to summon davean! [https://forums.xkcd.com/viewtopic.php?f=7&t=114415&start=320#p3951923]
*Does not work in many Linux versions.
*Tree trunks will sometimes grow endlessly without leaves depending on the lights hitting them.
*If you are dragging a light, the arrow, or the color slider when a refresh happens, the refresh will enter an infinite loop.
**This seems to cause corruption of the garden because refreshing the whole page will result in a loop that never loads the page.
**Clearing your local data for xkcd.com solves the issue but also makes you unable to edit your garden.
*On April 6, gardens viewed from [https://xkcd.com/1663/#7877bdfc-fc03-11e5-8001-42010a8e000c https://xkcd.com/1663/] links began to include double-size objects, while they appeared <s>normally</s> with different objects enlarged when viewed from [https://linden.xkcd.com/#7877bdfc-fc03-11e5-8001-42010a8e000c https://linden.xkcd.com/].
**Apparently some of the server's art files were <s>misdirected to the larger versions</s> replaced with new large images. [https://web.archive.org/web/20160407054439/https://linden.xkcd.com/art/rover.png] [https://linden.xkcd.com/art/2x-rover.png]
**New giant objects are still placed according to their original sizes. [https://forums.xkcd.com/viewtopic.php?f=7&t=114415&start=320#p3951908]
**This was suddenly fixed on April 7, possibly inducing browser memory issues at that time. [https://forums.xkcd.com/viewtopic.php?f=7&t=114415&start=360#p3952207]
***However, some giant images remained cached (where?) for a long time. [https://forums.xkcd.com/viewtopic.php?f=7&t=114415&start=400#p3952527]
*Although there are six bee images, they have not been reported in any gardens[[File:Garden_Bee_1.png]]

==Trivia==
*There are three different title text in this comic, as there are also one over each of the two icons.
**This is special as with some of the newest "game like comics" there are [[:Category:No title text|no title text]]!
**The normal one "Relax" is mentioned above in the main explanation.
**The other two are explanations for what the two icons in the top right corner does and appear when the cursor hovers over them.
***They are ''Create new light'' explaining that this icon introduces new lamps and
***''Remove selected (delete key)'', which explain that this icon can be used to remove (delete) selected items like lamps, plants or items. It also explains that the delete key can be used instead of the icon.

===Linsang - cat like animal===
*In the second week of release no less than 12 [https://www.explainxkcd.com/wiki/images/3/38/Garden_Linsang_1.png images] of the animal called {{w|linsang}} appeared [https://www.explainxkcd.com/wiki/images/1/1d/1663_garden_My_first_linsang_cat_like_creature_in_SC.png in the garden].
**See all of them [[1663:_Garden/Images#Images|here]].
*This animal was referenced in ''[[Thing Explainer]]'' in ''Tree of life'' where the animal is drawn in the ''cat-shaped'' section with the following caption:
::'''Almost cat'''
::This animal looks like a cat with a long neck. It's the closest thing to a cat that's not actually in the cat family.
::*Next to the section another one is drawn in front of Cueball (obvsiously it's Randall).
::*The linsang says "Mrowl?" and Cueball says "I wan't one!"
*Randall has in an interview discussed these [https://www.wsj.com/articles/randall-munroe-creator-of-xkcd-on-google-search-tricks-and-cat-like-creature-videos-1447945313 Cat-Like-Creatures] and in is quoted for saying
::Q: '''An animal I’m obsessed with is:'''
::A: The linsang, which looks almost like a cat but has this weird long neck. I find them both unnerving and adorable. I found some footage of one running; it’s like watching a cat video from a parallel universe.
::*The linsang is related to the animal {{w|Genet (animal)|genet}}, and here are two videos/photos of a genet running:
::**[https://www.youtube.com/watch?v=mRdJSVlPrGo Genet on a rhino]
::**[https://www.youtube.com/watch?v=Ehq3ssg7zwk Genet on other things]

===Monday 4th of April release===
*Due to technical problems (or to make [[#April Fools' header text|fools of his fans?]]) the comic did not go live until Sunday evening (after midnight, so technically first on '''Monday April 4th''').
**There was thus no Friday release in the week before
**So the Wednesday comic [[1662: Jack and Jill]] got a lot more attention than it would usually have had.
*This comic thus turned in to the Monday release instead, as no other comic was released later that Monday, as this would have taken attention away from this very special comic.
**But it was called the ''April 1st comic'' and later the ''Friday comic'' in the [[#April Fools' header text|header text]] displayed at the top of xkcd to explain why there was no Friday comic.
***A header text continued to stay a the top but changed two more times until the release past midnight Sunday in the US. It was even past midnight {{w|Pacific Time}}, but not yet on Hawaii.
**There were thus only two comics released in the week before this Monday, which may be the first time since xkcd went live on {{xkcd||xkcd.com}} in 2006.

===April Fools' header text===
*There is some debate as to whether this comic is an April Fools' comic or not.
**Was instead the April fools' joke the text written above the comic in the header of xkcd?
**There is reason to believe this was [[#April Fools' comic|not the case]] based on among other thing these [[header text]], see also [[header_text#2016-04-01_-_April_1st_comic_-_technical_difficulties|here]].
*Below it a list of the different header text displayed from Friday until the comic was just released.
**The header text continued to change regularly [[#Header text after release|after release]] in regard to this comic at least until next Friday (April 8th).
**Here below is the different header text with info on when it appeared.
***Links are given when possible to a [[1663:_Garden/Screen-shots#Screen-shots_of_header_text|screen shots]] on the word ''message'' and to a webarchive in another link when both are available.
*On Friday, April 1st, 2016, the xkcd website changed to a new [https://www.explainxkcd.com/wiki/images/8/81/1663_garden_April_1st_comic_is_currently_experiencing_technical_difficulties.png message] where the standard message "XKCD updates every Monday, Wednesday, and Friday." usually is. (This [https://www.explainxkcd.com/wiki/images/6/69/1663_garden_Commercial_header_text_before_April_1st_problems.png message] had, however, up to this point and for a long time been a [https://web.archive.org/web/20160401175527/https://www.xkcd.com/ commercial] for ''[[Thing Explainer]]''). But now it [https://web.archive.org/web/20160401204749/https://xkcd.com/ began displaying] this instead:
::The xkcd April 1st comic is currently experiencing technical difficulties.
::Please stand by!
*Early Saturday April 2nd the [https://www.explainxkcd.com/wiki/images/e/e0/1663_garden_Calendar_systems_in_which_Saturday_is_April_1st.png message] was [https://web.archive.org/web/20160402050932/https://xkcd.com updated]:
::The xkcd April 1st comic is currently experiencing technical difficulties.
::Status update: Please stand by.
::Status update: This is fine. Everything is fine.
::Status update: Everything is on fire.
::Status update: Searching for calendar systems in which Saturday is April 1st.
*Later on Saturday the [https://www.explainxkcd.com/wiki/images/0/06/1663_garden_Delayed_until_Sunday_night.png message] was again [https://web.archive.org/web/20160402175822/https://www.xkcd.com changed] to:
::The Friday xkcd comic is currently experiencing technical difficulties
::[Editor's note: Everything is on fire] and has been delayed until Sunday night.
*The comic did not come out until past midnight in the entire North America (coming out just before midnight in Hawaii).
*It was finally released very early on Monday April 4th, and the [https://www.explainxkcd.com/wiki/images/5/53/Garden_Loading_screen_shot.png message] then [https://web.archive.org/web/20160404123555/https://xkcd.com/ returned] to the [[header_text#2016-04-04_-_Return_to_standard_as_Garden_came_up|old standard text]] for xkcd for a short while:
::xkcd updates every Monday, Wednesday, and Friday.

===Header text after release===
*During April 4th, after the release the [[header_text#2016-04-04_-_Protip_on_Garden|xkcd Header text changed]] from the old standard to display a [[:Category:Protip|Protip]]:
::'''Protip:''' If you don't like how your garden is growing, you can click to prune it.
*And then later on April 4th, the [https://www.explainxkcd.com/wiki/images/a/a2/1663_garden_Protip_and_url_hint.png message] was again [https://web.archive.org/web/20160404185353/https://www.xkcd.com/#5dbfbb82-fc20-11e5-8001-42010a8e000d changed] to:
::'''Protip:''' If you don't like how your garden is growing, you can click to prune it.
::You can copy the URL to share your garden. From other browsers, it will be view-only.
*When the next comic came out, the [https://www.explainxkcd.com/wiki/images/6/61/1663_garden_Note_if_seeing_todays_comic.png message] then [https://web.archive.org/web/20160408105110/https://xkcd.com/1663/#4b04323a-fddc-11e5-8001-42010a8e0016 changed], (also for the [https://web.archive.org/web/20160406194653/https://xkcd.com/1664/ new comic]) to
::'''Protip:''' If you don't like how your garden is growing, you can click to prune it.
::You can copy the URL to share your garden. From other browsers, it will be view-only.
::Note: If you're seeing today's comic in place of your garden, change the URL from xkcd.com/#<your code> to xkcd.com/1663/#<your code>.
*[https://web.archive.org/web/20160408145017/https://xkcd.com/ After] the Friday comic came out on April 8th, the [https://www.explainxkcd.com/wiki/images/c/c5/1663_garden_Back_to_pro_tips_only_after_Friday_comic.png message] then [https://web.archive.org/web/20160408195958/https://xkcd.com/ changed] back to
::'''Protip:''' If you don't like how your garden is growing, you can click to prune it.
::You can copy the URL to share your garden. From other browsers, it will be view-only.
*The [https://www.explainxkcd.com/wiki/images/c/c6/1663_garden_Still_pro_tip_on_Friday_22nd_comic.png message stayed] like the one above at least until Friday April 22th before that Friday's comic [https://web.archive.org/web/20160422102754/https://xkcd.com/ was released]. But either at the time of release or at least on Saturday the day after the release the [https://www.explainxkcd.com/wiki/images/a/ae/1663_garden_Back_to_normal_text_after_Friday_22nd_comic.png message returned] to [https://web.archive.org/web/20160423103108/https://xkcd.com/ the original].
::XKCD updates every Monday, Wednesday, and Friday.
:*The pro tip, however, remained as [https://web.archive.org/web/20160425022201/https://www.xkcd.com/1663/ the header text] when displaying the {{xkcd|1663|Garden comic}}.

===April Fools' comic===
*This comic '''was indeed supposed to be''' the Friday 1st of April, April Fools' comic!
**This statement is based on several things, which can can be deduced from the above header text and the subsequent issues with the many [[#Bugs|bugs in this comic]].
*It is clear that this comic did actually come out as promised, at least as promised in the third message about release on Sunday night.
**It is also clear that it is regarded as the Friday comic, even in the last update before the release, which was two days after April 1st.
*It is also clear that this was a very complex comic, and it is realistic that Randall did have problems with making it work.
**On day two there still seemed to be several minor bugs, which seemed to improve over time so Randall was still working on it after release.
***But then new bugs appeared when the next comic was released.
*Both of the last two April Fools' comics, [[1350: Lorenz]] and [[1506: xkcloud]], have had no real meaning or joke in the comic. The jokes appeared from user input, and here it comes from waiting.
**This makes people who spend too much time on these comics ''April Fools''' (or if they rather wish to be called a ''nerds'' than fools, then they can claim to have been a victim of [[356: Nerd Sniping|nerd sniping]]).
**So, even if Randall ''did'' play a joke on people who [[Talk:1662: Jack and Jill#What happened to Friday's comic|eagerly awaited the comic]], then he did deliver as promised a spectacular comic Sunday night.
*There are several reasons to believe that Randall would have preferred the comic to get out on Friday April 1st.
**Apart from it being a time consuming comic that in it self is April Fools' comic material, then by getting it out Friday this special comic, which he obviously have used a lot of time to prepare, would have had one more day as the first comic.
**Getting it out before a weekend would have let many more users spend time looking at their garden. Now many would not spend enough time to appreciate the comic, as it came out right when the new work week began.
***And it is a very complicated comic that just to get to understand how to really use it could take a days time even for someone with time.
***And this is not talking about how the comic works, but just how to use the program, i.e. the whole [[#Functionality|functionality]] of the comic is way more complex than even a game like [[1608: Hoverboard]].
**And before next weekend two more comics were released taking some of the focus away from this one too soon, and also before the next weekend.
***Of course die hard fans will not forget this one, but many xkcd fans may only come by in the weekend etc. and such a hard to come by comic like this, that demands patience and that you return does not profit from being bumped down to number three as it would be next Friday.
*Randall lives of his fans goodwill and to deliberately make a pun on them like this would probably not seem like a good business proposal, apart from the fact that the comic now gets less attention than by coming out before the weekend.

==Items in the garden==
*Below in the section are several tables displaying all the known images of items that may grow (appear) in the garden.
**They have been sorted based on type like characters, animals (by type), plants (by type), platforms, others and helper structures.
**In time each item will have a link to a screen shot where they appear.
**Also explanations for each item can be written in these tables
*For colors reference refer (also) to the numbers in this image: 
*[[File:1663 garden Numbered color scale 1-17.png]]
**The color under which a given item may grow should be noted.
***Particularly if they can grow under just one color if light (maybe a range, but with only one lamp lit as one specific color).
***But almost more important if some items needs more than one color
****Especially if the items base, the base on which they have to grow, needs another color than they do, as seems to be the case with flower blooms and the lamp to go at the top of the lamp poles.
*All the images can be seen without the table here: [[1663: Garden/Images|Images of items]].
===Characters===
{| class="wikitable collapsible collapsed" |
! Characters
! Description of images
! Relevant colors
! Link to screen-shots
|-
! [[Cueball]] [[File:Garden Man 1a.png]] [https://xkcd.com/1663/art/2x-man-1a.png Man 1a] 
[[File:Garden Man 2a.png]] [https://xkcd.com/1663/art/2x-man-2a.png Man 2a]
|
*Here are the two different images of Cueball.
*The first Cueball just stands with his hands down.
**In this position he always looks left.
**Some items can grow on his head, most obviously [https://www.explainxkcd.com/wiki/images/2/27/1663_garden_One_color_Between_blue_and_light_blue_6d.png the hat], turning him into [[Black Hat]]. But also animals like the [https://www.explainxkcd.com/wiki/images/9/92/1663_garden_Blitz_Girls_UFO_and_birds_garden.png water bird], [https://www.explainxkcd.com/wiki/images/3/32/1663_garden_One_color_Between_Blue_White_and_White_6d.png standing bird or cats] and [https://www.explainxkcd.com/wiki/images/d/d4/1663_garden_Crazy_cat_peoples_garden.png owls] can perch on his head.
**He never seems to appear in pure blue light, and also only appears when the light is turned left of white.
*The second Cueball has one hand out.
**In this position he always looks right.
**He is the only character that appears under pure blue light (color 1).
**It seems like he cannot wear the hat or anything else on his head.
**Instead he can hold object on his hand, like a [https://www.explainxkcd.com/wiki/images/1/1e/1663_garden_S_shaped_empty_balloon_string_left.png balloon string] (later [https://www.explainxkcd.com/wiki/images/0/0e/1663_garden_Office_space_with_two_herons_in_lake_and_huge_balloon_on_long_string.png with balloon] or the [https://www.explainxkcd.com/wiki/images/c/c2/1663_garden_Blitz_Girls_strong_Megan_garden.png huge balloon]), the [https://www.explainxkcd.com/wiki/images/e/e5/1663_garden_Blitz_Girls_Armadillo_tower.png small platform] or some of the smaller animals like [https://www.explainxkcd.com/wiki/images/3/32/1663_garden_One_color_Between_Blue_White_and_White_6d.png the bird], the [https://www.explainxkcd.com/wiki/images/0/09/1663_garden_Cueball_holds_a_Turtle_in_front_of_Megan_looking_like_a_cap_on_her.png turtle], or [https://www.explainxkcd.com/wiki/images/d/d4/1663_garden_Crazy_cat_peoples_garden.png cat and owls].
*There is a third version of Cueball with both hands up.
|
*Standing Cueball with color [https://www.explainxkcd.com/wiki/images/9/92/1663_garden_One_color_Between_blue_and_light_blue_2d.png 2 blue], [https://www.explainxkcd.com/wiki/images/c/c9/1663_garden_One_color_Light_blue_12h.png 3 light blue], [https://www.explainxkcd.com/wiki/images/e/e4/1663_garden_Color_04_2_5d.png 4 light blue] and [https://www.explainxkcd.com/wiki/images/b/b2/1663_garden_One_color_Blue_white_2d.png 5 Blue white]
*Hand out Cueball with color [https://www.explainxkcd.com/wiki/images/b/bf/1663_garden_One_color_Blue_6d.png 1 blue], [https://www.explainxkcd.com/wiki/images/9/92/1663_garden_One_color_Between_blue_and_light_blue_2d.png 2 blue], [https://www.explainxkcd.com/wiki/images/a/a6/1663_garden_Color_03_5d.png 3 light blue], [https://www.explainxkcd.com/wiki/images/5/5e/1663_garden_One_color_Between_light_blue_and_Blue_White_6d.png 4 light blue] and [https://www.explainxkcd.com/wiki/images/d/d1/1663_garden_One_color_White_Blue_12h.png 5 Blue white]
| [https://www.explainxkcd.com/wiki/images/c/c9/1663_garden_One_color_Light_blue_12h.png Standing]
[https://www.explainxkcd.com/wiki/images/e/e5/1663_garden_One_color_Blue_18h.png Hand out] 
|-
! [[Megan]] [[File:Garden Woman 1a.png]] [https://xkcd.com/1663/art/2x-woman-1a.png Woman 1a] [[File:Garden Handfig 1.png]] [https://xkcd.com/1663/art/2x-handfig-1.png Handfig 1] 
[[File:Garden Handfig 2.png]] [https://xkcd.com/1663/art/2x-handfig-2.png Handfig 2] [[File:Garden Sword fig.png]] [https://xkcd.com/1663/art/2x-sword-fig.png Sword fig] [[File:Garden Flying fig.png]] [https://xkcd.com/1663/art/2x-flying-fig.png Flying fig]
|
*Here are the images of Megan.
**Megan with sword seems to only occur on top of a platform or a piece of furniture.
***She seem to not be willing to pull out the sword when just standing on the ground.
***This means that she can only occur under a one color setting if that setting can also produce a platform. This is the case though see the color column.
|
*Standing (Yellow 9 standard)
*Hands up (L and R) (White 7)
*Sword ([https://www.explainxkcd.com/wiki/images/9/9c/1663_garden_One_color_Light_yellow_9d.png Yellow 9 standard] and [https://www.explainxkcd.com/wiki/images/6/6d/1663_garden_One_color_Between_Light_yellow_and_yellow_2d.png Yellow 10])
*Flying (Orange 15)
| [https://www.explainxkcd.com/wiki/images/c/cb/1663_garden_One_color_Light_yellow_12h.png Standing ] 
[https://www.explainxkcd.com/wiki/images/9/99/1663_garden_One_color_White_12h.png Hands up] 
[https://www.explainxkcd.com/wiki/images/6/6b/1663_garden_Megan_with_sword%2C_trees_octopuses_with_Cueball_bunny_ducklings.png Sword-tree platform] [https://www.explainxkcd.com/wiki/images/c/cb/1663_garden_Megan_with_sword_and_owl_on_gate.png Sword-gate] [https://www.explainxkcd.com/wiki/images/1/1d/1663_garden_My_first_linsang_cat_like_creature_in_SC.png Sword-desk] 
[https://www.explainxkcd.com/wiki/images/8/87/1663_garden_One_color_Orange_d7.png Flying]
|-
! [[Beret Guy]] [[File:Garden Beret shrub.png]] [https://xkcd.com/1663/art/2x-beret-shrub.png Beret shrub]
|
*Here is the image of Beret Guy.
| White 7 or mix of yellow and blue
| [https://www.explainxkcd.com/wiki/images/9/99/1663_garden_One_color_White_12h.png In lake] 
[https://www.explainxkcd.com/wiki/images/2/24/1663_garden_Shark_finn_and_Beret_Guy_in_same_bird_bath_fish_boat_heron_and_more.png In birdbath] 
[https://www.explainxkcd.com/wiki/images/9/9b/1663_garden_Three_colors_more_separate_Beret_Guy_in_shrubbery_and_Octopus_on_office_desk.png In shrub]
|-
! [[Ponytail]] [[File:Garden Fig 1.png]] [https://xkcd.com/1663/art/2x-fig-1.png Fig 1]
|
*Here are the images of Ponytail.
*She is also shown with a long stick, which she bends.
| Bendy-stick Ponytail occurs in Yellow 9.
| [https://www.explainxkcd.com/wiki/images/e/eb/1663_garden_Ponytail_and_two_Cueballs_cat_pillar_and_trunk_sE.png Example]
|-
! Stilt girl [[File:Garden Stilt walker.png]] [https://xkcd.com/1663/art/2x-stiltwalker.png Stilt walker]
|
*Here is the image of the girl on stilts.
| Light yellow 10
| [https://www.explainxkcd.com/wiki/images/1/1b/1663_garden_One_color_Between_Light_yellow_and_yellow_First_thing_stilts_right.png Example]
|}

===Animals===
====Mammals====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Armadillo [[File:Garden Armadillo L.png]] [https://linden.xkcd.com/art/2x-armadillo-l.png Armadillo L] 
[[File:Garden Armadillo R.png]] [https://linden.xkcd.com/art/2x-armadillo-r.png Armadillo R]
|
*Here are the images of Armadillo.
| Color: Combination of 17 and 9, 15
| [ Example]
|-
! Cats [[File:Garden Cat Balanced.png]] [https://xkcd.com/1663/art/2x-cat-balanced.png Cat Balanced] 
[[File:Garden Cat Ground.png]] [https://xkcd.com/1663/art/2x-cat-ground.png Cat Ground]
|
*Here are the images of cats.
**Look similar to the cats in the mobile game ''Neko Atsume''.
| Color?
| [ Example]
|-
! Deer [[File:Garden Deer 1.png]] [https://xkcd.com/1663/art/2x-deer-1.png Deer 1] 
[[File:Garden Deer 2.png]] [https://xkcd.com/1663/art/2x-deer-2.png Deer 2]
|
*Here are the images of Deer.
| Color?
| [ Example]
|-
! Bunny [[File:Garden Important bun.png]] [https://xkcd.com/1663/art/2x-important-bun.png Important bun]
|
*Here is the image of the Bunny.
| Color?
| [ Example]
|-
! Linsang [[File:Garden Linsang 1.png]] [https://linden.xkcd.com/art/2x-linsang-1.png Linsang 1] 
[[File:Garden Linsang 2.png]] [https://linden.xkcd.com/art/2x-linsang-2.png Linsang 2] 
[[File:Garden Linsang 3.png]] [https://linden.xkcd.com/art/2x-linsang-3.png Linsang 3] 
[[File:Garden Linsang 4.png]] [https://linden.xkcd.com/art/2x-linsang-4.png Linsang 4] 
[[File:Garden Linsang 5.png]] [https://linden.xkcd.com/art/2x-linsang-5.png Linsang 5] 
[[File:Garden Linsang 6.png]] [https://linden.xkcd.com/art/2x-linsang-6.png Linsang 6] 
[[File:Garden Linsang 7.png]] [https://linden.xkcd.com/art/2x-linsang-7.png Linsang 7] 
[[File:Garden Linsang 8.png]] [https://linden.xkcd.com/art/2x-linsang-8.png Linsang 8] 
[[File:Garden Linsang 9.png]] [https://linden.xkcd.com/art/2x-linsang-9.png Linsang 9] 
[[File:Garden Linsang 10.png]] [https://linden.xkcd.com/art/2x-linsang-10.png Linsang 10] 
[[File:Garden Linsang 11.png]] [https://linden.xkcd.com/art/2x-linsang-11.png Linsang 11] 
[[File:Garden Linsang 12.png]] [https://linden.xkcd.com/art/2x-linsang-12.png Linsang 12]
|
*Here are the images of linsangs.
**See more about [[#Linsang - cat like animal|Linsang - cat like animal]] in the trivia section.
| Color?
| [https://www.explainxkcd.com/wiki/images/6/68/1663_Garden_Ophiocordyceps_linsang.png Linsang infected by fungus]
|}

====Birds====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Flying birds [[File:Garden Bird 1.png]] [https://xkcd.com/1663/art/2x-bird-1.png Bird 1] 
[[File:Garden Bird 2.png]] [https://xkcd.com/1663/art/2x-bird-2.png Bird 2] 
[[File:Garden Bird 3.png]] [https://xkcd.com/1663/art/2x-bird-3.png Bird 3] 
[[File:Garden Bird 4.png]] [https://xkcd.com/1663/art/2x-bird-4.png Bird 4] 
[[File:Garden Bird 5.png]] [https://xkcd.com/1663/art/2x-bird-5.png Bird 5]
|
*Here are the images of flying birds.
| Color?
| [ Example]
|-
! Standing bird [[File:Garden Bird standing.png]] [https://xkcd.com/1663/art/2x-bird-standing.png Bird standing]
|
*Here are the images of Standing bird.
| Color?
| [ Example]
|-
! Duck [[File:Garden Duck 1.png]] [https://xkcd.com/1663/art/2x-duck-1.png Duck 1]
|
*Here is the image of the duck.
| Color?
| [ Example]
|-
! Heron [[File:Garden Heron L.png]] [https://linden.xkcd.com/art/2x-heron-l.png Heron L] 
[[File:Garden Heron R.png]] [https://linden.xkcd.com/art/2x-heron-r.png Heron R]
|
*Here are the images of Herons.
| Color?
| [ Example]
|-
! Owl [[File:Garden Owl.png]] [https://xkcd.com/1663/art/2x-owl.png Owl]
|
*Here is the image of the Owl.
| Color?
| [ Example]
|-
! Wading bird [[File:Garden Wading bird L.png]] [https://linden.xkcd.com/art/2x-wading-bird-l.png Wading bird L] 
[[File:Garden Wading bird R.png]] [https://linden.xkcd.com/art/2x-wading-bird-r.png Wading bird R]
|
*Here are the images of wading birds.
| Color?
| [ Example]
|-
! Water bird [[File:Garden Water bird 1.png]] [https://xkcd.com/1663/art/2x-waterbird-1.png Water bird 1] 
[[File:Garden Water bird 2.png]] [https://xkcd.com/1663/art/2x-waterbird-2.png Water bird 2]
|
*Here are the images of water bird.
| Color?
| [ Example]
|}

====From the sea====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Fish [[File:Garden Fish 1.png]] [https://linden.xkcd.com/art/2x-fish-1.png Fish 1] 
[[File:Garden Fish 2.png]] [https://linden.xkcd.com/art/2x-fish-2.png Fish 2]
|
*Here are the images of Fish.
| Color?
| [ Example]
|-
! Flying fish [[File:Flying fish 1.png]] [https://xkcd.com/1663/art/2x-flying-fish-1.png Flying fish 1] 
[[File:Flying fish 2.png]] [https://xkcd.com/1663/art/2x-flying-fish-2.png Flying fish 2] 
[[File:Garden Actual flying fish 1.png]] [https://linden.xkcd.com/art/2x-actual-flying-fish-1.png Actual flying fish 1] 
[[File:Garden Actual flying fish 2.png]] [https://linden.xkcd.com/art/2x-actual-flying-fish-2.png Actual flying fish 2]
|
*Here are the images of Flying fish.
| Color?
| [https://forums.xkcd.com/download/file.php?id=51476&mode=view Flying fish in Megan's hair] [https://forums.xkcd.com/download/file.php?id=51543&mode=view Flying fish and UGO]
|-
! Octopus [[File:Garden Octopus.png]] [https://xkcd.com/1663/art/2x-octopus.png Octopus] 
[[File:Garden Octopus hat capable.png]] [https://xkcd.com/1663/art/2x-octopus-hat-capable.png Octopus hat capable]
|
*Here are the images of Octopuses.
| Color: Blue (Only On the Pond)
| [ Example]
|-
! Sharks [[File:Garden Shark fin L.png]] [https://linden.xkcd.com/art/2x-shark-fin-l.png Shark fin L] 
[[File:Garden Shark fin R.png]] [https://linden.xkcd.com/art/2x-shark-fin-r.png Shark fin R]
|
*Here is the image of the shark fins.
| Color?
| [https://www.explainxkcd.com/wiki/images/6/6e/1663_Garden_Megan_there%27s_a_shark_in_the_water.png Shark in birdbath]
|-
! Tentacle [[File:Garden Tentacle 1.png]] [https://xkcd.com/1663/art/2x-tentacle-1.png Tentacle 1] 
[[File:Garden Tentacle 2.png]] [https://xkcd.com/1663/art/2x-tentacle-2.png Tentacle 2] 
[[File:Garden Tentacle 3.png]] [https://xkcd.com/1663/art/2x-tentacle-3.png Tentacle 3] 
[[File:Garden Tentacle 4.png]] [https://xkcd.com/1663/art/2x-tentacle-4.png Tentacle 4] 
[[File:Garden Tentacle 5.png]] [https://xkcd.com/1663/art/2x-tentacle-5.png Tentacle 5] 
[[File:Garden Tentacle 6.png]] [https://xkcd.com/1663/art/2x-tentacle-6.png Tentacle 6]
|
*Here are the images of tentacles.
| Color?
| [ Example]
|}

====Reptiles====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Snake [[File:Garden Snake 1.png]] [https://xkcd.com/1663/art/2x-snake-1.png Snake 1] 
[[File:Garden Snake 2.png]] [https://xkcd.com/1663/art/2x-snake-2.png Snake 2]
|
*Here are the images of snakes.
| Color?
| [ Example]
|-
! Turtle [[File:Garden Turtle 1.png]] [https://xkcd.com/1663/art/2x-turtle-1.png Turtle 1] 
[[File:Garden Turtle 2.png]] [https://xkcd.com/1663/art/2x-turtle-2.png Turtle 2]
|
*Here are the images of turtles.
| Color reddish? Orange 15
| [https://www.explainxkcd.com/wiki/images/6/6c/1663_Garden_octopus_turtle_capable.png Octopus turtle capable]
|}

====Insects====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Bees [[File:Garden Bee 1.png]] [https://xkcd.com/1663/art/2x-bee-1.png Bee 1] 
[[File:Garden Bee 2.png]] [https://xkcd.com/1663/art/2x-bee-2.png Bee 2] 
[[File:Garden Bee 3.png]] [https://xkcd.com/1663/art/2x-bee-3.png Bee 3] 
[[File:Garden Bee 4.png]] [https://xkcd.com/1663/art/2x-bee-4.png Bee 4] 
[[File:Garden Bee 5.png]] [https://xkcd.com/1663/art/2x-bee-5.png Bee 5] 
[[File:Garden Bee 6.png]] [https://xkcd.com/1663/art/2x-bee-6.png Bee 6]
|
*Here are the images of bees.
| Color?
| [ Example]
|-
! Beehive 
[[File:Garden Beehive-base.png]] [https://xkcd.com/1663/art/2x-beehive-base.png Beehive-base] 
[[File:Garden Beehive entrance a.png]] [https://xkcd.com/1663/art/2x-beehive-entrance-a.png Beehive entrance a] 
[[File:Beehive section.png]] [https://xkcd.com/1663/art/2x-beehive-section.png Beehive section]
|
*Here are the images that construct the beehive.
| Color?
| [https://forums.xkcd.com/download/file.php?id=51487&mode=view BlitzGirl's beehive]
|}

===Plants===
====Trees====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Tall trunks [[File:Garden Tall trunk 1.png]] [https://xkcd.com/1663/art/2x-talltrunk-1.png Tall trunk 1] 
[[File:Garden Tall trunk 2.png]] [https://xkcd.com/1663/art/2x-talltrunk-2.png Tall trunk 2] 
[[File:Garden Tall trunk 3.png]] [https://xkcd.com/1663/art/2x-talltrunk-3.png Tall trunk 3] 
[[File:Garden Tall trunk 4.png]] [https://xkcd.com/1663/art/2x-talltrunk-4.png Tall trunk 4]
|
*Here are the images of tall trunks.
| Color?
| [ Example]
|-
! Trunks [[File:Garden Trunk 1.png]] [https://xkcd.com/1663/art/2x-trunk-1.png Trunk 1] 
[[File:Garden Trunk 2.png]] [https://xkcd.com/1663/art/2x-trunk-2.png Trunk 2] 
[[File:Garden Trunk 3.png]] [https://xkcd.com/1663/art/2x-trunk-3.png Trunk 3] 
[[File:Garden Trunk 4.png]] [https://xkcd.com/1663/art/2x-trunk-4.png Trunk 4] 
[[File:Garden Trunk 5.png]] [https://xkcd.com/1663/art/2x-trunk-5.png Trunk 5] 
[[File:Garden Trunk 6.png]] [https://xkcd.com/1663/art/2x-trunk-6.png Trunk 6] 
[[File:Garden Trunk 7.png]] [https://xkcd.com/1663/art/2x-trunk-7.png Trunk 7] 
[[File:Garden Trunk 8.png]] [https://xkcd.com/1663/art/2x-trunk-8.png Trunk 8]
|
*Here are the images of smaller trunks.
| Color?
| [ Example]
|-
! Branches [[File:Garden Branch 1.png]] [https://xkcd.com/1663/art/2x-branch-1.png Branch 1] 
[[File:Garden Branch 2.png]] [https://xkcd.com/1663/art/2x-branch-2.png Branch 2] 
[[File:Garden Branch 3.png]] [https://xkcd.com/1663/art/2x-branch-3.png Branch 3] 
[[File:Garden Branch 4.png]] [https://xkcd.com/1663/art/2x-branch-4.png Branch 4] 
[[File:Garden Branch 5.png]] [https://xkcd.com/1663/art/2x-branch-5.png Branch 5] 
[[File:Garden Branch 6.png]] [https://xkcd.com/1663/art/2x-branch-6.png Branch 6] 
[[File:Garden Branch 7.png]] [https://xkcd.com/1663/art/2x-branch-7.png Branch 7] 
[[File:Garden Branch 8.png]] [https://xkcd.com/1663/art/2x-branch-8.png Branch 8] 
[[File:Garden Branch 9.png]] [https://xkcd.com/1663/art/2x-branch-9.png Branch 9] 
[[File:Garden Branch 10.png]] [https://xkcd.com/1663/art/2x-branch-10.png Branch 10] 
[[File:Garden Branch 11.png]] [https://xkcd.com/1663/art/2x-branch-11.png Branch 11] 
[[File:Garden Branch 12.png]] [https://xkcd.com/1663/art/2x-branch-12.png Branch 12] 
[[File:Garden Branch 13.png]] [https://xkcd.com/1663/art/2x-branch-13.png Branch 13] 
[[File:Garden Branch 14.png]] [https://xkcd.com/1663/art/2x-branch-14.png Branch 14] 
[[File:Garden Branch 15.png]] [https://xkcd.com/1663/art/2x-branch-15.png Branch 15] 
[[File:Garden Branch 16.png]] [https://xkcd.com/1663/art/2x-branch-16.png Branch 16] 
[[File:Garden Branch 17.png]] [https://xkcd.com/1663/art/2x-branch-17.png Branch 17] 
[[File:Garden Branch 18.png]] [https://xkcd.com/1663/art/2x-branch-18.png Branch 18] 
[[File:Garden Branch 19.png]] [https://xkcd.com/1663/art/2x-branch-19.png Branch 19] 
[[File:Garden Branch 20.png]] [https://xkcd.com/1663/art/2x-branch-20.png Branch 20] 
[[File:Garden Branch 21.png]] [https://xkcd.com/1663/art/2x-branch-21.png Branch 21] 
[[File:Garden Branch 22.png]] [https://xkcd.com/1663/art/2x-branch-22.png Branch 22] 
[[File:Garden Branch 23.png]] [https://xkcd.com/1663/art/2x-branch-23.png Branch 23] 
[[File:Garden Branch 24.png]] [https://xkcd.com/1663/art/2x-branch-24.png Branch 24]
|
*Here are the images of branches.
| Color?
| [ Example]
|-
! Leaves [[File:Garden Leaves 1.png]] [https://xkcd.com/1663/art/2x-leaves-1.png Leaves 1] 
[[File:Garden Leaves 2.png]] [https://xkcd.com/1663/art/2x-leaves-2.png Leaves 2] 
[[File:Garden Leaves 3.png]] [https://xkcd.com/1663/art/2x-leaves-3.png Leaves 3] 
[[File:Garden Leaves 4.png]] [https://xkcd.com/1663/art/2x-leaves-4.png Leaves 4] 
[[File:Garden Leaves 5.png]] [https://xkcd.com/1663/art/2x-leaves-5.png Leaves 5] 
[[File:Garden Leaves 6.png]] [https://xkcd.com/1663/art/2x-leaves-6.png Leaves 6] 
[[File:Garden Leaves 7.png]] [https://xkcd.com/1663/art/2x-leaves-7.png Leaves 7] 
[[File:Garden Leaves 8.png]] [https://xkcd.com/1663/art/2x-leaves-8.png Leaves 8] 
[[File:Garden Leaves 9.png]] [https://xkcd.com/1663/art/2x-leaves-9.png Leaves 9] 
[[File:Garden Leaves 10.png]] [https://xkcd.com/1663/art/2x-leaves-10.png Leaves 10] 
[[File:Garden Leaves 11.png]] [https://xkcd.com/1663/art/2x-leaves-11.png Leaves 11] 
[[File:Garden Leaves 12.png]] [https://xkcd.com/1663/art/2x-leaves-12.png Leaves 12] 
[[File:Garden Leaves 13.png]] [https://xkcd.com/1663/art/2x-leaves-13.png Leaves 13] 
[[File:Garden Leaves 14.png]] [https://xkcd.com/1663/art/2x-leaves-14.png Leaves 14] 
[[File:Garden Leaves 15.png]] [https://xkcd.com/1663/art/2x-leaves-15.png Leaves 15] 
[[File:Garden Leaves 16.png]] [https://xkcd.com/1663/art/2x-leaves-16.png Leaves 16] 
[[File:Garden Leaves 17.png]] [https://xkcd.com/1663/art/2x-leaves-17.png Leaves 17] 
[[File:Garden Leaves 18.png]] [https://xkcd.com/1663/art/2x-leaves-18.png Leaves 18] 
[[File:Garden Leaves 19.png]] [https://xkcd.com/1663/art/2x-leaves-19.png Leaves 19] 
[[File:Garden Leaves 20.png]] [https://xkcd.com/1663/art/2x-leaves-20.png Leaves 20] 
[[File:Garden Leaves 21.png]] [https://xkcd.com/1663/art/2x-leaves-21.png Leaves 21] 
[[File:Garden Leaves 22.png]] [https://xkcd.com/1663/art/2x-leaves-22.png Leaves 22] 
[[File:Garden Leaves 23.png]] [https://xkcd.com/1663/art/2x-leaves-23.png Leaves 23] 
[[File:Garden Leaves 24.png]] [https://xkcd.com/1663/art/2x-leaves-24.png Leaves 24] 
[[File:Garden Leaves 25.png]] [https://xkcd.com/1663/art/2x-leaves-25.png Leaves 25] 
[[File:Garden Leaves 26.png]] [https://xkcd.com/1663/art/2x-leaves-26.png Leaves 26] 
[[File:Garden Leaves 27.png]] [https://xkcd.com/1663/art/2x-leaves-27.png Leaves 27] 
[[File:Garden Leaves 28.png]] [https://xkcd.com/1663/art/2x-leaves-28.png Leaves 28] 
[[File:Garden Leaves 29.png]] [https://xkcd.com/1663/art/2x-leaves-29.png Leaves 29] 
[[File:Garden Leaves 30.png]] [https://xkcd.com/1663/art/2x-leaves-30.png Leaves 30]
|
*Here are the images of leaves.
| Color?
| [ Example]
|}

====Flowers====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Blooms [[File:Garden Flower bloom 1.png]] [https://xkcd.com/1663/art/2x-flower-bloom1.png Flower bloom 1] 
[[File:Garden Flower bloom 2.png]] [https://xkcd.com/1663/art/2x-flower-bloom2.png Flower bloom 2] 
[[File:Garden Flower bloom 3.png]] [https://xkcd.com/1663/art/2x-flower-bloom3.png Flower bloom 3] 
[[File:Garden Flower bloom 4.png]] [https://xkcd.com/1663/art/2x-flower-bloom4.png Flower bloom 4] 
[[File:Garden Flower bloom 5.png]] [https://xkcd.com/1663/art/2x-flower-bloom5.png Flower bloom 5] 
[[File:Garden Flower bloom 6.png]] [https://xkcd.com/1663/art/2x-flower-bloom6.png Flower bloom 6] 
[[File:Garden Flower bloom 7.png]] [https://xkcd.com/1663/art/2x-flower-bloom7.png Flower bloom 7]
|
*Here are the images of blooms.
| Color?
| [ Example]
|-
! Hilt [[File:Garden Flower hilt 1.png]] [https://xkcd.com/1663/art/2x-flower-hilt1.png Flower hilt 1] 
[[File:Garden Flower hilt 2.png]] [https://xkcd.com/1663/art/2x-flower-hilt2.png Flower hilt 2]
|
*Here are the images of hilt.
| Color?
| [ Example]
|-
! Stem segments [[File:Garden Flower base.png]] [https://xkcd.com/1663/art/2x-flower-base.png Flower base] 
[[File:Garden Flower segment 1.png]] [https://xkcd.com/1663/art/2x-flower-segment1.png Flower segment 1] 
[[File:Garden Flower segment 2.png]] [https://xkcd.com/1663/art/2x-flower-segment2.png Flower segment 2] 
[[File:Garden Flower segment 3.png]] [https://xkcd.com/1663/art/2x-flower-segment3.png Flower segment 3] 
[[File:Garden Flower segment 4.png]] [https://xkcd.com/1663/art/2x-flower-segment4.png Flower segment 4] 
[[File:Flower segment 5.png]] [https://xkcd.com/1663/art/2x-flower-segment5.png Flower segment 5] 
[[File:Flower segment 6.png]] [https://xkcd.com/1663/art/2x-flower-segment6.png Flower segment 6] 
[[File:Flower segment 7.png]] [https://xkcd.com/1663/art/2x-flower-segment7.png Flower segment 7] 
[[File:Flower segment 8.png]] [https://xkcd.com/1663/art/2x-flower-segment8.png Flower segment 8] 
[[File:Flower segment 9.png]] [https://xkcd.com/1663/art/2x-flower-segment9.png Flower segment 9] 
[[File:Flower segment 10.png]] [https://xkcd.com/1663/art/2x-flower-segment10.png Flower segment 10] 
[[File:Flower segment 11.png]] [https://xkcd.com/1663/art/2x-flower-segment11.png Flower segment 11] 
[[File:Flower segment 12.png]] [https://xkcd.com/1663/art/2x-flower-segment12.png Flower segment 12]
|
*Here is the image of the base and segments of the flower stems.
| Color?
| [ Example]
|-
! Star plant [[File:Garden Star Plant.png]] [https://xkcd.com/1663/art/2x-starplant.png Star Plant]
|
*Here are the images the star plant.
| Color?
| [ Example]
|-
! Tulips [[File:Garden Tulip 1.png]] [https://xkcd.com/1663/art/2x-tulip-1.png Tulip 1] 
[[File:Garden Tulip 2.png]] [https://xkcd.com/1663/art/2x-tulip-2.png Tulip 2]
|
*Here are the images of Tulips.
| Orange 15
| [https://www.explainxkcd.com/wiki/images/0/03/1663_Garden_tulip_Megan.png Tulip Megan]
|}

====Other plants====
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Cactus [[File:Garden Cactus 1.png]] [https://xkcd.com/1663/art/2x-cactus-1.png Cactus 1] 
[[File:Garden Cactus 2.png]] [https://xkcd.com/1663/art/2x-cactus-2.png Cactus 2]
|
*Here are the images of cactus.
| Color?
| [ Example]
|-
! Grass [[File:Garden Grass 1.png]] [https://xkcd.com/1663/art/2x-grass-1.png Grass 1] 
[[File:Garden Grass 2.png]] [https://xkcd.com/1663/art/2x-grass-2.png Grass 2] 
[[File:Garden Grass 3.png]] [https://xkcd.com/1663/art/2x-grass-3.png Grass 3] 
[[File:Garden Grass 4.png]] [https://xkcd.com/1663/art/2x-grass-4.png Grass 4] 
[[File:Garden Grass 5.png]] [https://xkcd.com/1663/art/2x-grass-5.png Grass 5] 
[[File:Garden Grass 6.png]] [https://xkcd.com/1663/art/2x-grass-6.png Grass 6] 
[[File:Garden Grass 7.png]] [https://xkcd.com/1663/art/2x-grass-7.png Grass 7] 
[[File:Garden Grass 8.png]] [https://xkcd.com/1663/art/2x-grass-8.png Grass 8] 
[[File:Garden Grass 9.png]] [https://xkcd.com/1663/art/2x-grass-9.png Grass 9]
|
*Here are the images of grass.
| Color?
| [ Example]
|-
! Reeds [[File:Garden Reeds 1.png]] [https://xkcd.com/1663/art/2x-reeds-1.png Reeds 1] 
[[File:Garden Reeds 2.png]] [https://xkcd.com/1663/art/2x-reeds-2.png Reeds 2] 
[[File:Garden Reeds 3.png]] [https://xkcd.com/1663/art/2x-reeds-3.png Reeds 3] 
[[File:Garden Reeds 4.png]] [https://xkcd.com/1663/art/2x-reeds-4.png Reeds 4] 
[[File:Garden Reeds 5.png]] [https://xkcd.com/1663/art/2x-reeds-5.png Reeds 5] 
[[File:Garden Reeds 6.png]] [https://xkcd.com/1663/art/2x-reeds-6.png Reeds 6] 
[[File:Garden Reeds 8.png]] [https://xkcd.com/1663/art/2x-reeds-8.png Reeds 8] 
[[File:Garden Reeds 9.png]] [https://xkcd.com/1663/art/2x-reeds-9.png Reeds 9] 
[[File:Garden Reeds 10.png]] [https://xkcd.com/1663/art/2x-reeds-10.png Reeds 10] 
[[File:Garden Reeds 11.png]] [https://xkcd.com/1663/art/2x-reeds-11.png Reeds 11] 
[[File:Garden Reeds 12.png]] [https://xkcd.com/1663/art/2x-reeds-12.png Reeds 12] 
[[File:Garden Reeds 13.png]] [https://xkcd.com/1663/art/2x-reeds-13.png Reeds 13]
|
*Here are the images of reeds.
| Color?
| [ Example]
|-
! Shrub [[File:Garden Shrub 1.png]] [https://xkcd.com/1663/art/2x-shrub-1.png Shrub 1] 
[[File:Garden Shrub 2.png]] [https://xkcd.com/1663/art/2x-shrub-2.png Shrub 2] 
[[File:Garden Shrub 3.png]] [https://xkcd.com/1663/art/2x-shrub-3.png Shrub 3] 
[[File:Garden Shrub 4.png]] [https://xkcd.com/1663/art/2x-shrub-4.png Shrub 4] 
[[File:Garden Shrub 5.png]] [https://xkcd.com/1663/art/2x-shrub-5.png Shrub 5] 
[[File:Garden Shrub 6.png]] [https://xkcd.com/1663/art/2x-shrub-6.png Shrub 6] 
[[File:Garden Shrub 7.png]] [https://xkcd.com/1663/art/2x-shrub-7.png Shrub 7] 
[[File:Garden Shrub 8.png]] [https://xkcd.com/1663/art/2x-shrub-8.png Shrub 8] 
[[File:Garden Shrub 9.png]] [https://xkcd.com/1663/art/2x-shrub-9.png Shrub 9] 
[[File:Garden Shrub 10.png]] [https://xkcd.com/1663/art/2x-shrub-10.png Shrub 10] 
[[File:Garden Shrub 11.png]] [https://xkcd.com/1663/art/2x-shrub-11.png Shrub 11]
|
*Here are the images of shrubs.
| Color?
| [ Example]
|-
! Wavy plant [[File:Garden Wavy plant 1.png]] [https://xkcd.com/1663/art/2x-wavyplant-1.png Wavy plant 1] 
[[File:Garden Wavy plant 2.png]] [https://xkcd.com/1663/art/2x-wavyplant-2.png Wavy plant 2] 
[[File:Garden Wavy plant 3.png]] [https://xkcd.com/1663/art/2x-wavyplant-3.png Wavy plant 3] 
[[File:Garden Wavy plant 4.png]] [https://xkcd.com/1663/art/2x-wavyplant-4.png Wavy plant 4]
|
*Here are the images of wavy plants.
| Color?
| [ Example]
|}

===Platforms===
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Tree platform [[File:Garden Left platform.png]] [https://xkcd.com/1663/art/2x-left-platform.png Left platform] [[File:Garden Right platform.png]] [https://xkcd.com/1663/art/2x-right-platform.png Right platform]
|
*Here are the images of platforms in trees.
| Color?
| [ Example]
|-
! Platform [[File:Garden Platform 1.png]] [https://xkcd.com/1663/art/2x-platform-1.png Platform 1]
|
*Here is the image of the basic platform.
| Color?
| [ Example]
|-
! Platform Column [[File:Garden PlatformColumn 1.png]] [https://xkcd.com/1663/art/2x-platform-column-1.png PlatformColumn 1] 
[[File:Garden PlatformColumn 2.png]] [https://xkcd.com/1663/art/2x-platform-column-2.png PlatformColumn 2] 
[[File:Garden PlatformColumn 3.png]] [https://xkcd.com/1663/art/2x-platform-column-3.png PlatformColumn 3]
|
*Here are the images of platform columns.
| Color?
| [ Example]
|-
! Stone Platform [[File:Garden Stone Platform 1 Wide.png]] [https://xkcd.com/1663/art/2x-stone-platform-1wide.png Stone Platform 1 Wide] 
[[File:Garden Stone Platform 3 Wide.png]]  [https://xkcd.com/1663/art/2x-stone-platform-3wide.png Stone Platform 3 Wide] 
[[File:Garden Stone Platform 5 Wide.png]] [https://xkcd.com/1663/art/2x-stone-platform-5wide.png Stone Platform 5 Wide]
|
*Here are the images of stone platforms.
| Color?
| [ Example]
|-
! Tall platform [[File:Garden Tall platform.png]] [https://xkcd.com/1663/art/2x-tall-platform.png Tall platform]
|
*Here is the image of the tall platform.
| Color?
| [ Example]
|}

===Other items===
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Balloon [[File:Garden Balloon.png]] [https://xkcd.com/1663/art/2x-balloon.png Balloon] 
[[File:Garden Balloon Huge.png]] [https://xkcd.com/1663/art/2x-balloon-huge.png Balloon Huge] 
[[File:Garden Balloon Segment.png]] [https://xkcd.com/1663/art/2x-balloon-segment.png Balloon Segment] 
[[File:Balloon segment short.png]] [https://xkcd.com/1663/art/2x-balloon-segment-short.png Balloon segment short]
|
*Here are the images of balloons and their strings.
| Color?
| [https://www.explainxkcd.com/wiki/images/3/34/1663_garden_S_shaped_empty_balloon_string_right.png S-shaped balloon string]
|-
! Birdbath [[File:Garden Birdbath.png]] [https://xkcd.com/1663/art/2x-birdbath.png Birdbath]
|
*Here is the image of the birdbath.
| Color?
| [https://www.explainxkcd.com/wiki/images/a/a1/1663_garden_Purple_garden_with_Heron.png Birdbath legged deer]
|-
! Boat [[File:Garden Boat 1 L.png]] [https://linden.xkcd.com/art/2x-boat-1-l.png Boat 1 L] 
[[File:Garden Boat 1 R.png]] [https://linden.xkcd.com/art/2x-boat-1-r.png Boat 1 R]
|
*Here are the images of boats.
| Color?
| [ Example]
|-
! Cairn stones [[File:Garden Cairn Base 1.png]] [https://xkcd.com/1663/art/2x-cairn-base-1.png Cairn Base 1] 
[[File:Garden Cairn Base 2.png]] [https://xkcd.com/1663/art/2x-cairn-base-2.png Cairn Base 2] 
[[File:Garden Cairn Base 3.png]] [https://xkcd.com/1663/art/2x-cairn-base-3.png Cairn Base 3] 
[[File:Garden Cairn Base 4.png]] [https://xkcd.com/1663/art/2x-cairn-base-4.png Cairn Base 4] 
[[File:Garden Cairn Base 5.png]] [https://xkcd.com/1663/art/2x-cairn-base-5.png Cairn Base 5] 
[[File:Garden Cairn Mid 1.png]]  [https://xkcd.com/1663/art/2x-cairn-mid-1.png Cairn Mid 1] 
[[File:Garden Cairn Mid 2.png]] [https://xkcd.com/1663/art/2x-cairn-mid-2.png Cairn Mid 2] 
[[File:Garden Cairn Mid 3.png]] [https://xkcd.com/1663/art/2x-cairn-mid-3.png Cairn Mid 3] 
[[File:Garden Cairn Mid 4.png]] [https://xkcd.com/1663/art/2x-cairn-mid-4.png Cairn Mid 4] 
[[File:Garden Cairn Mid 5.png]] [https://xkcd.com/1663/art/2x-cairn-mid-5.png Cairn Mid 5] 
[[File:Garden Cairn Top 1.png]] [https://xkcd.com/1663/art/2x-cairn-top-1.png Cairn Top 1] 
[[File:Garden Cairn Top 2.png]] [https://xkcd.com/1663/art/2x-cairn-top-2.png Cairn Top 2] 
[[File:Garden Cairn Top 3.png]] [https://xkcd.com/1663/art/2x-cairn-top-3.png Cairn Top 3] 
[[File:Garden Cairn Top 4.png]] [https://xkcd.com/1663/art/2x-cairn-top-4.png Cairn Top 4] 
[[File:Garden Cairn Top 5.png]] [https://xkcd.com/1663/art/2x-cairn-top-5.png Cairn Top 5]
|
*Here is the image of the stones used to form cairns.
| Color?
| [https://www.explainxkcd.com/wiki/images/2/23/1663_Garden_An_Engineer_cairns.png Gigantic rock pile]
|-
! Furniture [[File:Garden Desk 1.png]] [https://xkcd.com/1663/art/2x-desk-1.png Desk 1] 
[[File:Garden Desk lamp.png]] [https://xkcd.com/1663/art/2x-desk-lamp.png Desk lamp] 
[[File:Garden Table 1.png]] [https://xkcd.com/1663/art/2x-table-1.png Table 1]
|
*Here are the images of furniture for the office and other places.
| Color?
| [ Example]
|-
! Giant Planter [[File:Garden Giant Planter.png]] [https://xkcd.com/1663/art/2x-giant-planter.png Giant Planter]
|
*Here is the image of the giant Planter.
| Color?
| [https://www.explainxkcd.com/wiki/images/1/1a/1663_garden_Underground_light_gives_large_tub_on_top_of_pillar_then_filled_with_trees.png Giant planter with trees]
|-
! Hat [[File:Garden Hat 1a.png]] [https://xkcd.com/1663/art/2x-hat-1a.png Hat 1a]
|
*Here is the image of the black hat.
| Color?
| [ Example]
|-
! Lamppost [[File:Garden Lamp crossbar left.png]] [https://xkcd.com/1663/art/2x-lamp-crossbar-left.png Lamp crossbar left] 
[[File:Garden Lamp crossbar right.png]] [https://xkcd.com/1663/art/2x-lamp-crossbar-right.png Lamp crossbar right] 
[[File:Garden Lamppost 1.png]] [https://xkcd.com/1663/art/2x-lamppost-1.png Lamppost 1] 
[[File:Garden lamp-topper.png]] [https://xkcd.com/1663/art/2x-lamp-topper.png lamp-topper]
|
*Here are the images that may form the complete lamppost.
*The lamp post looks exactly like the one in [[665: Prudence]], and that is the one from {{w|Narnia}} which actually grew up in the forest when Narnia was created in the chronologically first book {{w|The Magician's Nephew}} when Aslan created Narnia.

| Color?
| [https://www.explainxkcd.com/wiki/images/7/7a/1663_garden_Blitz_Girls_lamp_posts_and_flowers_garden.png Example with lamp] [https://www.explainxkcd.com/wiki/images/8/81/1663_garden_Lamp_post_poles_and_mars_rover.png Example with crossbar]
|-
! Obelisk [[File:Garden Obelisk.png]] [https://xkcd.com/1663/art/2x-obelisk.png Obelisk]
|
*Here is the image of the obelisk.
| Color?
| [ Example]
|-
! Pot [[File:Garden Pot 1.png]] [https://xkcd.com/1663/art/2x-pot-1.png Pot 1] 
[[File:Garden Pot 2.png]] [https://xkcd.com/1663/art/2x-pot-2.png Pot 2] 
[[File:Garden Pot 3.png]] [https://xkcd.com/1663/art/2x-pot-3.png Pot 3]
|
*Here are the images of pots.
| Color?
| [ Example]
|-
! Rover [[File:Garden Rover.png]] [https://xkcd.com/1663/art/2x-rover.png Rover]
|
*Here is the image of the Mars rover.
| Color 16
| [https://www.explainxkcd.com/wiki/images/3/3f/1663_garden_One_color_Between_orange_red_and_red_First_thing_Mars_rover.png Mars rover]
|-
! Sale sign [[File:Garden Sale sign.png]] [https://xkcd.com/1663/art/2x-sale-sign.png Sale sign]
|
*Here is the image of the sale sign.
| Color?
| [ Example]
|-
! Saucer [[File:Garden Saucer.png]] [https://xkcd.com/1663/art/2x-saucer.png Saucer]
|
*Here is the image of the flying saucer.
| Color?
| [https://forums.xkcd.com/download/file.php?id=51432&mode=view BlitzGirl's UFO garden]
|}

===Helper structures===
{| class="wikitable collapsible collapsed" |
! To see/hide images click here:
! Description of images
! Relevant colors
! Link to screen-shots
|-
! Bird riser [[File:Garden Bird riser.png]], [[File:Garden Bird riser with background.png]] [https://xkcd.com/1663/art/2x-bird-riser.png Bird riser], and with background 
[[File:Garden Bird riser root.png]] [[File:Garden Bird riser root with frame.png]][https://linden.xkcd.com/art/2x-bird-riser-root.png Bird riser root], and with frame 
|
*Here are the images of the bird riser and it's root.
**They only seem to appear in the orange color range.
**The riser is invisible (white) and would have to have a background to be seen (both versions are shown to the left). This will never be the case in the garden as the raiser does not show up in front of other black items.
***However, the risers can be seen using the [[#Debug_mode|debug mode]], and this is used as the example to the right.
***Also using the debug mode on this [https://www.xkcd.com/1663/#1e853af8-055f-11e6-8001-42010a8e000f garden] the [https://www.explainxkcd.com/wiki/images/e/e0/1663_garden_Color_13_2_5d_debug_with_count.png number of items can be counted] as shown in the link.
****From this link it is clear that there are three bird risers attached to two of the seven bird riser roots.
****Here only single bird risers are displayed, but they can be connected see below.
**The root can often be seen on the ground, but it can be hidden behind other objects.
***Also the root has the first short part of a bird riser above the root, which is invisible (by any means). The bird riser takes hold at the top of this invisible part. That it is there can best be seen by putting a frame around the image of the root, to see that it is twice as high as the root itself. Such an image is also shown to the left. (But the end can also be seen in the debug mode images).
*The riser are used to make items fly in the air.
**I.e. the five types of flying birds, the saucer, flying Megan and the two "actual flying fish", can attach them selves to the end of a bird riser.
**Whereas the risers need to have a root to begin, then more risers can attach to the end already existing risers, thus getting much higher up in the air than one riser (all the way up!).
**Risers can have any angles to each others, even going further down, which can explain birds and other flying objects touching the ground (even making an object be situated partially beneath the ground, like [https://www.explainxkcd.com/wiki/images/c/cf/1663_garden_One_color_Orange_6d.png this flying Megan] from this [https://xkcd.com/1663/#0d6bca62-fcf3-11e5-8019-42010a8e0005 garden] or maybe even outside the frame, see last example below).
**As opposed to anything else the light that creates a bird (or other flying item) does not need to touch the actually bird, but rather the place from where the bird riser is rooted.
***This indicates that the birds etc. can grow from light touching the base of the risers rather than the tip.
****Since many bird risers can grow in layers above the first riser it is clear that the bird riser does not appear with a bird on them in one go!
***There are many examples with [https://www.explainxkcd.com/wiki/images/4/48/1663_garden_One_color_Orange_9d.png birds] or [https://www.explainxkcd.com/wiki/images/4/4f/1663_garden_One_color_Between_orange_and_orange_red_8d.png flying Megan] "growing" outside the light, where no light ever was, as seen from some of the [[1663:_Garden/Users_gardens#Locked_gardens_only_for_explanation_use|locked experimental gardens]].
*When selecting a bird riser root all bird risers and all flying things connected to these will also be selected (and deleted if the root is deleted).
**Here are two examples from the same [https://xkcd.com/1663/#578b80bc-fd96-11e5-8001-42010a8e000a garden] where two different roots have been selected:
***In this [https://www.explainxkcd.com/wiki/images/b/b9/1663_garden_14_Between_orange_and_orange_red_15d_selected_bird_riser_root.png example] the selected root is hidden by the tulip in the red circle. Seven birds are selected both right and left of this root. (Two of them on top of each other).
***In this [https://www.explainxkcd.com/wiki/images/2/27/1663_garden_14_Between_orange_and_orange_red_15d_selected_bird_riser_root_Megan.png example] the root in the red circle is completely hidden by turtles etc. It connects to three birds and one flying Megan, showing that it is the bird riser roots that also connect to her.
**In this next example [https://xkcd.com/1663/#59246c86-fcce-11e5-8001-42010a8e0010 garden] the links between a root and four birds are displayed in detail.
***The [https://www.explainxkcd.com/wiki/images/7/73/1663_garden_SF_final.png first image] is just the normal garden view screen-shot (lamps deleted). 10 birds can be seen; there are six birds over the lamp post; two near the ground under the high platform; one near the right crown of the tree; and one to the left that looks like it is a part of the linsang. Several bird riser roots (at least five) can be seen on the ground from the middle of the platform and right past the cat (two under it) and then at the sign.
***In the [https://www.explainxkcd.com/wiki/images/8/8d/1663_garden_SF_final_selected.png second image] the root at the foot of the Sale sign has been selected. Four birds have been selected, spread out over the entire section with birds, including the lowest, the highest, the left most and one over the lamp post.
***In the [https://www.explainxkcd.com/wiki/images/7/73/1663_garden_SF_final_debug.png third image] debug mode has been used. All the long purple lines (of equal length) indicate bird risers.
***In the last [https://www.explainxkcd.com/wiki/images/3/35/1663_garden_SF_final_debug_drawing.png fourth image] the links between the root and the four birds have been indicated. A zero (0) has been written under the root. Then 1 indicates the single bird riser that goes to the right bird over the lamp post. Bird riser 2, 3 and 4 connect to each other from the root up to the highest bird right of the crown. Then bird riser 5 goes from that to the bird near the linsang left of the tree, and finally bird riser 6 and 7 goes straight back and down to the lowest bird near the ground.
****Several bird risers seems to go beneath the ground!
**That bird risers can go beneath the ground has already been show with flying Megan partly under ground.
***In this last example it is made clear that birds can then appear either under ground (or under the top of other structures blocking their view) or even totally outside the frame (as indicated above the bird risers seem to be able to sprout items outside the cones of light, as long as they grow in the light them selves).
***The proof for this comes in this [https://www.explainxkcd.com/wiki/images/1/16/1663_garden_Color_13_5d_debug_with_count.png example] with the debug version of this [https://www.xkcd.com/1663/#fa1b5c92-055e-11e6-8001-42010a8e000f garden] showing the count:
****At the time of [https://www.explainxkcd.com/wiki/images/7/73/1663_garden_Color_13_5d.png these images] there where only 8 visible birds
****But the count lists 20 birds, indicating that no less than 12 birds are hidden from view!
| Color [https://www.explainxkcd.com/wiki/images/4/48/1663_garden_One_color_Orange_9d.png 13 Orange] and [https://www.explainxkcd.com/wiki/images/4/4f/1663_garden_One_color_Between_orange_and_orange_red_8d.png 14 Orange].
| [https://www.explainxkcd.com/wiki/images/e/e7/1663_garden_Color_13_2_5d_debug_bird_risers.png Bird riser debug] 
[https://www.explainxkcd.com/wiki/images/5/5e/1663_garden_Color_14_3d.png Root]
|-
! Null [[File:Garden Null.png]] [https://xkcd.com/1663/art/2x-null.png Null] [[File:Garden Null continue.png]] [https://xkcd.com/1663/art/2x-null-continue-air.png Null continue] 
[[File:Garden Null continue air.png]], [[File:Garden Null continue air with background.png]] [https://xkcd.com/1663/art/2x-null-continue-air.png Null continue air], and with background 
|
*Here are the images of ''null''. They cannot normally be seen, the air version even have to have a background to be seen (both versions are shown). They are used for ??.
| Color
| [ Example]
|}

{{comic discussion}}

[[Category:April fools' comics]] 
[[Category:Comics with color]]
[[Category:Dynamic comics]]
[[Category:Interactive comics]]
[[Category:Comics with animation]] 
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Beret Guy]]
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Black Hat]] 
[[Category:Animals]]
[[Category:Sharks]] 
[[Category:Mars rovers]]
[[Category:Protip]]
[[Category:Buns]]

[[Category:Chronicles of Narnia]]
[[Category:Stilts]]

827: My Business Idea

2023-07-24T02:30:32Z

Scyrmion: Undo revision 318382 by 172.69.214.158 (talk)

{{comic
| number = 827
| date = November 29, 2010
| title = My Business Idea
| image = my_business_idea.png
| titletext = We didn't believe you at first, but we asked like three people who were at that party. They not only corroborated your story, but even said you totally mentioned wanting to start a company someday. Sorry! If this isn't enough money, let us know.
}}

==Explanation==
{{incomplete|The article doesn't explain the reference to House of Leaves. (the article itself is also pretty small, it should be longer). No not remove this tag too soon.}}
Many people have shared [[Cueball]]'s experience of seeing someone else make a profit from an idea that they themselves had. This comic plays with the thought of what would happen if {{w|intellectual property}} thinking was taken to an extreme, and if companies or people were keener on "setting things right" than money.

In reality, having a great idea alone, of course, does not create a profitable business; there must generally be an enormous amount of effort put in to create a business from scratch, popularize it, and keep it standing. Having done none of this, Cueball would probably not deserve close to the "30% cut" he claims even if intellectual property did work the way it is presented here. Multiplying $20,000,000 by 30% gives $6,000,000, which would be a lot of cash for doing nothing but having an idea and telling it to someone.

The delivery address is to Ash Tree Lane, and as shown in [[472: House of Pancakes]], Randall knows how to mess with people who've read {{w|House of Leaves}}.

The title text is an extension of the comic with increasingly extreme thinking.

==Transcript==
:[Cueball is sitting at his desk, pointing at his laptop.]
:Cueball: Dude! I had this idea like five years ago, and some company just got rich doing it! - I want my cut.

:[Cueball starts typing.]
:Person off-screen: That's not how it works.
:Cueball: Sure it is. I'm applying for my share now.
:Person: Wait, what?

:[A browser window with the title 'Department of Ideas'. It has a series of text boxes.]
:Date you had the idea:
::Like five years ago.
:Proof you had it:
::I told my friend Mike - you can ask him! I was all "you know what would make a great business idea?" and he was all...
:Their profit so far:
::$20,000,000
:Share you deserve (be fair!):
::[Drop-down.]
:::25%
:::'''30%'''
:::35%
:Mailing address:
::137 Ash Tree Ln

:[Cueball still at the laptop, above him is a SUBMIT button, and it shows a pointing hand cursor.]
:CLICK

:[Last panel set slightly lower than the rest.]
:[Cueball is in front of an open box full of cash, with cash in his hand. A FedEx delivery guy is on the other side of the box with his PDA and pen.]

==Trivia==
This comic was originally called [[827: Business Idea]], but Randall renamed it on 11:35 AM UTC to resolve a conflict on [https://xkcd.com xkcd.com]. The conflict was created when he released the comic [[1721: Business Idea]] around five years after this comic's release because both comics shared the same name and filename. This is the third time Randall has released a comic with a [[:Category:Comics sharing name|name exactly the same]] as a previous comic.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics with color]]
[[Category:Comics sharing name|Business Idea]]

2804: Marshmallow

2023-07-24T02:25:55Z

Scyrmion: Undo revision 318508 by 172.70.131.162 (talk)

{{comic
| number = 2804
| date = July 19, 2023
| title = Marshmallow
| image = marshmallow_2x.png
| imagesize = 670x334px
| noexpand = true
| titletext = The increasing number of graham crackers and chocolate bars in orbit has created a growing risk of Kessler s'mores.
}}

==Explanation==
{{incomplete|Created by a CELESTIAL S'MORE - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
This comic shows the atmospheric re-entry process of a capsule similar to that used in the Apollo moon landing program in the late 1960s and early 1970s. This capsule features a fictional Reentry Marshmallow Toasting Module, with a marshmallow on a deployable stick, which is exposed to airflow during reentry.

During reentry, the capsule would presumably be going at orbital speeds, which for Earth are in excess of 8 km/s. This high velocity heats up the air around the capsule as the kinetic energy is dissipated.{{Actual citation needed}} This has the effect of heating the marshmallow. Additionally, reentry heating effects typically look like flames covering the bottom of the reentering object. This is very similar to a common practice on the Earth's surface of holding a marshmallow on a stick over a static fire on the ground, like a campfire, which also heats the marshmallow, improving its taste.

At the start of the panel, the capsule is approaching atmospheric entry, so any aerodynamic forces would not have begun yet. "All systems nominal" is an aerospace phrase that means all systems (including life support, navigation and stability systems) are performing as expected. However, once the atmospheric effects begin then something goes wrong.

Having a long, thin extension to the airflow will disrupt the aerodynamics, as air starts pushing up against the roasting stick, creating an unbalanced torque that pushes the marshmallow further back into the airflow, rotating the entire capsule. This angular acceleration continues until the aerodynamic design of the rest of the capsule plays a significant factor, rotating the capsule back to its original position, and starting the uncontrollable cycle of oscillations anew. Hence, the astronaut on board reports some oscillations to Houston.

This prompts the unnamed astronaut to tell their colleague, Smith, to put away the marshmallow roaster. This would clean up the aerodynamic profile and stop the oscillation. This is met with resistance that the marshmallow is not cooked yet. This may be expected, as due to the design of the module, it appears as though the marshmallow has been on the outside of the capsule for the entire journey, exposed to the vacuum of space. In this situation, it would have radiated all its heat energy away, reaching temperatures near absolute zero (approximately -273.15 degrees Celsius, the absolute coldest temperature physically achievable). A very brief moment of shock heating from atmospheric effects may not have bought the marshmallow up to a consumable temperature, or even affected the internals of the marshmallow at all. The goal of roasting marshmallows is often to melt the inside of a marshmallow completely, so if this is still frozen, that defeats the entire purpose of the module.

"Houston" is the radio {{w|callsign}} for {{w|Christopher C. Kraft Jr. Mission Control Center|NASA Mission Control}}, located in Houston, Texas. During reentry, the superheated air forms a plasma phase and disrupts radio signals. Hence, it is doubtful that Mission Control would have received this communication from the capsule, and it is very unlikely Mission Control would have received further updates from the capsule until the reentry process was largely finished. This would make the Mission Control operators very concerned over the success of the reentry. But as orbital mechanic and spaceman extraordinaire {{w|Scott Manley}} has discussed the feasibility of [https://www.youtube.com/watch?v=Zwf0RWXx8BY roasting a turkey by dropping it from space] (and Randall has himself addressed the issue of {{what if|28|cooking steaks}}), the astronauts featured in this cartoon are not straying too far from accepted marshmallow roasting techniques and should not be reprimanded by NASA.

The caption for the panel muses that maybe the concept of the module was a mistake, which is a fair assessment given the number of flaws in the design. It would indeed be far better to have ''two'' such units, set upon opposing sides of the module and operated in conjunction, to balance rotational forces. Or even three of them, set 120° apart from each other, perhaps automatically and independently actuated to tune out all ''other'' undesired aerodynamic effects – with the added advantage of simultaneously preparing snacks for all three of the astronauts that typically inhabit an Apollo capsule, not just Smith. However, if there is no way to retrieve the marshmallows without exiting the capsule, they would likely be somewhat salty and waterlogged after the time the capsule splashes down and the astronauts can "enjoy" their cooking.

The title text refers to a popular snack of {{w|S'more|s'mores}}, made by placing a marshmallow roasted over a fire with some chocolate between two crackers, similar to a sandwich. It also refers to a problem in rocketry, known as {{w|Kessler syndrome}}. Kessler syndrome is a scenario where the density of {{w|Low Earth orbit#Space_debris|space junk in low Earth orbit}} is so high that pieces of space junk crash into each other, breaking apart into smaller pieces. This increases the amount of space junk in orbit, setting off a cascade that could render low earth orbit unusable. These two concepts are combined in a ridiculous way, whereby instead of space junk, it is Graham crackers and chocolate bars that are polluting space. These, combined with the marshmallow from the toasting module, would create celestial s'mores, a novel and frankly wacky concept, as the United States space program does not primarily consist of chocolate and Graham crackers.{{Citation needed}}

==Transcript==
:[A space capsule beginning reentry into Earth's atmosphere is shown. There are four versions of this as it moves deeper and deeper into the atmosphere, but shown in a single panel.]

:[The first version is shown to the left with just a bit air resistance shown with thin dotted lines around and behind it. The capsule looks pretty standard with the broad bottom with the heat shield pointing forwards, and the capsule above it narrowing in a pyramid shape. There are a circular shapes (windows?) and some other lines indicating either doors or access panels. The one special feature is on the left, a stick is held back along the edge of the capsule from a extrusion near the bottom of the capsule. At the top of the stick a white square is located. From inside the capsule one of the unseen astronauts is speaking, possibly with ground control. All speech texts are located in rectangular frames with jagged arrows pointing towards the capsule.]
:Astronaut voice: We're approaching atmospheric entry.
:Astronaut voice: All systems nominal.

:[In the second version air resistance has increased a lot, with many more and thicker lines indicating the air resistance. At this point the arm with the white square turns on its pivot so it is now sticking straight out from the capsule far outside the heat shield below. Two lines indicate the circular movement and the release of the stick makes a loud noise:]
:''Fwip''

:[In the third version air resistance continues to increase, but now also the stick and particular the white square at the end begins to heat up, smoke coming of from the white square. Two small lines on either side of the top of the capsule indicates it is shaking.]

:[In the forth version the air resistance is about the same, but there are now six larger lines at the top of the capsule, two on either side and two above indicating more violent shaking of the capsule. The white square on the stick seems to be burning.]
:Astronaut voice: Houston, we're experiencing some oscillations. Vehicle is becoming difficult to control.
:Astronaut voice: Smith, retract that stupid arm.
:Astronaut Smith's voice: No! It's not ready yet!

:[Caption below the panel:]
:In retrospect, the reentry marshmallow toasting module was a mistake.

{{comic discussion}}

[[Category:Space]]
[[Category:Food]]

2797: Actual Progress

2023-07-24T02:06:32Z

Scyrmion: Undo revision 318434 by 172.70.100.14 (talk)

{{comic
| number = 2797
| date = July 3, 2023
| title = Actual Progress
| image = actual_progress_2x.png
| imagesize = 512x232px
| noexpand = true
| titletext = Slowly progressing from 'how do protons behave in relativistic collisions?' to 'what the heck are protons even doing when they're just sitting there?'
}}

==Explanation==
{{incomplete|Created by a CONFUSED RESEARCHER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

An edge case is a situation, often in software engineering but also in other domains, that is rare and may need special handling and does not perform the way most of the situations do.

At the start of tackling a complex problem, somebody may come up with a simplified interpretation of it, see it as simple, and implement and even deploy a system that uses their interpretation. These partial (incorrect) and ingeniously useful solutions are called heuristics in software engineering. If the developer is unaware that their formation of the problem is incorrect, they may happily dive into edge cases hoping to hash them out and resolve them, only to uncover that the very underpinnings of their possibly-live system are based on false perceptions or logic and then often even be at a loss as to how it is working at all.

Similar issues can arise in the physical sciences. A few pieces of experimental data, taken under novel conditions, may not fit the currently-accepted model. Attempts to reconcile them may lead to the discovery that many other pieces of data, which previously had been taken to confirm that model, lead to problems when they are examined carefully. Ultimately, a better, more generally applicable model may be found. For example, Mercury's orbit isn't consistent with strictly Newtonian mechanics, a problem that resulted in many theories but which was ultimately resolved by Einstein's Theory of General Relativity. Extremely careful measurements of other planets' orbits would have revealed that they, too, don't conform to Newtonian mechanics; the effect is general, but most easily observed with Mercury because of its relative proximity to the sun. (More commonly, the few pieces of data that don't fit may be found to be invalid, a result of experimental error under the novel conditions. "They laughed at Galileo... but they also laughed at Bozo the Clown.")

At this point it may be the case that the developer is actually working on a cutting-edge research challenge, unaware that this is the case, and the problem space they have to grapple with is one that is actively being worked on, yet nobody has yet completely addressed. In [[1425: Tasks]], a naive boss asks an engineer to perform two tasks that the engineer gives wildly different estimates for the developmental timespan. Before the easy accessibility of research papers it was much less obvious when this was or was not happening. And today, when many historically very hard problems have many more well-known solutions, and many of the very hard problems that have been intractable in the past are demonstrating aggressive progress that anyone can step in and review, the situation is quite different and much more tangible.

Another quite common software engineering situation like the comic is when working with a codebase that has been rushed to market without organizing and modeling its underlying concepts well: “spaghetti code”. At first one may think they can enter the software and simply patch a fix, but past similar patches have made the parts needlessly intertwined and baked any heuristics in in an unmaintainable way.

The joke regarding “actual progress” is both sarcastic and possibly referring to how the most progress is made on a problem when its general structure and underpinnings are addressed directly: when it is better understood and its root causes engaged. This appears ironic when it means breaking apart the solution to unusability before rebuilding a better one, which is usually what happens here; this is called refactoring and is analogous to taking everything off the shelves of a slightly-messy room, making it very messy, before putting everything back in a new mess-free organization. In both situations if your new solution has a crucial mistake you end up with a much worse situation.

The title is similar to [[1906: Making Progress]] which shares a similar structure of "I Started... But now, After..." but ends up with problems listed in a spreadsheet rather than more confusion.

The title text may have been partially inspired by the PBS Spacetime episode [https://www.youtube.com/watch?v=TbzZIMQC6vk "Did AI Prove Our Proton Model WRONG?"] released twelve days before this comic, which discusses how physicists don't have a proven accurate model for the internal structure of a proton at rest and that having an AI analyze collision data resulted in a model significantly different from human-made ones.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[Cueball is sitting on an office chair at a desk and has his hand on a laptop. Ponytail is standing behind him.]
:Cueball: When I started this morning, there were a few edge cases I was confused about.

:[Panel of just Cueball sitting on the office chair.]
:Cueball: But now, after a full day of research,

:[Same scene as in the first panel, but Cueball has his hand on his lap.]
:Cueball: I'm confused about all the regular cases, too.
:Ponytail: Ah, '''''actual''''' progress!

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Science]]
[[Category:Physics]]

2802: Fireflies

2023-07-24T02:02:28Z

Scyrmion: Undo revision 318440 by 172.70.100.14 (talk)

{{comic
| number = 2802
| date = July 14, 2023
| title = Fireflies
| image = fireflies_2x.png
| imagesize = 740x573px
| noexpand = true
| titletext = I feel bad for Earth 2 and their shadowflies.
}}

==Explanation==
{{incomplete|Created by THE INSECT VERSION OF DYLAN THOMAS. Do NOT delete this tag too soon.}}

{{w|Fireflies}} are varieties of beetles that emit flashes of light, a process known as {{w|bioluminescence}}. Megan explains that while this ability is not uncommon in ocean-dwelling species, it's pretty rare on land. Presumably, this is because sunlight doesn't penetrate very far under water, so there's evolutionary pressure there to develop a process to generate one's own light. Land animals, on the other hand, have much less need to generate their own light -- even at night there's light from the moon and stars, so nocturnal animals tend to have good eyesight or other enhanced sensory abilities ({{w|echolocation}}, {{w|olfaction}}, etc). It's thought that bioluminescence in fireflies originally served {{w|aposematism|aposematically}} to ward off predators from larvae, but that it was co-opted as an adult mating signal. There are many varieties of {{w|List of bioluminescent fungus species|bioluminescent fungus species}}, and the ecological benefit of that effect is uncertain. Some ocean-dwelling species, such as {{w|anglerfish}}, use their bioluminescence as lures for prey, whilst other creatures {{w|Counter-illumination|use it as camouflage}}. Yet others may employ such light as warning and/or as mating signals to deliberately reveal (not conceal) their presence. Often creatures with sufficient control of their phosphorescence can even fulfil multiple purposes according to need. These functions are similar to how organisms in more well-lit environments might normally rely upon surface hues (of skin, fur, feathers, scales, etc.) that work more ({{w|Chromatophore|or less}}) passively under external illumination. Megan also mentions fatty acid enzymes, presumably a reference to {{w|luciferase}}, a class of enzymes used by fireflies and many other bioluminescent organisms.

While Megan and Cueball are walking towards a field with fireflies, she points all this out and suggests that it was just a fluke that fireflies developed this ability. When they see the firefly display, the two of them agree that we're lucky to be on a planet where this happened. Sadly, the moment may be fleeting as fireflies are going extinct, at least in North America.[https://www.usatoday.com/story/news/nation/2022/07/02/fireflies-possible-extinction-across-us/7795410001/]

The title text suggests that there's an alternate Earth that has "shadowflies", which are presumably like fireflies but cast shadows instead of light, and that this isn't as nice for the people there. Since everything that's opaque casts a shadow{{citation needed}}, this isn't really much of an ability. Possibly Randall's shadowflies have some sort of {{w|vantablack}}-like coating, or somehow create darkness near them beyond merely absorbing incident light (in violation of physics as we understand it). "Earth 2" is the name of an {{w|Earth-Two|alternate world in the DC Comics universe}}, but it's unclear if this is the specific world being referred to. A presumably different alternate earth has been [[1268: Alternate Universe|mentioned before]]. Earth 2 may also be a reference to an actual {{w|exoplanet}} which appears very similar to Earth.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[Cueball and Megan are seen in silhouette (drawn in white against a black background) throughout the strip. They are walking to the right.]
:Cueball: So where is this spot?
:Megan: It's just up ahead.

:[Cueball and Megan continue walking.]
:Megan: You know,
:Megan: fireflies didn't have to exist.

:[Closeup on Megan.]
:Megan: The ocean has lots of bioluminescence, but it's less common on land.
:Megan: Creatures that glow are pretty rare here.

:[Cueball and Megan continue walking. The light of one firefly is seen to their right.]
:Megan: So it's not some niche whose exploitation was inevitable.
:Megan: If insects hadn't stumbled on their fatty acid enzyme trick, Earth just wouldn't have fireflies.
:Megan: Ooh, look!
:Megan: They're starting!

:[A panel as wide as the first four combined. Cueball and Megan stand in the tall grass, at night, and many stars can be seen in the sky above them. Above and below them, to their left and right, the lights of dozens of fireflies can be seen.]
:Cueball: I'm glad we got a planet that has these.
:Megan: Yeah, it's a good one.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Biology]]
[[Category:Animals]]
[[Category:Comics with inverted brightness]]

1: Barrel - Part 1

2023-07-24T02:01:53Z

Scyrmion: Undo revision 318450 by 172.70.100.13 (talk)

{{comic
| number = 1
| date = September 30, 2005
| title = Barrel - Part 1
| image = barrel_cropped_(1).jpg
| titletext = Don't we all.
}}

==Explanation==
This is the first comic in the [[:Category:The Boy and his Barrel|The Boy and his Barrel series]], which shows a young boy floating in a barrel in an ocean that doesn't have a visible end. It comments on the unlikely optimism and perhaps naïveté people sometimes display. The [[Barrel Boy]] is completely lost and seems hopelessly alone, without any plan or control of the situation. Yet rather than afraid or worried, he is instead quietly curious: "I wonder where I'll float next?" Although not necessarily the situation in this comic, this is a behavior people often exhibit when there is nothing they can do about a problematic situation for a long time; they may have given up hope or developed a cavalier attitude as a coping mechanism.

The title text expands on the philosophical content, with the boy representing the average human being: wandering through life with no real plan, quietly optimistic, always opportunistic, and clueless as to what the future may hold.

The isolation of the boy may also represent the way in which we often feel lost through life, never knowing quite where we are, believing that there is no one to whom to turn. This comic could also reflect on Randall's feelings towards creating xkcd in the first place; unsure of what direction the web comic would turn towards, but hopeful that it would eventually become the popular web comic that we know today.

This is the first in a six-part series of comics whose parts were randomly published during the first several dozen strips. The series features [[Barrel Boy]], a character that is different from what would quickly become the xkcd [[stick figure]] style.

The full series can be found [[:Category:The Boy and his Barrel|here]]. The comics are listed in the order chosen by Randall:
* [[1: Barrel - Part 1]]
* [[20: Ferret]]
* [[11: Barrel - Part 2]]
* [[22: Barrel - Part 3]]
* [[25: Barrel - Part 4]]
* [[31: Barrel - Part 5]]

After Randall released the full [http://liveweb.archive.org/web/20070207052159/http://www.xkcd.com/barrel.html The Boy and his Barrel] story on the site, it became clear that the original comic [[20: Ferret]] was also part of the series.

In [[1110: Click and Drag]] there is a reference to this comic at {{1110|1|n|48|e}}.

==Transcript==
:[A boy sits in a barrel which is floating in an ocean.]
:Boy: i wonder where i'll float next?

:[A smaller frame with a zoom out of the boy in the barrel seen from afar. The barrel drifts into the distance. Nothing else can be seen.]

==Trivia==
*This was the 5th comic originally posted to [[LiveJournal]].
**The previous comic was [[2: Petit Trees (sketch)]].
**The next was [[24: Godel, Escher, Kurt Halsey]].
*The original title was "Barrel".
*Original [[Randall]] quote: "He's fairly upbeat about the situation!"
*This was one of the [[:Category:First day on LiveJournal|thirteen first comics]] posted to LiveJournal within 12 minutes on Friday September 30, 2005.
*This comic was posted on [[xkcd]] when the web site opened on Sunday the 1st of January 2006.
**It was posted along [[:Category:First day on xkcd|with all 41 comics]] posted before that on LiveJournal as well as a few others.
**The latter explaining why the numbers of these 41 LiveJournal comics ranges from 1-44.
*This is the first of the original drawings that was not drawn on [[:Category:Checkered paper|checkered paper]].
*A more realistic description of the behavior of a barrel in water is here: [http://www.wired.com/wiredscience/2013/12/should-dwarves-stand-up-in-floating-barrels/ Wired Science: Should Dwarves Stand Up in Floating Barrels?]

{{comic discussion}}
[[Category:Posted on LiveJournal| 05]]
[[Category:First day on LiveJournal| 05]]
[[Category:First day on xkcd]]
[[Category:The Boy and his Barrel|01]]
[[Category:Comics sharing name|Barrel 01]]
[[Category:Philosophy]]
[[Category:Comics with lowercase text]]
[[Category:Comics featuring Barrel Boy]]

2804: Marshmallow

2023-07-24T02:01:04Z

Scyrmion: Undo revision 318436 by 172.70.100.14 (talk)

2648: Chemicals

2022-07-20T22:03:16Z

Scyrmion: Undo revision 289520 by 108.162.245.167 (talk)

{{comic
| number = 2648
| date = July 20, 2022
| title = Chemicals
| image = chemicals.png
| titletext = It's hard to believe, but lots of kids these days ONLY know how to buy prepackaged molecules.
}}

==Explanation==
{{incomplete|Created by BIG MOLECULE - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
In this comic, Megan mentions that you can find the chemical formulas for chemicals online, and that they spend a lot on fancy chemicals. Bizarrely, she suggests that "they can assemble" their chemicals themselves. When Megan says this she is holding a sheet that contains the chemical formula for nitrobenzene. This would be difficult without some fancy chemistry equipment.{{citation needed}} This formula also adds to the humor because the synthesis of nitrobenzene is highly exothermic{{citation needed}} and thus extremely dangerous, and gives a reasonable response to Cueball's comment as to why more people don't "manufacture" their own chemicals.

Today's comic premise may have been prompted by recent news that [https://english.elpais.com/science-tech/2022-07-15/for-the-first-time-in-history-we-can-modify-atomic-bonds-in-a-single-molecule.html scientists have found a way to assemble and change atoms in a single molecule] by modifying its bonds. Or it may also be completely unrelated.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[Megan and Cueball standing next to each other. Megan has her palms raised.]
:Megan: You know how our company spends a lot on expensive chemicals?
:Cueball: Yeah?

:[Megan holding up a piece of paper with a chemical formula on it, as well as some computation for the number of atoms needed]
:Megan: Well, I just learned you can look up all of the formulas online!
:Megan: We can just buy the atoms in bulk and assemble them here!

:[Cueball still standing. Megan walking off-panel to the right]
:Cueball: I wonder why more places don't do that.
:Megan: People have no idea they're getting ripped off by Big Molecule!

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Chemistry]]

2648: Chemicals

2022-07-20T21:56:30Z

Scyrmion: Undo revision 289513 by 108.162.246.206 (talk)