explain xkcd - User contributions [en]

2828: Exoplanet Observation

2023-09-13T18:27:22Z

172.70.90.140: /* Explanation */ Well, lice *are* a form of life, but it was a typo!

{{comic
| number = 2828
| date = September 13, 2023
| title = Exoplanet Observation
| image = exoplanet_observation_2x.png
| imagesize = 295x272px
| noexpand = true
| titletext = NASA prefers to say that their rovers are 'looking for signs of past life on Mars' and not 'ghost hunting.'
}}

==Explanation==
{{incomplete|Created by an ALIEN GHOST EXORCIST - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

Spectral analysis as used in the study of exoplanets and other distant objects in space refers to using the intensities of different frequencies of light (and other electromagnetic frequencies) from stars which they occlude to infer data about their chemical composition. This is used to detect certain gases in the atmosphere, such as {{w|Oxygen#Allotropes|free oxygen}}, which might suggest generation by and for Earth-like life. On the day before this comic was published, NASA announced that spectral analysis of the exoplanet K2-18 b showed abundance of methane and carbon dioxide, and shortage of ammonia, which are chemical footprints that support the hypothesis that it may have a life-supporting water ocean; and there was possible detection of dimethyl sulfide, which on Earth is only produced by life.[https://www.nasa.gov/goddard/2023/webb-discovers-methane-carbon-dioxide-in-atmosphere-of-k2-18b] The word spectral as in spectral analysis refers to the electromagnetic spectrum. If confirmed, these would be very interesting scientific facts that would definitely drive further scrutiny, although it may yet turn out to be less remarkable {{w|Life on Venus#Phosphine|on closer study}}.

"Spectral" can also be used to refer to ghosts or "spectres". Here it is suggested that the planet may have ghosts in its atmosphere due to the light that they absorb, similar to how gases may absorb certain wavelengths. Like many atmospheric gases, ghosts are typically invisible{{Citation needed}}, however they may have their own absorption spectrum distinguishing them from normal gases. The presence of ghosts in an exoplanet's atmosphere can also be considered evidence of (past) alien life.

The title text refers to the search for past life on Mars. It draws similarities between looking for real signs such as specific molecules or fossils (which NASA is actually doing), and looking for fictional ghosts of dead creatures (which would also be an indication of past life). In a very loose sense, real signs such as gases or fossils could be considered "ghosts" of past life.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:: [Cueball is holding a stick and pointing at a slide with two ghosts and a planet]
:: Cueball: When the planet passed in front of its host star, some of the light was absorbed by ghosts, indicating that the planet is likely haunted.

:: [Caption below the panel]
:: Exoplanet Spectral Analysis

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Astronomy]]
[[Category:Exoplanets]]
[[Category:Aliens]]
[[Category:Puns]]

1061

2023-08-29T09:07:28Z

172.70.90.140: Undo revision 322514 by 162.158.38.237 (talk) Something that needs reverting.

#REDIRECT[[1061: EST]]

2575: What If? 2

2023-07-21T10:19:16Z

172.70.90.140: /* Trivia */ Hotcat messed up the previously appended comment. Moved 'back' and added lowercase comment accordingly.

<noinclude>:''For other instances of this title, see [[What If (disambiguation)]]</noinclude>.
{{comic
| number = 2575
| date = January 31, 2022
| title = What If? 2
| image = what_if_2.png
| titletext = CLARIFICATION: By 9/13, I mean September 13th, not the 9th day of Jancember, the cursed 13th month that exists between December and January in the transdimensional temporal plane.
}}

==Explanation==
This comic is [[Randall]]'s way of announcing and [[:Category:Book promotion|promoting]] his new book, ''[[What If? 2]]'', based on his ''[[what if? (blog)|what if?]]'' blog and following his first what if book.

The entire comic (including the [[header_text#2022-01-31_-_What_if.3F_2|xkcd Header text]]) is a link to a [https://xkcd.com/what-if-2/ what if? 2: the book] page on {{xkcd}}.

Apart from promoting the book, the comic also explains why he ended up writing a sequel. After the first book came out Randall was flooded with ''what if?'' questions. Presumable mainly from his readers via e-mail, but his friends and families also started texting him with these questions. Some of these texts are displayed in the comic, but only partially, so none of the six question texts can be read. But where one might think that this would become tiresome, Randall instead tells the readers the opposite: "Honestly, I love it."

He then continues to praise the quality of the questions, mentioning no less than nine examples of what the questions were about. And in the process ensures the reader that planets, including the Earth, will be destroyed multiple times in his new book. At the end he lets the readers know that some of the features of the first book, with short answer sections and disturbing questions (likely not answered), are also included in this book.

He also states that a few of his favorites from the [https://what-if.xkcd.com/ ''What If?'' site] site have been included, so it is not all new material. From the book stores, it seems like he includes his very last online ''What If?'' ({{what if|157|Earth-Moon Fire Pole}}) for instance, which was released on 2018-05-21, almost four years before this comic was released. Also, by the time the book is released, it will be almost four years and four months since the last article on ''What If?''

The final part of the comic is a picture of the book that both makes it clear when the book is released and how to preorder it.

Randall ensured the maximum possible attention to his announcement by placing a [[Countdown in header text|countdown]] in the [[header_text#2022-01-10_-_Standard_text_with_countdown|header]] about three weeks prior to the announcement. This has caused a lot of speculation as to what would be revealed on the day of this comic's release 2022-01-31. The timer was inside a panel at the top right of the xkcd header text next to the standard header text: ''xkcd updates every Monday, Wednesday, and Friday''. Inside the panel a picture began emerging after the first day, but the picture only changed approximately once every four hours. After a few weeks was it certain that it was a plane that was being revealed. And on the second to last day, around day twenty, it was clear that it featured a ''T. rex''-like dinosaur ''en silhouette'' standing on top of the aircraft, apparently trying to eat its way into the fuselage, and it might have been possible to guess the relation to the ''What If?'' sequel. On the day before the announcement on xkcd, however, [[Countdown_in_header_text#Blow_up_by_Amazon|Amazon made visible a preorder page for the book]], so the answer was made clear about a day before Randall had intended. This clearly annoyed users of this page as can be seen in the [[Talk:Countdown_in_header_text|talk page for the countdown]].

Until then, however, there were numerous [[Countdown_in_header_text#Theories|theories]] about the [[Countdown_in_header_text#Countdown|countdown]] and what the [[Countdown_in_header_text#The_picture|image would reveal]] as the image gradually changed throughout the eventual [[Countdown_in_header_text/images|136 frames]].

In the title text, Randall feels that he must clarify the release day (as in [[2562: Formatting Meeting]]), since he has often joked about the way different countries (and people) write dates. He did not use the one version he himself had promoted in earlier comics. He does however give two different versions of the release date: the first is "9/13" in the first panel, which is at least (usually — see below) only readable one way; harder to misinterpret is the more expansive "Sep 13, 2022" in the final panel. A format that he could have used to avoid any confusion is: "the book is released on 2022-09-13," using the international standard as defined in the {{W|ISO 8601}} standard and shown in [[1179: ISO 8601]].

The clarification reads: By 9/13, I mean September 13th, not the 9th day of Jancember, the cursed 13th month that exists between December and January in the transdimensional temporal plane.

Since there are only 12 months in the year, 9/13 actually cannot be mistaken, while 9/12 might be. So there was really no need for this clarification, especially with the last text in the last panel. So this is of course just a title text joke, where he can manage to make a [[:Category:Portmanteau|portmanteau]] of January and December ("Jancember") and then then call this a cursed month as it would be the 13th month if it came before New Year. This comic came out at the end of January, so it could have been at the end of Jancember instead. The number thirteen is seen by many as an unlucky number, so a thirteenth month would be considered cursed by some, or at least unlucky.
In reality, a 13th month can exist in some alternate calendars and is then called "{{W|Undecimber}}".

At the release of this comic, the header changed to promote the website, the [[Design_of_xkcd.com#xkcd_links|xkcd links]] in the top left section of xkcd was changed to promote the book and he made his first [[Blag]] post in more than two years with the [https://blog.xkcd.com/2022/01/31/what-if-2/ What If 2] post.

The [https://what-if.xkcd.com/ what if?] header was also changed to accommodate promotion of the new book; not so strange, seeming as it was based on that blog. A picture is displayed at the top with the book at both ends and this text in between, with the first line taking up the top and the two other lines below, the first in a frame:
:What If? 2
:Preorder now
:On sale 9/13
The entire picture links to the what if? 2 page.

Exactly two months after the release of this promotion comic Randall made another comic about his new what if? 2 book: [[2600: Rejected Question Categories]]. In this he also gives the release day as 9/13, in the title text, although without any mention of the ambiguity of this date format.

==Transcript==
:[Randall, drawn as Cueball, is throwing his arms out as he stands next to a big red book with white drawings on the cover. The cover shows a large passenger plane that has just taken off, as can be seen since the landing gear still has the wheels extended (only one wheel is visible at the middle part and then the one in the front). A Tyrannosaurus Rex has jumped on to the plane and it is biting down on the ceiling of the plane a bit in front of the wings, as if on the back of a prey. The dinosaur has already broken through the ceiling. Below is a jagged landscape with small mountain like peaks in the background. Megan and Cueball are standing on the top of the second of two raised plateaus, looking up at the plane and dinosaur. There is unreadable white text above the plane, then a title beneath the plane, and the authors name below the landscape, and more unreadable text beneath that, all in white. Below the book, there is a small arrow pointing to the right bottom of the book, with a label beneath.]
:Randall: '''Announcement:''' I’m publishing a ''what if?'' sequel!
:Book cover: what if? 2
:Book cover: Randall Munroe
:In stores 9/13, available for preorder now: xkcd.com/whatif2

:[Randall is shown holding up his smart phone in one hand. The screen lights up as indicated with small lines at the top. These point up to at least six SMS texts, each with two lines of text. They are shown in speech bobbles with a small arrow in the bobbles lower left corner. All six are covered partly by either the other five, or by Randall’s head, and none of them can be read in any meaningful way; only parts of sentences or words are clearly visible. The bobbles and the text in them are all drawn in gray. Randall is narrating (not speaking) in this panel, both above the SMS texts, and below.]
:Randall narrating: Ever since I wrote '''''what if?''''', I’ve been flooded with questions.
:Randall narrating: And not just from readers- My friends and family stated texting them to me, too.
:Text 1: Hey, could s.. ele
:Text 2: Hypothe…
:Text 3: If you s… Jupiter…
:Text 4: Could my c… or…
:Text 5: Do you… my car…
:Text 6: If I trie… the sun, would I…
:Randall narrating: Honestly, I love it.

:[Randall is again standing next to his red book talking. There is also a second version of the book lying to the right of the closed book, and this has been opened up to reveal two pages. The text is unreadable and the images are very hard to see, but it seems that two people are standing next to each other on the right page. The image at the top of the left page has been enlarged and shown to the right of the open book. It is an image of the Earth that is being peeled by a potato peeler, which takes off a large peel from the north part of Scandinavia and then goes via Russia into Asia. The title and author name can still just be read on the book,but maybe only because they are already known...]
:Randall: The questions are so good. People have asked about touching exotic materials, traveling across space and time, eating things they shouldn’t, and smashing large objects into the Earth. There are questions about lasers, explosions, swingsets, candy, and soup. Several planets are destroyed-one of them by the soup.
:Book cover: what if? 2
:Book cover: Randall Munroe

:[Zoom in on the top part of Randall speaking on.]
:Randall: Like the first book, '''''what if? 2''''' also features collections of short answers, new lists of weird and worrying questions, and some of my favorite answers from the What if site.

:[Only the closed red book are shown in this panel, in an even larger version than in any of the previous panels. But it is still only the title and the author name that can be read, but in this version these can also be read on the spine of the book. Randall is narrating again, and there are text both above and below the book.]
:Randall narrating: If you want to get it when it’s released, you can preorder a copy at xkcd.com/whatif2
:Book spine: what if? 2 Randall Munroe
:Book cover: what if? 2
:Book cover: Randall Munroe
:Randall narrating: Available Sep 13, 2022

==Trivia==
*This comic came out just a few minutes after the [[Countdown in header text]] ended.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Comics featuring Randall Munroe]]
[[Category:What If?]]
[[Category:Book promotion]]
[[Category:Portmanteau]] 
[[Category:Calendar]] 
[[Category:Dinosaurs]]
[[Category:Comics with cursed items]] 
[[Category:Comics with lowercase text]]

Talk:1529: Bracket

2023-02-13T22:58:45Z

172.70.90.140: Corrections. And a little bit of my (old) thoughts as to how it could have been structured. If the effort was worth it.

Interesting to me that no one has noted the order of the doctors. Doctor Octopus is from a comic, Doctor Manhattan is from a graphic novel and, trying to avoid spoilers here, the atomic bomb plays a key role in the story. The atomic bomb was the product of the Manhattan project (a fact not lost on Alan Moore), and the subject of the movie referenced by the next line, Dr Strangelove ("or How I Learned to Stop Worrying and Love the Bomb"). I can't believe this order is arbitrary. [[Special:Contributions/173.245.48.108|173.245.48.108]] 04:55, 26 May 2015 (UTC)

What's the connection between Rip Torn and Natalie Imbruglia? {{unsigned ip|108.162.238.183}}
:Answer: Her song, Torn: https://www.youtube.com/watch?v=VV1XWJN3nJo-{{unsigned|Stumpy}}
Rip Torn could have a preliminary match with Prof. Lance Rips  {{unsigned|Mitch Marks uchicago|16:34, 25 May 2015 (UTC)|please sign your posts appropriately with the appropriate user and talk page links using <nowiki>~~~~</nowiki>. the original signature was an inexistent template.}}

Any pairings that you'd add, given the opportunity? Personally I always confuse [[wikipedia:Wilson Pickett|Wilson Pickett]] and [[wikipedia:Wilson Phillips|Wilson Phillips]]. [[User:Studley|Studley]] ([[User talk:Studley|talk]]) 08:28, 25 May 2015 (UTC)
[[wikipedia:Will Ferrell|Will Ferrell]] and [[wikipedia:Pharrell Williams|Pharrell Williams]] for me! -{{unsigned|Stumpy}}
Bill Paxton should be followed by Bill Bixby... [[Special:Contributions/108.162.254.92|108.162.254.92]] 09:10, 26 May 2015 (UTC)

How about George Washington and George Washington Carver? and the George Washington Bridge?

At one time, the White House had both a Donald Regan and a Ronald Reagan.[[Special:Contributions/108.162.215.190|108.162.215.190]] 17:14, 25 May 2015 (UTC)

Why do some first round pairings have more than two people? Beyoncé starts at the third round, so it can't be just because of the number of people. There has to be a joke in them but I don't see it. --[[Special:Contributions/141.101.104.176|141.101.104.176]] 08:45, 25 May 2015 (UTC)
:Possibly an in-joke at the NCAA bracket's First Four round. Mister/Fred Astaire/Rogers is a more "traditional" reference to the First Four. [[Special:Contributions/108.162.219.103|108.162.219.103]] 10:32, 25 May 2015 (UTC)
: Beyoncé starts first, before the first round. She's singing the national anthem before the players start competing. She doesn't compete until the third road because she needs time to change clothes since you don't wear the same thing to sing the national anthem as you wear as a competitor. :-) [[Special:Contributions/108.162.215.189|108.162.215.189]] 04:22, 9 June 2015 (UTC)

Perhaps it's worth adding to a trivia section that (assuming every person/thing has an equal chance of winning every matchup, Beyonce has the highest odds of winning (1/32 = 3.125%) while Kurt Russell, Russell Crowe, Russell Brand, and Russell Simmons are all tied for having the worst starting odds (1/256 = .391%).[[Special:Contributions/108.162.219.91|108.162.219.91]] 09:19, 25 May 2015 (UTC)

I may be worth mentioning that the bracketing trees resemble hierarchical clustering dendrograms in which some string similarity metric was used as a distance function. {{unsigned ip|141.101.91.7}}

Although the comic is formatted as a tournament bracket, there are hints that it is in fact a dendrogram based on string similarity, in a similar way to how trees of evolutionary relationships between proteins are formed. We see this especially in the "Russell" group where there is equal similarity between any name containing "Russell" and so that group is not resolved into two separate forks. If readers wish to recreate such an analysis for themselves they can take the text on [http://pastebin.com/DRqjaDHH here] paste it into a [http://www.ebi.ac.uk/Tools/msa/clustalw2/ multiple sequence aligner], press Submit, then after processing click Phylogenetic Tree and scroll down. [[Special:Contributions/141.101.99.74|141.101.99.74]] 12:46, 25 May 2015 (UTC)

Somewhat disagree. There is no "string similarity" between domino and checker. The connection between the names seems to be that there are games named Dominos and Checkers. They would not be together if it was based on strictly on string similarity or generated automatically by software without human intervention.[[Special:Contributions/108.162.215.190|108.162.215.190]] 17:09, 25 May 2015 (UTC)

Is there any significance to the number of entries? 52 on the left side but only 51 on the right? {{unsigned ip|108.162.216.84}}

Should it be noted at all that Chubby Checker's name was inspired by Fats Domino? [[Special:Contributions/108.162.215.121|108.162.215.121]] 21:05, 26 May 2015 (UTC)Akiosama

;Title text
Changed the reference of the Title Text from Doctor Who (who is already listed in the comic) to Dr. Dre, as the phrasing of the Title Text seems like a very direct reference to the 2001 song "Forgot About Dre." {{unsigned|Conquistador}}
:Probably would have been better to add it as an option since we're clearly far from certain -{{unsigned|Stumpy}}

Why not Zoidberg? --RhyvenNZ [[Special:Contributions/198.41.238.41|198.41.238.41]] 09:55, 25 May 2015 (UTC)

Pretty sure Doctor Who is covered by "The Doctor". He doesn't go by "Who" in the show. He's just the Doctor. I think the missing doctor is House. {{unsigned ip|108.162.215.127}}

Dr. Pepper, maybe? Does "staring" or "forgotten" have to do with it? {{unsigned ip|108.162.237.156}}

Whatagainnow? {{unsigned ip|108.162.222.178}}

Dr. Oz? Dr. Phil? Dr. Watson? Dr. Kavorkian? Dr. Seuss? Wasn't there a famous literary work, The Lost Island of Dr. Moreau? I agree that Dr. House and/or house calls could be a missing candidate for the bracket. But then, there are a ton of 'Sirs' that didn't make the list.  {{unsigned|GAKDragon||please sign your posts appropriately with the appropriate user and talk page links using <nowiki>~~~~</nowiki>}}
:[https://en.wikipedia.org/wiki/Dr._Teeth_and_The_Electric_Mayhem Doctor Teeth!] [[User:Jarod997|Jarod997]] ([[User talk:Jarod997|talk]]) 13:50, 25 May 2015 (UTC)
:Pete Docter? [[Special:Contributions/108.162.249.191|108.162.249.191]] 11:27, 26 May 2015 (UTC)

Or is "The Doctor" http://en.memory-alpha.wikia.com/wiki/The_Doctor? {{unsigned ip|108.162.215.108}}
:The Doctor is already in the bracket. --[[Special:Contributions/141.101.99.49|141.101.99.49]] 10:40, 25 May 2015 (UTC)

It's Doctor House - definitely and finally! {{unsigned|Raydleemsc}}

Definitely "Doc" Brown: http://en.wikipedia.org/wiki/Emmett_Brown {{unsigned ip|108.162.221.171}}

::It's clearly Dr. Doolittle. Can't imagine why no one has realized this yet. {{unsigned ip|108.162.238.193}}

Could the joke simply be "there are way too many famous doctors", so even though it's arguably the most numerous category in the bracket, some are still "forgotten"? {{unsigned ip|108.162.254.164}}

Probably not talking about doctor who, however he could be referencing The Silence, which is a an alien race, on that show, which you immediately forget about after losing sight of it. {{unsigned|KroniK907}}

I immediately thought of Amy's wedding in Dr Who S5Ep13 where she needed to remember the doctor to bring him back. Too obscure? [[User:Blu003|Blu003]] ([[User talk:Blu003|talk]]) 13:07, 25 May 2015 (UTC)
:Hardly. You want obscure, try The Doctor's granddaughter. Yep, he had/has one. --[[Special:Contributions/108.162.237.144|108.162.237.144]] 13:41, 25 May 2015 (UTC)

:Dr. Martha Jones, from Doctor Who? The Doctor Donna? Even the companions on the show are Doctors. [[Special:Contributions/108.162.222.178|108.162.222.178]] 03:55, 26 May 2015 (UTC)

I'm disappointed that no one thought of Julius "Dr. J" Irving, http://en.wikipedia.org/wiki/Julius_Erving given the similarity to a Basketball tournament style graphic. [[Special:Contributions/108.162.219.165|108.162.219.165]] 17:35, 3 June 2015 (UTC)

When this comic first went up, I emailed xkcd the same day to say that "Dr. Quinn, Medicine Woman" had been missed out. -- @WPSCrimsonshade 20:48, 12 April 2016 (UTC)

Y'know, I can't help but feel that this is a little to bland and unfinished for xkcd. I'm willing to bet that the picture updates with winners. May be sorely disappointed though. [[Special:Contributions/108.162.219.119|108.162.219.119]] 15:02, 25 May 2015 (UTC)

Can't help but feel that there's a better way to lay this explanation out, but I haven't been able to come up with it. Maybe some sort of table listing all the different groups, with people allowed to be in more than one group? [[Special:Contributions/141.101.98.232|141.101.98.232]] 15:18, 25 May 2015 (UTC)

:I personally don't love the large listing of people. It is a bit bland, but more importantly, it doesn't really show the linkages between the participants (though most people ought to be able to figure out these overt links Jeff Gordon... Jeff Daniels... it doesn't need explanation. That said, the current format doesn't quite demonstrate the chain-link nature of some matchups like:
:*'''Body''' Shop
:*'''Bath''' and '''Body''' Works
:*Bed '''Bath''' & '''Beyond'''
:*'''Beyond''' Thunderdome
:* '''Beyon'''cé.
:I wouldn't mind a format with that kind of bolding. I think that shows the chain of links better than the first to being grouped "businesses with the word "body" and the second two "things with the word beyond" and "Beyoncé" separately. Similarly, Jeff Daniels belongs to both the "Jeff"s and the "J. Daniels"es. [[User:TheHYPO|TheHYPO]] ([[User talk:TheHYPO|talk]]) 15:48, 25 May 2015 (UTC)

I wouldn't categorize Fats Domino and Chubby Checker (just) as games. Given that they're directly under Ryan Adams and Bryan Adams, I'd have identified them as 50's singers, with some physical similarities. [[User:KenWhitesell|KenWhitesell]] ([[User talk:KenWhitesell|talk]]) 16:17, 25 May 2015 (UTC)

Agree. I put in the identification about games without knowing who Chubby Checker was.[[Special:Contributions/108.162.215.190|108.162.215.190]] 17:09, 25 May 2015 (UTC)
:Then you are one of today's lucky 10,000! [[1053]] {{w|Chubby Checker}}[[User:Zeimusu|Zeimusu]] ([[User talk:Zeimusu|talk]]) 21:32, 25 May 2015 (UTC)

;celebrity deathmatch

This reminds me of Celebrity Deathmatch. Then have:
* Charles Manson vs. Marilyn Manson
* Backstreet Boys vs. Beastie Boys
* The Three Stooges vs. The Three Tenors
* Kevin Costner vs. Kevin Smith
* John Cusack vs. John Malkovich
* David Blaine vs. David Copperfield
* Corey Feldman vs. Corey Haim
* Jack Black vs. Jack White

https://en.wikipedia.org/wiki/List_of_Celebrity_Deathmatch_episodes {{unsigned|Bart9h}}

Who is Jeff Gordan? There's an extremely famous NASCAR driver named Jeff Gordon, but I don't know of a Jeff Gordan. Significant or typo? [[Special:Contributions/108.162.238.182|108.162.238.182]] 16:07, 25 May 2015 (UTC)

Where is Colin Furze? And Arnold Swarzenegger? And all other people I never heard of? -- [[Special:Contributions/141.101.104.116|141.101.104.116]] 21:12, 25 May 2015 (UTC)

What about my favourite triple: Robbie Williams, Robin Williams and Robyn Williams? -- Ian N. {{unsigned ip|162.158.3.11}}

And who can forget Dermot Mulroney and Dylan mcDermott?[[Special:Contributions/108.162.254.164|108.162.254.164]] 09:34, 26 May 2015 (UTC)

This is a major "Get Out Of My Head, Randall" comic for me. The day before this comic was posted, my friend and I were discussing a "Hunger Games" type simulation being done on 8chan involving loads and loads of characters across genres, and he had asked me about the probability of a particular match-up occurring with a desired outcome. It led to a long and detailed math conversation. The original match-up has been bumped out of existence, but [http://i.imgur.com/ESeMXOI.jpg this image] still lives on. Appropriately, the comic was posted on my birthday. 2spooky4me. [[Special:Contributions/108.162.210.177|108.162.210.177]] 06:01, 26 May 2015 (UTC)
: It reminds me of a song - The Ultimate Showdown of Ultimate Destiny: https://www.youtube.com/watch?v=4WgT9gy4zQA [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 13:59, 1 June 2015 (UTC)

I would have added Amanda Plummer. Will confuse Plummer with Palmer any day. [[Special:Contributions/108.162.249.191|108.162.249.191]] 23:19, 25 May 2015 (UTC)

Just as well we don't have to deal with Paul Ryan - Ayn Rand - Rand Paul...Ron Paul, Les Paul, Saint Paul, John Paul, John Paul Jones...Wolfgang Pauli, Pollyanna...[[User:Taibhse|Taibhse]] ([[User talk:Taibhse|talk]]) 11:41, 26 May 2015 (UTC)

Surprised Tommy Lee and Tommy Lee Jones aren't there. [[Special:Contributions/108.162.238.124|108.162.238.124]] 12:31, 26 May 2015 (UTC)

Personally I think its pointless having the probabilities listed as if they mean something. We don't know what the competition is, but its almost certain that the result of say 'The Body Shop' vs Beyonce is '''not''' going to be a 50:50 probability. --[[User:Pudder|Pudder]] ([[User talk:Pudder|talk]]) 15:41, 26 May 2015 (UTC)

Are the probabilities listed half what they should be? [[Special:Contributions/108.162.237.165|108.162.237.165]] 17:16, 26 May 2015 (UTC)

Mister/Fred Astaire/Rogers also refers to "Mr. Rogers" of Mr. Rogers Neighborhood. I don't think there's a reference for the last combination, "Mister Astaire", other than to Fred Astaire.

Kevin Kline vs. Calvin Klein would also have made a good match. --[[Special:Contributions/108.162.229.88|108.162.229.88]] 20:15, 26 May 2015 (UTC)

What about Johnny Cash v Johnny Paycheck? To which one could then add Johnny Carson v Johnny Unitas v Johnny Depp? [[Special:Contributions/173.245.48.98|173.245.48.98]] 16:36, 30 May 2015 (UTC)

----

;Cory Doctorow described as "real person"?

Well, yeah, but he's famous for some actual things. Perhaps "blogger and author" would better describe him. [[Special:Contributions/141.101.98.143|141.101.98.143]] 22:56, 26 May 2015 (UTC)

What about the Silents from series 6 of Doctor Who?
[[Special:Contributions/108.162.250.144|108.162.250.144]] 04:20, 27 May 2015 (UTC)

I'm disappointed John McCarthy isn't there. [[Special:Contributions/173.245.52.127|173.245.52.127]] 12:46, 27 May 2015 (UTC)

While I'm of the opinion that the doctor he is "forgetting" is CLEARLY Dr. Dre, I can see why we put the rest of the doctors on there since we don't know for sure. However, I'm removing the multiple long, rambling, and unnecessary references to The Doctor since he's already listed. [[User:Ul2006kevinb|Ul2006kevinb]] ([[User talk:Ul2006kevinb|talk]]) 16:43, 27 May 2015 (UTC)

I don't agree with the removal to be honest. I agree it got a bit long-winded, but the Doctor still could be either one of the two (Doctor Who and ST:Voyager). To then ask the question "Doctor Who?" would be a very valid joke/ question imho. Also, the list is now again referring to him as "Dr. Who", whereas his name is simply "the Doctor". [[Special:Contributions/141.101.75.107|141.101.75.107]] 01:39, 28 May 2015 (UTC)

Dr. Livingstone, I presume? --[[User:Eraoul|Eraoul]] ([[User talk:Eraoul|talk]]) 07:28, 6 June 2015 (UTC)

This description probably needs to be updated with the factoid given in https://twitter.com/xkcdbracket/status/612221512133816320, if it can be verified [[Special:Contributions/141.101.99.87|141.101.99.87]] 12:34, 20 June 2015 (UTC)

It should be updated with "[https://docs.google.com/forms/d/1Q6Prudh-yLx_wV5NgR9_C35ZS5S8ZRM7BBWgfKET43k/viewform?c=0&w=1 The Doctor, alien explorer of time]" [https://twitter.com/xkcdbracket/status/611994813488099328] [[User:Dorus|Dorus]] ([[User talk:Dorus|talk]]) 09:29, 24 June 2015 (UTC)

Am I the only one who thinks that the Transcript shouldn't be updated to match the unofficial Twitter Bracket feed? It should be on the page, but the transcript section should be related to the comic as it appears on xkcd.com only. --[[User:Pudder|Pudder]] ([[User talk:Pudder|talk]]) 09:47, 20 July 2015 (UTC)
:No that is correct. The transcript is always only what occurs on the original comic at xkcd. I have corrected the error. If someone wish to do a trivia section on the result they should feel free to include that. I have linked to the twitter account in the explanation as it is interesting since Randall links to it on xkcd. The trivia entry could be linked from that paragraph. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 12:43, 28 July 2015 (UTC)

:: Two comments: First, if that is the case, then several pages need to be updated; the fact that wetriffs.com was created in response to [[305: Rule 34]] is not "in the comic itself" nor is the fact that Randall was responsible for (another example, [[1485: Friendship]] triggered a movement to delete the wikipedia Bromance article - and a third example [[1190: Time]] triggered multiple twitter followings and web communities that are referenced in the explanation); if we purge #xkcdbracket from this, we need to purge all of those too for consistency. Second, transcript is what happens in the comic, but explanation includes background and consequences of comic; this consequence was featured by Randall for several weeks, if that's not canon, then nothing is. I have moved the explanation to trivia as requested, but filled in the victor. If you want to remove, please discuss first and also clean up the other pages I just listed. [[User:Djbrasier|Djbrasier]] ([[User talk:Djbrasier|talk]]) 15:43, 30 July 2015 (UTC)
::: More pages that need to be purged of references to internet consequences and followings inspired by comics: [[1185]] inspired someone to make stacksort, [[239]] inspired people to photoshop capes onto Cory Doctorow, [[Little Bobby Tables]] refers to a website created (not by Randall) to teach people to properly sanitize database inputs, [[1167]] inspired wikipedia vandalism that temporarily caused a page to be protected (as did [[1193]]) [[576]] inspired someone to create a service that does what is described, I'm sure that given 10 more minutes I could find 10 more examples. '''None''' of these were featured as banners on the xkcd.com page by Randall and yet '''all''' are in explainxkcd.com. Please remove all of those references from explainxkcd.com (as well as fixing [[305]], [[1485]], and [[1190]] '''before''' deleting the reference to #xkcdbracket on this page. [[User:Djbrasier|Djbrasier]] ([[User talk:Djbrasier|talk]]) 16:04, 30 July 2015 (UTC)
::::I do not know what I (or Pudder) wrote to get this response from Djbrasier. I agreed that the transcript should not be updated to match the brackets on the twitter account, and that the results written in the transcript (full results with results of all individual matches, that I removed when updating the transcript to look more like the comic) should be in the trivia if anyone wished them to be on this page. I do not think there is anything wrong (and also wrote that) with linking to the bracket. I actually linked my self to that bracket on twitter. And I don't even think the link should be a trivia item as it is important since Randall links to it. But the results (apart from the final, which is fine to have in the main explanation) is not for the explanation and definitely not for the transcript. So all the other pages and talk you write about purging explain xkcd from what happens because of xkcd has nothing to do with the subject here. And of course these thing should be a part of this page. So we agree on that! --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 09:18, 31 July 2015 (UTC)

NOOOOO!! I bet everything on Scallions![[User:Saspic45|Saspic45]] ([[User talk:Saspic45|talk]]) 11:14, 18 June 2016 (UTC)

No love for Sandra Day O'Connor and Sinead O'Connor? They're practically the same person!
[[Special:Contributions/162.158.62.243|162.158.62.243]] 00:59, 29 March 2018 (UTC)My winner is George Orwell.[[Special:Contributions/162.158.62.243|162.158.62.243]] 00:59, 29 March 2018 (UTC)

can someone please move gene simmons up to be with the rest of the simmons in the table? I don't know how to do that.
[[Special:Contributions/172.70.111.75|172.70.111.75]] 16:38, 13 February 2023 (UTC)
:(Moved Discussion item to bottom...)
:Gene Simmons has to 'match' both the Simmonses (above) ''and'' the Gene (below), so I can't see what sort of retabling would help here. ((Had considered two or more columns for the match-strings, that overlap like bricks, but sideways...) Personally, I would leave it. From your comment, I thought that he was misplaced (or that Randall had somehow used him completely outwith the bracketting area that he quite rightly did).
:As to ''how'', you would need to juggle "rowspan=" table parameters (and ensure you don't make that shuffle across lower lines of table, into which it intrudes) analogously to how you'd do it in HTML, but in wikimarkup form of course. I'd advise using Preview a lot, though, if you ever try it. Tables break '''''so''''' easily, even if you're used to them, and you don't want to make a record of all your mistakes along the way. ;) [[Special:Contributions/172.70.162.56|172.70.162.56]] 22:53, 13 February 2023 (UTC)

1889: xkcd Phone 6

2023-02-10T07:53:39Z

172.70.90.140: /* List of features (clockwise from center/top) */ Good catch, but better marked-up version. And further obvious format fixes while in the exitor.

{{comic
| number = 1889
| date = September 13, 2017
| title = xkcd Phone 6
| image = xkcd_phone_6.png
| titletext = We understand your privacy concerns; be assured that our phones will never store or transmit images of your face.
}}

==Explanation==
This is the sixth entry in the ongoing [[:Category:xkcd Phones|xkcd Phone series]], and once again, the comic plays with many standard tech buzzwords, and horribly misuses all of them, to create a phone that sounds impressive but self-evidently isn't to even the most ignorant customer. Its number appears to be 6, VIII, 10, X, 26, ''and'' 1876. The same phone having six different version numbers at once is clearly ridiculous. The previous comic in the series [[1809: xkcd Phone 5 ]] was released 7 months before this one and the next [[2000: xkcd Phone 2000]] was released 8 and a half months later.

This comic was released the day after Apple announced their new {{w|iPhone 8}} and the higher-end {{w|iPhone X}} (pronounced iPhone 10) with facial recognition features.

===List of features (clockwise from center/top)===

; Front camera (centered for eye contact during video chat)
: A front camera has become a common feature of smartphones. The camera lens is located on the same side of the phone's case as the main screen, making it possible to capture the image of the user's face looking at the screen and display the interlocutor's face on the screen simultaneously, enabling video chat. However, as the camera is usually located above the screen, when the user looks at the displayed image of the other person they direct their eyes at the center of the screen and not at the camera's lens. This makes it appear on the other end of the chat as if the person talking was looking down and not making eye-contact, which can be an uncomfortable situation for many people. For this reason, professionals involved in movie or TV-making, like actors or reporters, are trained to look straight into the camera's lens while talking, which creates impression of looking straight at the viewer's face. During a video chat, however, looking into the lens of an above-screen camera does not allow one to see the interlocutor's face clearly because it is then in the peripheral field of vision.

: To solve this conundrum, Randall proposes locating the camera lens right in the middle of the screen. The user looking at the the other person's face on the screen would then also be looking at the lens, creating an impression on the other end of the chat that they are looking straight at the other person. This is absurd, since the lens would then take place of some of the center pixels of the screen, which would probably mean that it could not display the center part of the captured image of the other person's face. This could include features such as eyes and/or lips, which play an important part in non-verbal communication. Locating the camera lens in this way would probably also interfere with the touch-screen function. It would probably make other applications on the phone difficult to use, since virtually no user interface is designed to accommodate a blind spot in the center.

: The idea of having the camera in the middle of the screen is only currently absurd, however, as advances in technology may eventually enable such a feature to work without disturbing the appearance or function of the phone's display, unlike the visual disturbance clearly indicated in the comic. For instance, previous technological advancements have improved the functionality of the display, starting with adding touch sensing. The touch sensitive hardware of the phone is located in a thin layer above the hardware, that generates the image for the display, and capacitive touch sensing technology is less obtrusive than previous resistive sensing. While it has yet to be released to market, certain manufacturers are aiming to place a phone's fingerprint reader underneath the screen, for seamless functionality. Although it may be difficult at this point, figuring out a way to have a camera capture images through the array of pixels on the screen is not completely beyond imagination.

; Full-width rear camera
: Historically, there has been an 'arms race' among phone manufacturers to increase the 'size' of the rear camera, in terms of the number of pixels they can capture. This is not typically accompanied by equivalent increases in physical size, though. Phone cameras tend to have lenses which are quite small, and round or square -- measuring the same in width as in height. On this phone, the 'full-width' lens appears to be a long, thin strip, like an oval or rectangle shape. This could allow the camera to gather a lot more light, potentially working in low light situations. However the lens would be more vulnerable to damage and dirt. Unless a very large sensor was used, focusing the image could be a problem, since cell phones are typically not very deep.

; CDC partnership - phone automatically administers seasonal flu vaccine to cheek every year
: U.S. {{w|Centers for Disease Control and Prevention}} is a government agency tasked with addressing public health concerns, such as infectious diseases, including seasonal flu. A common way of limiting the spread of an infectious disease is {{w|Vaccine|vaccination}}, which most often involves administering a specially prepared vaccine via an {{w|intramuscular injection}}, though researchers have investigated other delivery systems, including aerosol, or microneedle injection. Uptake of vaccination is often poor, and many governments routinely use various different campaigns and techniques to try to encourage more people to get themselves vaccinated.

: This feature implies that the phone would automatically perform some form of injection once a year, administering a vaccine via a small aperture while the user is holding the phone to their cheek during a call. However, the placement of this component is dubious, as it would line up with the user's ear, rather than their cheek, during a phone call. It may be designed to detect the fraction of a second during which your cheek would be in the appropriate position (perhaps after a phone call, as you may be dropping the phone from your ear), and administer it at that moment; this would conveniently prevent disturbances to a majority of conversations.

: A further absurdity to this feature is that the vaccine is different every year, in order to account for various mutations causing different, and typically new, strains of the virus, which is the reason it has to be administered yearly. The CDC bases the combination of strains on a best-guess of what will be the most significant strains in circulation over the upcoming year, so in order to have the current year's vaccine, the user would have to physically load the new version into the phone for later administration, or there would have to be a mechanism to synthesize the concoction on-board the phone, and an associated logistics framework and digital standards for OTA delivery of specifications for the year's vaccine.

; 12-function
: Most smartphones can be used for more than twelve different things.{{Citation needed}} However, this may refer to the twelve basic functions of algebra (identity, squaring, cubing, square root, logarithm, exponential, reciprocal, sine, cosine, greatest integer, absolute value, and logistic), or the twelve function keys on a modern keyboard (more than the ten on the original IBM PC keyboard). Alternatively, it may be a reference to calculators: basic models are sometimes referred to as four function calculators (addition, subtraction, multiplication and division), and complex scientific calculators may advertise 250 or more functions.

; Dishwasher safe
: Waterproofing has become a much-pushed feature of many recent smartphones, with manufacturers competing on the claimed resilience of their models. A phone that was truly dishwasher safe would be ahead in this race, as it would have to be able to withstand high-pressure jets of water, high temperatures, and caustic effects of detergent over significant periods. This is often listed as a selling point of items used for preparing, serving, or storing food, such as plastic containers or crockery, which a normal person might want to clean using a dishwasher, but it seems excessive for phones, which are rarely cleaned with anything more than a quick wipe, and most people would not intentionally attempt to clean in a dishwasher.

; GPS transmitter
: Many smartphones have a receiver for the {{w|Global Positioning System}}, which allows a phone to compute its position based on signals from the constellation(s) of GPS satellites. However, a device with a "GPS transmitter" would broadcast signals that would interfere with the GPS receivers of all devices nearby. This might be used in some form of differential GPS, broadcasting signals from a known location to allow more precise determination of other locations, or such a system might be used to confuse or control devices, such as drones, which navigate using GPS.

; 3-G acceleration
: This is a mixture of three unrelated concepts with similar names. In computer graphics, "{{w|Graphics processing unit|3-D acceleration}}" refers to GPU hardware that speeds up handling of three-dimensional data, such as shapes rotating in space. In physics, "3 Gs of acceleration" refers to speed increasing at a rate of 3 times the acceleration of Earth's gravity, or approximately 30 m/s². In cellular networks, {{w|3G}} refers to a standard for data communication. GPUs, accelerometers, and compatibility with 3G networks are all normal features of modern smartphones. "3-G acceleration", however, is not a real term, and doesn't describe any meaningful feature of a phone. It appears to suggest that either the phone is capable of self-propelling with 3 Gs of acceleration, which doesn't seem particularly useful, or, perhaps more feasibly, that it has some way of increasing the data transfer rate over a 3G connection.

; Portable, solar-heated
: Portability is pretty much the entire point of using a ''mobile'' phone, so advertising portability is rather redundant. Solar ''power'' charging could be a very useful feature on a phone, but solar ''heating'' usually applies to plumbing, where a water tank is heated by the sun and used to supply hot water to taps. Technically, as the sun heats up everything it shines on, the phone is in fact solar heated. However, since avoiding overheating is a particular challenge in smartphone design, deliberately capturing solar energy simply in order to heat the device would seem rather counter-productive.

; Pore-cleaning strip
: Pore-cleaning strips are sticky strips designed to be applied to the skin and then pulled away to remove dirt and oils from the pores, with the intention of reducing spots and improving the complexion. The location shown for this feature would be inconvenient and irritating, as it would come into contact with the face every time the phone was held to the ear to make a call; something sticky on that location would be very annoying for clean-shaven people and extremely painful for anyone with facial hair. It would probably also result in that strip of the screen becoming obscured by an accumulation of facial gunk. Pore strips have been mentioned before in [[777: Pore Strips]].

: This may act as a sensor for the ''Shroud of Turin-style facial transfer unlock'', whereby the phone would collect the dirt, oils, and microflora from the user's face when it is pressed against the phone, and use it to verify their identity.

; Maximum strength
: Medicines are often sold as "Maximum strength", usually indicating that they contain the highest dose of active ingredients allowed by law, or allowed without a prescription. For phones, there are sometimes "hardened" or "ruggedized" versions, which are designed to survive harsher environmental conditions, such as surviving drops and collisions, excessive water, dust, etc. ''Maximum strength'' here could indicate such a "ruggedized" phone, though this would be hard to achieve with a screen that extended past the edges.

; Never needs sharpening
: Phones do not need to be sharpened in the first place.{{Citation needed}} This is a feature more likely to be found in a knife advertisement -- the slogan is infamous for hawking knives that ''cannot'' easily be sharpened, like a serrated blade -- or a mechanical pencil. Since the screen goes past the edge, it might be sharp enough to cut through things, much like a knife, though the phone would be unsafe to carry and handle if that were the case.{{Citation needed}}
:Might also refer to sharpening the camera, which usually means adjusting the lens till an object is in focus. Most phones have autofocus and rarely need to be manually sharpened.

; Can survive up to 30 minutes out of water
: This is a play on the common IP-rating of water resistance, which is typically rated for submersion to a rated depth for 30 minutes. A phone which could only be used or carried for 30 minutes before it needed to be immersed in water would be rather inconvenient, although the phone short circuiting would likely not be an issue, as the phone is "dishwasher safe."

: Alternatively, either this phone's target market could be whales, dolphins, or other marine life, such as octopodes, or the feature could be optional. While such a feature would prove to be extremely useful for aquatic customers, the "solar-heated" feature would undoubtedly be inhibited significantly as water depths increased.

; Exclusive Audubon Society app identifies birds and lets you control their flight
: The {{w|National Audubon Society}} is a non-profit organization dedicated to the conservation of nature, and mainly of birds, which also organizes open {{w|birdwatching}} events. There are apps that attempt to identify bird species, for example, from a [https://play.google.com/store/apps/details?id=com.labs.merlinbirdid.app&hl=en_GB photo] or [https://play.google.com/store/apps/details?id=com.isoperla.birdsongid&hl=en_GB audio recording] of a bird made by the smartphone itself, though the Audubon Society's [https://play.google.com/store/apps/details?id=com.audubon.mobile.android&hl=en_GB own app] does not offer anything this interactive. An app allowing you to control the bird's flight would be way cooler and might work using the built-in GPS transmitter, confusing their navigation systems. However birds do not use GPS to navigate,{{Citation needed}} and it would fly in the face of the Audubon Society's core activity. This is a reference to {{w|Unmanned_aerial_vehicle|drones}} (which could be thought of as artificial "birds") which are often controlled by a smartphone app. This may also be a reference to [[1425: Tasks]], in which an app that can recognize if a bird is on camera is proposed.

; Extra screen
:Some phones advertise an additional display or display mode, often giving access to basic information, such as battery level and notifications without needing to activate the main screen function. Typically, this would be a low-power mode of operation of the normal screen, or else a form of display on another surface of the phone, such as the side or rear. Here, it seems to be an oddly shaped rectangular extension on the bottom of the main screen. This may have been added to make up for the loss of screen estate due to the center camera.

; Wireless charging port
:A port for {{w|Inductive_charging|wireless charging}} is an oxymoron, since wireless charging has no wires and thus has no need for a port, unless it is required for fuel for a fuel cell (see clean coal, below). This may be a jab at Apple's removal of the headphone port from their previous phones.

; Safe for ages 6-8 months, 10 months, 18 months-3 years, and 12 years and older
:Usually an item is deemed safe for a particular age or older, or (in the case of toys) is recommended for a particular age range. This is unusual in that it's a hodge-podge of age ranges with no apparent reason why some ages are safe and others are not. It may be a parody of drug commercials that list several age ranges for which the drug had to be separately approved.

; Screen goes past the edge
:A parody of the trend of "edge to edge" displays in recent generations of smartphones, or phones whose screens curve partway around the edge of the phone. In this case the screen is wide enough that it ''could'' curve partway around the edge, except the spillover does not actually form to the curves, resulting in a screen that is wider than the body of the phone. If the spillover is rigid, this would make the phone rather uncomfortable to hold, and the spillover is at risk of chipping off.

; High thread count CPU
:A {{w|Thread_(computing)|CPU thread}} is a task the CPU performs. Several threads may share memory, making them a process. Threads are meant to run in parallel and the operating system distributes the workload on the available hardware execution units. These execution units are sometimes called hardware threads, especially when there is more than one per processing unit (or core). For example, the Intel Core i7 7700 is considered a 4-core, 8-thread CPU. The vague "high thread count" statement could make sense in this context, however, it is most likely a joke about bedding, where it is an actual selling point; the thread count of a textile signifies the density of fibres in the material, and a high thread count is an indicator of a high quality fabric.

; Shroud of Turin-style facial transfer unlock
:The {{w|Shroud of Turin}} contains an image of the body and face of a man, originally believed to be {{w|Jesus Christ}}, before the Shroud was found to be 1200 years too young. Some theories suggest the image was created by interaction with or transfer from the body that was wrapped in the shroud. Presumably, to unlock this phone, the user would have to physically {{w|facepalm|press their face}} against the phone, the way the Shroud-Man's image was allegedly transferred to the shroud. This is probably a reference to the iPhone X's FaceID unlock, which uses a ''photograph'' of your face, augmented with spatial information, to unlock itself, and which had attracted [https://www.wired.com/story/iphone-x-faceid-security/ significant criticism] immediately before this comic came out.

; Fonts developed by NASA
: This may be a reference to many advertisements that claim that their product uses technology developed by NASA in an attempt to make it seem more impressive. NASA technology does often tend to be quite strong and advanced, as they claim at their [https://spinoff.nasa.gov/ spin off] website. Between 1975 and 1992 NASA used the {{w|NASA insignia|"worm" logotype}} in its insignia; it was a special font that omitted the horizontal bar in the capitalized letter A. However, it would not be particularly impressive to use this, since fonts have very little to do with NASA's core operations,{{Citation needed}} and it potentially implies that it would not support many other common, and perhaps more readable, fonts.

: This may also be riffing on the {{w|Writing_in_space|urban legend}} that NASA invested vast amounts of research in developing a pen that could write in space, rather than just using a pencil.

; Includes applicator
: This is found on the packaging for many products, such as tampons, cosmetics, and paints. An applicator for a phone would be absurd, since the phone cannot be applied, spread, inserted, or attached to something else. However, this may be referring back to the aforementioned yearly vaccine.

; Burns clean coal
: Clean coal is coal that is burned so that it does not give off as much soot, sulphur dioxide, nitrogen oxides, mercury, or other pollutants as "normal" coal, or methods of burning coal that give off relatively less pollutants. This may be advertised by energy companies trying to appear to be using clean energy, due to pollution concerns. Coal burning power plants are usually quite large, so a traditional coal fired thermal-electric plant in a cell phone would be absurd. {{w|Fuel cell}}s, which produce electricity by oxidizing some fuel, can be small enough to fit in a cell phone, but they do not typically burn coal. The cordless charging port might be a receptacle for refueling the phone, using liquid or a fuel cartridge.

; Pre-seasoned
:Pre-seasoned typically refers to cast iron cookware which is ready to use out of the box, as opposed to needing to season it with oil and heat. It can also refer to packaged meats which are ready to cook without needing to be seasoned with herbs and spices, or timber that has been dried and is ready for use. A more technical definition of 'seasoning' means operating devices, usually calibrated standards or battery cells, for a while in the factory, to make sure the device meets constant performance requirements without deviating or diminshing too much. In this sense it could apply to the battery of the phone.

; Broad-spectrum SPF 30
:The xkcd phone somehow gives a {{w|sunscreen|sun protection factor}} (SPF) 30 level of protection from sunlight, meaning that it blocks all but 1/30 of skin-burning UVB radiation from sunlight, though it is not clear whether it is the user or the phone itself which is protected. Phones do not typically require protection from sunlight.{{Citation needed}} On the other hand, if, when placed between the user and the sun, the phone allows >3% of the radiation through, this would be remarkably more translucent, and therefore less effective, than most phones (which allow much less than 1% of UVB, or any other visible or near-visible wavelength, through). It would also be an inefficient method of protection, since it would only be able to protect a relatively small patch of skin.

; College-ruled
:College-ruled is a style of notebook paper having narrower than normal lines, in order to fit more text per page. That the phone is college-ruled suggests that there are lines permanently displayed on the screen, which could obscure any images on the screen, and make any text that doesn't line up with the lines hard to read. Defective screens can show similar patterns; for example, the iPhone 6 "touch disease" causes regularly spaced vertical lines to appear on top of the screen. Here, it is possible that the manufacturer is trying to pass off screen defects as features.

; Sterile packaging
:Useful for medical supplies, less so in a phone. There are numerous studies and resulting 'news' articles looking at the number of bacteria, fecal samples, and so forth, that can be found on the typical phone, typically with a sensationalist take on how you will be 'shocked' to discover this. However, sterile packaging would do little to counter this, since most of this contamination is accumulated after the user removes the phone from the packaging and begins using it.

; Radium backlight
:The discovery of the radioactive element radium sparked a brief fad in which manufacturers of consumer products began coating them with a paint containing radium and a radioluminescent substance, such as zinc sulfide, which converted the radiation from the radium into visible light. In particular, some clock and watch makers painted the faces or hands of their timepieces, allowing the time to be read at night without an external power source for the light. However, it was eventually realized that regular exposure to radium could result in radiation poisoning, particularly for the workers assembling and painting the products. A radium-based backlight would therefore be both potentially dangerous (especially for an object carried on one's person much of the time) but also largely useless, as the radioluminescent light is rather dim compared to conventional phone back lights.

; 4K pixels (50×80)
:"4K" typically denotes a screen with a width of ~4000 pixels, such as 4K TVs, which have 3840×2160 pixels, or about 8.3 million pixels total. That would be an outstanding resolution for a cell phone. Here, however, the "fine print" in parentheses clarifies that 4000 is actually the total number of pixels, not the width, which would be remarkably low resolution for a smart phone. As a comparison, the old Commodore VIC-20, with a resolution of 176 × 184, would have over 8 times the pixels of this phone. It is more comparable to the screen resolution of the sturdy Nokia 3310, which boasted a total of 4032 pixels, positioned 84 × 48.

===Version===
In the caption below the phone [[Randall]] presents many different version numbers:
*The number 6 is in correct order of all the xkcd phones
*The {{w|Roman numerals|Roman numeral}} VIII refers to the newly announced {{w|iPhone 8}} and jokes about the Roman numeral X below
*Version number 10 is the current version of Microsoft Windows
*The {{w|iPhone X}} was announced together with the iPhone 8 by Apple on September 12, 2017, a day before this comic was released. Apple clarified that X is meant to be read as the Roman numeral for 10, so for additional absurdity two xkcd phones share the same number, using different numerals
*The number 26 refers to the number of letters in the English alphabet
*In the year 1876 {{w|Alexander Graham Bell}} received the U.S. Patent No. 174465 for the {{w|invention of the telephone}}, but there is still a {{w|Elisha Gray and Alexander Bell telephone controversy|controversy}} whether {{w|Elisha Gray}} was the first to present a working telephone.

The "nonconsecutive version number war" referenced below the version names refers to several recent phones, and possibly operating systems, released consecutively with nonconsecutive version numbers, including:
*The iPhone X (or Ten) which will be released shortly after the iPhone 8
*The Samsung Galaxy Note 7 was released after the Note 5
*The Oneplus 5 was released after the OnePlus 3T
*The ZTE Axon 7 was released after the original Axon, skipping numbers 2-6.
*Microsoft Windows has a long history of non-consecutive version numbers/names, with the most well-known releases being (in order) {{w|Windows 3.1|3.1}}, {{w|Windows NT|NT}}, {{w|Windows 95|95}}, {{w|Windows 98|98}}, {{w|Windows 2000|2000}}, {{w|Windows Me|Me}}, {{w|Windows XP|XP}}, {{w|Windows Vista|Vista}}, {{w|Windows 7|7}}, {{w|Windows 8|8}}, {{w|Windows 10|10}} and, since the release of this comic, {{w|Windows 11|11}}.

Randall's ludicrous naming scheme aims to 'defeat' all of these by eclipsing them. By counting parallel version numbers xkcd defeated Apple 6:2.

The symbols at the end are ™ for trademark, ® for registered trademark, and © for copyright. The degree symbol ° after the letter C could be a play with degree Celsius. The use of all four symbols after the phrase is ridiculous, as ™ and ® indicate trademarks with opposite registration statuses, slogans can't be copyrighted, and the degree symbol usually has no meaning when applied to text.

In the title text Randall recognises privacy concerns about the facial recognition feature. A picture of a face will only be used for facial recognition, but never stored on the device nor transmitted to the internet. A ''small'' side effect may be that the famous selfie pictures aren't possible anymore, as well as video calls. Ironic, considering that the reason the camera is in the middle is to allow easier video calls.

==Transcript==
:[A smartphone is shown, the screen is slightly wider than the case, in the middle is a photo lens, and at the right bottom a small extra part is added to the screen.]
:[On top a bracket ranges nearly over the entire width of the case. The text reads:]
:Full-width rear camera
:[The label at the photo lens is:]
:Front camera (centered for eye contact during video chat)
:[The label on the extra part says:]
:Extra screen
:[At the bottom below the case a label reads:]
:Wireless charging port

:[The labels left to the phone are:]
:4k pixels (50x80)
:Radium backlight
:Sterile packaging
:College-ruled
:Broad spectrum SPF 30
:Pre-seasoned
:Burns clean coal
:Includes applicator
:Fonts developed by NASA
:Shroud of turn-style facial transfer unlock
:High thread count CPU
:Screen goes past the edge
:Safe for ages 6-8 months, 10 months, 18 months-3 years, and 12 years and older

:[The labels right to the phone are:]
:CDC partnership: Phone automatically administers seasonal flu vaccine to cheek every year
:12-function
:Dishwasher safe
:GPS transmitter
:3-G acceleration
:Portable, solar-heated
:Pore-cleaning strip
:Maximum strength
:Never needs sharpening
:Can survive up to 30 minutes out of water
:Exclusive Audubon Society app identifies birds and lets you control their flight

:[Text below the phone:]
:Introducing
:'''The xkcd Phone 6, VIII, 10, X, 26, and 1876'''
:''We didn't start this nonconsecutive version number war, but we will not lose it.''™®©°

{{comic discussion}}

[[Category:xkcd Phones]]
[[Category:Comics sharing name|xkcd Phones]]

2735: Coordinate Plane Closure

2023-02-08T18:07:51Z

172.70.90.140: /* Explanation */

{{comic
| number = 2735
| date = February 8, 2023
| title = Coordinate Plane Closure
| image = coordinate_plane_closure_2x.png
| imagesize = 271x376px
| noexpand = true
| titletext = 3D graphs that don't contact the plane in the closure area may proceed as scheduled, but be alert for possible collisions with 2D graph lines that reach the hole and unexpectedly enter 3D space.
}}

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

This comic is a "Math Notice," which is presumably a warning or reminder for mathematicians or others who interact with the field of mathematics, in a similar way to how a "Travel Notice" may prewarn drivers of planned road closures for repairs (or [https://www.cameroncountytx.gov/spacex/ rocketry]). Specifically, this one advises those who are using the coordinate plane to avoid drawing any graphs in the area with a hole until the damage is patched or fixed. This comic invents this concept of Math Notices, and is also very similar to that of a {{w|Notice to mariners}} or {{w|NOTAM|airmen}}, where nautical or aeronautical navigation might be impinged by a clear area (or volume) that should be kept clear from in the near future.

{{w|Coordinate planes}} are used in math for drawing graphs. The joke here is that a small section has been "closed for maintenance," likening the concept of a coordinate plane to an actual physical platform used by math, which is therefore vulnerable to damage such as is shown in the comic. In reality, the coordinate plane cannot be damaged as it is not a tangible thing.{{citation needed}}

Closure in mathematics is a term relating to sets, specifically operations on sets, and a coordinate plane is a particular set of numbers. A set is closed under an operation if all the "answers" to the operation are also in the set. The coordinate plane is said to be closed under vector addition for example - adding together any two coordinates produces another coordinate in the plane. Many functions and operators may be said to have closure on the real plane, and this comic may be a pun on that term. However, if there actually is a hole in the plane, then suddenly the plane will no longer exhibit closure.

The title text clarifies some of the unwanted effects of drawing a graph into the hole, stating that two-dimensional graph lines might accidentally become three-dimensional and interfere with the graphs made there.

==Transcript==

:<big>⚠️ Math Notice ⚠️</big>[emojis written without color]

:The coordinate plane will be closed Thursday between (1.5, 1) and (2, 1.5) to repair a hole.

:[A coordinate graph is shown, with a gray hole between (1.5, 1) and (2, 1.5). There are small fractures around the hole. The hole is highlighted with two dots in the corners of a hollow rectangle with split border lines.]

:If your graph uses this area, please postpone drawing until Friday or transform it to different coordinates.

{{comic discussion}}

[[Category:Math]]

2729: Planet Killer Comet Margarita

2023-02-07T06:52:21Z

172.70.90.140: /* Explanation */ More accuarate, as it is served via the turbines *into* a ¿standard? drinks container. Seemingly.

{{comic
| number = 2729
| date = January 25, 2023
| title = Planet Killer Comet Margarita
| image = planet_killer_comet_margarita_2x.png
| imagesize = 607x942px
| noexpand = true
| titletext = I'll take mine on the rocks, no ice.
}}

==Explanation==
{{incomplete|Created by 20 TRILLION LIMES - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
A {{w|margarita}} is a popular cocktail made from {{w|tequila}}, {{w|agave}}, {{w|triple sec}}, and {{w|lime juice}}. The frozen margarita variety is blended with ice, and this comic suggests making an enormous drink using the ice from a {{w|comet nucleus}} – the one depicted having more than a passing similarity to the much studied {{w|67P/Churyumov–Gerasimenko}}. Based on the amount of ice in a typical comet, it extrapolates the quantity of the other ingredients. The mixed drink is big enough to fill {{w|Lake Mead}}, a massive reservoir on the {{w|Colorado River}} created by the water held by the {{w|Hoover Dam}}.

Beyond the unusual quantities and mixing method, Randall uses the general term "orange liqueur" here rather than specifying triple sec. Assuming that each oil tanker holds exactly the same amount of liquid, the tequila:triple sec ratio in the comic is 4:1, meaning more tequila is used than necessary (the ratio should be 5:2).

''{{w|Armageddon_(1998_film)|Armageddon}}'' is a movie starring {{w|Bruce Willis}} about a team of astronauts and oil drill engineers on a mission to blow up an asteroid that's on a collision course with the Earth. The oil drill would be used to drill a hole deep into the asteroid, into which they'll drop a nuclear bomb to destroy it. The comic suggests using the same technique to explode the comet nucleus to get the ice. It should be noted that consuming any cocktail which has been infused with the radioactive byproducts commonly resulting from the detonation of a thermonuclear weapon may pose health risks which exceed those typically associated with the consumption of alcoholic beverages in general.{{Actual citation needed|It would be the relatively small primary charge that creates the radioisotopes, the thermonuclear secondary stage is practically uncontaminating beyond the initial pulse of ionizing radiation and any external matter boosted by the neutron flux. To quantify the risks of alcohol vs the mean radioisotope contamination seems like a question to ask Randall to talk to his contacts about.}}

In the title text, he asks for it "{{w|on the rocks}}", with no ice. In the context of normal cocktails, "on the rocks" means to serve with ice. Here the cocktail is served from the drained basin of Lake Mead, which has rock as a substrate - hence "on the rocks." In addition the comet nucleus contains lots of rocky material, so "on the rocks" with Randall's planet killer cocktail would also be served with literal rocks in it.

In the header, it says "Today's comic was drawn for Daniel Becker, based on [https://what-if.xkcd.com/162/ his winning question] submitted to the [https://xkcd.com/what-if-2/ What If? 2] contest." As explained in the What If? entry melting a comet on Earth has enough negative effects on the climate to negate the cooling effect a couple thousand times over – thus this margarita may in fact proudly wear the title "planet killer".

Assuming an average oil tanker size of 25.8 million gallons, this provides approximately 1,700 servings of tequila per adult on the planet. Therefore it is a planet killer in terms of alcohol poisoning and killing off all humans of adult drinking age.

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

:<big>The Planet Killer</big>
:Comet Ice Margarita

:Ingredients
:4,000 oil tankers full of tequila
:1,000 tankers full of orange liqueur
:1,000 tankers full of agave
:The juice from 20 trillion limes
:One comet nucleus

:Instructions
:(1) Drain Lake Mead, combine ingredients behind Hoover Dam
:(2) Detonate comet using Bruce Willis's drilling rig from ''Armageddon'' (1998)
::''Boom''
:(3) Dispense drink through Hoover Dam turbines

{{comic discussion}}

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

2730: Code Lifespan

2023-01-27T20:54:08Z

172.70.90.140: /* Transcript */ as/to, and indicate the subtle change in body-language

{{comic
| number = 2730
| date = January 27, 2023
| title = Code Lifespan
| image = code_lifespan_2x.png
| imagesize = 377x307px
| noexpand = true
| titletext = Surely (no one/everyone) will (recognize how flexible and useful this architecture is/spend a huge amount of effort painstakingly preserving and updating this garbage I wrote in 20 minutes)
}}

==Explanation==
{{incomplete|Created by a BOT PROGRAMMED 50 YEARS AGO. Do NOT delete this tag too soon.}}

In the first panel, [[Ponytail]] painstakingly future-proofed her code, but all in vain, as it will never be reused again. In the second panel, she decided that future-proofing would be unneccessary, as she assumes nobody would reuse her code that far in the future anyway. This feels like a {{w|Catch-22 (logic)|''Catch-22''}} situation for developers.

Worse yet, some developers may take the code as a dependency, leading to the whole internet breaking because of one angry developer {{w|Npm (software)#Notable breakages|deleting a 17-line function}}.

The title text proposes four permutations of sentences that software developers may consider, which given the context of the comic, usually start out as these two hoped-for ideals:
* Surely everyone will recognize how flexible and useful this architecture is. And,
* Surely no one will spend a huge amount of effort painstakingly preserving and updating this garbage I wrote in 20 minutes.
However, reality often falls short of such hopes, in that insufficient numbers of people recognize code intended for re-use, and far more people than intended will attempt to maintain and adapt sloppy work. The latter sometimes happens because the corner-cutting peculiarities of hasty work are often seen as far deeper necessities than they actually are. As such, the careful reading of the diametrically opposite opinions makes for two far less hopeful statements of:
* Surely no one will recognize how flexible and useful this architecture is. And,
* Surely everyone will spend a huge amount of effort painstakingly preserving and updating this garbage I wrote in 20 minutes.

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

:[Two situations are depicted between Ponytail and Cueball.]

:[Ponytail standing next to Cueball, with her palm raised.]
:Ponytail: It took some extra work to build, but now we'll be able to use it for all our future projects.

:[Caption below the panel:]
:How to ensure your code is never reused

:[Nearly identical situation to the first, but with the arm raised slightly less emphatically.]
:Ponytail: Let's not overthink it; if this code is still in use '''''that''''' far in the future, we'll have bigger problems.

:[Caption below the panel:]
:How to ensure your code lives forever

{{comic discussion}}
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Cueball]]
[[Category:Programming]]