explain xkcd - User contributions [en]

2786: UFO Evidence

2023-06-07T18:54:47Z

172.69.33.225:

{{comic
| number = 2786
| date = June 7, 2023
| title = UFO Evidence
| image = ufo_evidence_2x.png
| imagesize = 340x422px
| noexpand = true
| titletext = [Decades in the future] "Well, the good news is that we've received definitive communication from aliens. The bad news is that they're asking about Cats (2019)."
}}

==Explanation==
{{incomplete|Created by a ANATOMICALLY INCORRECT CAT WITH A NEED THAT WILL NOT BE SATISFIED. Do NOT delete this tag too soon.}}

A [[wikipedia:Ufology|UFOlogist]] accuses [[Cueball]] of being unwilling to listen to his claims for extraterrestrial life. UFO stands for "unidentified flying object" but is used in common parlance to mean a spaceship carrying beings from another planet. Cueball counters by admitting he once spent an entire afternoon trying to confirm the existence of a version of [[wikipedia:Cats_(2019_film)|the 2019 film adaptation of ''Cats'']] which allegedly gave the eponymous anthropomorphic felines anatomically-correct rear ends. The implication is that he's able to take any vaguely plausible claim at least a ''little'' seriously, but UFO claims don't even reach that bar.

The ''Cats'' movie was widely panned, in part because of the ugly and unfinished-looking design of its CGI cat characters. On March 18, 2020, Twitter user @jackwaz claimed a friend of a friend had been hired as a VFX artist to "[https://www.avclub.com/world-unites-over-need-for-cats-producers-to-releaseth-1842396923 remove CGI buttholes]" from the digital cats, meaning that there was a version of the movie where the characters all had anatomically correct buttholes. There was a wide clamor on the internet for the release of "the butthole cut," which was never confirmed to exist.

Cueball's response suggests that he is keen to analyse even the most frivolous claim, such as the claim that there was an edit of ''Cats'' where the characters had visible anuses. He is suggesting to White Hat that if his "evidence" were at all compelling, Cueball would change his mind immediately, because the thought of viewers wanting to watch CGI cats played by human actors with the "uncanny valley" realism of an anatomically correct anus seems so absurd that it would be hard to imagine that filmmakers choose to animate them that way. Other animated movies with animal characters typically do not feature parts of an animal that would be considered unacceptable for a human to show.

The fact that Cueball was willing to believe this absurdity on presentation of good evidence suggests that even the thought of visitors from other planets - something that has been often reported but never officially confirmed - would be something he could believe if he felt that White Hat had genuine evidence.

The comic probably pertains to U.S. Air Force veteran and former {{w|National Geospatial-Intelligence Agency}} member [https://www.newsnationnow.com/space/ufo/lawmakers-react-to-whistleblowers-ufo-claims/ David Grusch], who is seeking whistleblower status for his claims that the U.S. government is hiding crashed alien spacecraft and corpses.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:White Hat: You scientists aren't willing to take my UFO evidence seriously!
:Cueball: I once spent a whole day trying to confirm the existence of a director's cut of ''Cats'' (2019) where the cats had anatomically correct CGI butts.
:Cueball: It's honestly embarrassing how fast I'd do a 180 if your evidence seemed promising.

{{comic discussion}}

2786: UFO Evidence

2023-06-07T18:53:25Z

172.69.33.225:

{{comic
| number = 2786
| date = June 7, 2023
| title = UFO Evidence
| image = ufo_evidence_2x.png
| imagesize = 340x422px
| noexpand = true
| titletext = [Decades in the future] "Well, the good news is that we've received definitive communication from aliens. The bad news is that they're asking about Cats (2019)."
}}

==Explanation==
{{incomplete|Created by a ANATOMICALLY INCORRECT CAT WITH A NEED THAT WILL NOT BE SATISFIED. Do NOT delete this tag too soon.}}

A [[wikipedia:Ufology|UFOlogist]] accuses [[Cueball]] of being unwilling to listen to his claims for extraterrestrial life. UFO stands for "unidentified flying object" but is used in common parlance to mean a spaceship carrying beings from another planet. Cueball counters by admitting he once spent an entire afternoon trying to confirm the existence of a version of [[wikipedia:Cats_(2019_film)|the 2019 film adaptation of ''Cats'']] which allegedly gave the eponymous anthropomorphic felines anatomically-correct rear ends. The implication is that he's able to take any vaguely plausible claim at least a ''little'' seriously, but UFO claims don't even reach that bar.

The ''Cats'' movie was widely panned, in part because of its ugly and unfinished-looking design of its CGI cat characters. On March 18, 2020, Twitter user @jackwaz claimed a friend of a friend had been hired as a VFX artist to "[[https://www.avclub.com/world-unites-over-need-for-cats-producers-to-releaseth-1842396923 remove CGI buttholes]]" from the digital cats, meaning that there was a version of the movie where the characters all had anatomically correct buttholes. There was a wide clamor on the internet for the release of "the butthole cut," which was never confirmed to exist.

Cueball's response suggests that he is keen to analyse even the most frivolous claim, such as the claim that there was an edit of the movie version of the musical Cats where the characters had visible anuses. He is suggesting to White Hat that if his "evidence" were at all compelling, Cueball would change his mind immediately, because the thought of viewers wanting to watch CGI cats played by human actors with the "uncanny valley" realism of an anatomically correct anus seems so absurd that it would be hard to imagine that filmmakers choose to animate them that way. Other animated movies with animal characters typically do not feature parts of an animal that would be considered unacceptable for a human to show.

The fact that Cueball was willing to believe this absurdity on presentation of good evidence suggests that even the thought of visitors from other planets - something that has been often reported but never officially confirmed - would be something he could believe if he felt that White Hat had genuine evidence.

The comic probably pertains to U.S. Air Force veteran and former {{w|National Geospatial-Intelligence Agency}} member [https://www.newsnationnow.com/space/ufo/lawmakers-react-to-whistleblowers-ufo-claims/ David Grusch], who is seeking whistleblower status for his claims that the U.S. government is hiding crashed alien spacecraft and corpses.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:White Hat: You scientists aren't willing to take my UFO evidence seriously!
:Cueball: I once spent a whole day trying to confirm the existence of a director's cut of ''Cats'' (2019) where the cats had anatomically correct CGI butts.
:Cueball: It's honestly embarrassing how fast I'd do a 180 if your evidence seemed promising.

{{comic discussion}}

Talk:2768: Definition of e

2023-04-28T06:29:28Z

172.69.33.225:

This is of course one way of arriving at the value of e: https://en.wikipedia.org/wiki/E_(mathematical_constant)#Compound_interest [[User:Trimeta|Trimeta]] ([[User talk:Trimeta|talk]]) 03:55, 27 April 2023 (UTC)

I do not know who said that Miss Lenhard is after a dollar - but that is so not her![[User:Tier666|Tier666]] ([[User talk:Tier666|talk]]) 09:15, 27 April 2023 (UTC)

One explanation may be that Miss Lenhart is in a Ponzi scheme. Ponzi schemes claim to offer unbelievably high returns that are actually paid by later investors, it will invariably crash, but by the time, the scammers will have vanished with the money. Here, Miss Lenhart effectively offers +172% annual returns, which is way above what a honest bank can offer, and she seems to push the student into investing, which is aligned with the Ponzi scheme goal of getting as many people to invest as possible. [[Special:Contributions/162.158.22.234|162.158.22.234]] 11:25, 27 April 2023 (UTC)

==e^iπ + 1==
'''e''' is an inherent feature of mathematics. The equation e^iπ + 1 = 0 is made of the 5 most important numbers. - [[User:Frankie|Frankie]] ([[User talk:Frankie|talk]]) 13:10, 27 April 2023 (UTC)
:i is not a number, it is the imaginary ''unit''. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 16:00, 27 April 2023 (UTC)
::i is a number. 1 is also sometimes called ''the unit'' by mathematicians. [[Special:Contributions/172.71.22.105|172.71.22.105]] 21:01, 27 April 2023 (UTC)
:Every number is an inherent feature of mathematics, but I don't think the number e is as special as formulas like this make it appear. What's really significant is the exponential function exp, and the number e is just exp 1. It is therefore similar in significance to √2 or ln 2. Similarly, in the identity you provide, the general form is exp iθ = cos θ + i sin θ, and plugging in θ = π is just one special case. [[User:EebstertheGreat|EebstertheGreat]] ([[User talk:EebstertheGreat|talk]]) 02:33, 28 April 2023 (UTC)
:e^ipi is genuinely quite boring. I would prefer e^i2pi = e^0 = 1 because its more immediately apparent that e^ix forms a circle/periodic function[[Special:Contributions/172.69.33.225|172.69.33.225]] 06:29, 28 April 2023 (UTC)

Does anyone else see the buttons at the top as being weird? The first comic arrow is split into two buttons separated by a new line. [[Special:Contributions/172.70.38.17|172.70.38.17]] 12:24, 27 April 2023 (UTC)
: Agree. It does not appear on the main comic, just here. [[User:Iggynelix|Iggynelix]] ([[User talk:Iggynelix|talk]])

Maybe the bank was originally owned by Beret Guy? That would explain why it continues to stay in business despite effectively giving away money. It's not suggested anywhere in the comic, but the idea is very much in line with his powers. [[Special:Contributions/162.158.158.137|162.158.158.137]] 13:40, 27 April 2023 (UTC)

The current explanation is vague regarding the identity of the speaker in the title text, but it seems clear to me that the title text is being said by Miss Lenhart - she's explaining how she came into possession of the bank account in question. Her high school teacher set it up, and then she engineered the takeover so she could continue to use the account after passing the class. [[User:Snuffysam|Snuffysam]] ([[User talk:Snuffysam|talk]]) 16:12, 27 April 2023 (UTC)
:Why would she need to pass the class to use the bank? [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 16:35, 27 April 2023 (UTC)

2673: Cursed mRNA Cocktail

2022-09-17T01:09:17Z

172.69.33.225: /* Explanation */ caveat

{{comic
| number = 2673
| date = September 16, 2022
| title = Cursed mRNA Cocktail
| image = cursed_mrna_cocktail_2x.png
| imagesize = 331x513px
| noexpand = true
| titletext = Serve one each to guests whose last cursed cocktail was more than 2 months ago.
}}

==Explanation==
{{incomplete|Created by a VACCINE DRINKER. Do NOT drink the mRNA Cocktail. Do NOT delete this tag too soon.}}

Approximately two dozenth in [[:Category:Comics featuring cursed items|the "cursed" series]], this comic describes a process to approximate the molecular composition of certain {{w|mRNA}}-based vaccines in drinkable form. It contains the variety and relative concentrations of the simple molecular constituents found within the injectable mixture. i.e. mostly water, some sugar, lipids (and an amino acid "or" biological and genetic material.)

Like much of what we eat or drink, the stomach and intestines will neutralise much of the complexity of either the vaccines or this ersatz replica of them, reducing them to simpler proteins of some slight nutritional value. For the vaccine to work, it has been designed to be injected into the body e.g. {{w|intramuscular}}ly to bypass the hostile environment of the human digestive system. While there are similar vaccines administered as a nasal spray, the fragility of mRNA in the human digestive system has curtailed the search for ingestible analogs. [[Randall]]'s replacement mixture '''might provoke generally unwise physiological reactions.''' This is funny because while very few people would find such a mixture palatable, it is likely nontoxic,{{cn}} and contains moisture, protein, and calories, all important if elementary nutritional components. Because it doesn't contain a complete spectrum of essential amino acids, vitamins, and minerals, you can't live on it alone.

The title text suggests the mixture can be served as a "booster" to a prior dose or serving after an initial treatment. There is much study of vaccine efficacy relative to the timing of subsequent dosages. Too little time between makes the new dose not necessarily cause the immune system to react in the way that it should; however most pairs of distinct vaccines work well if delivered on the same day.{{Actual citation needed}} The comic recommends not redosing within two months of the last attempt.

The instruction to serve in {{w|shot glasses}} is a play on the actual vaccines being given as a {{w|Injection (medicine)|shot}} (U.K.: {{wiktionary|jab#Noun|jab}}; Scotland: {{wiktionary|jag#Noun|jag}}).

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:Ever wondered what it would be like to drink the new COVID booster?
:This recipe approximately recreates the taste and nutritional profile!
:''(Note: does not protect against COVID.)''

:[The following two testimonies are displayed in spiky bubbles.]
:"...What? Eww." -CDC spokesperson
:"Please stop." -Dr. Anthony Fauci

:Ingredients
:2 cups water
:3 tbsp mayonnaise
:¼ tsp MSG or nutritional yeast
:1 tbsp sugar

:Directions
:Pour 1 cup of water into a blender. Add the mayonnaise and MSG. Blend until smooth.
:Pour the other cup of water into a glass. Add the sugar and 1 tsp of the mixture from the blender. Stir well.
:Serve in shot glasses.

{{comic discussion}}
[[Category:COVID-19]]
[[Category:Biology]]
[[Category:Comics featuring cursed items]]
[[Category:Comics featuring real people]]

2670: Interruption

2022-09-10T16:27:42Z

172.69.33.225: /* Explanation */ expand

{{comic
| number = 2670
| date = September 9, 2022
| title = Interruption
| image = interruption.png
| titletext = It's been extra bad ever since my GPS got stuck on Phoebe Judge mode.
}}

==Explanation==
{{incomplete|Created by a GPS VOICE SYNTHESIZER. Do NOT delete this tag too soon.}}

This comic is about listening to a podcast or other speech while driving with GPS navigation using voice synthesis for driving instructions. Car audio systems typically allow voice navigation instructions to interrupt whatever else is playing so they can be heard clearly. It's usually easy for the driver to recognise such instructions due to the sudden change in characteristics of the voice.

However, if the synthetic voice is similar to the speech that was playing then it may be hard to distinguish between the two, especially if the navigation instructions coincide logically with the interrupted speech. In cases like this, the listener may at first not realise that the navigation instructions have interrupted the audio playing, and think that the instruction is part of the what that they were listening to, especially if they are concentrating intently on driving instead of the audio.

The comic suggests [[Randall]] misinterpreted driving instructions as part of the story being told in a podcast because the voices sound similar. The comic illustrates the instructions as if they were part of the story from the podcast. Due to the mysterious nature of the story and character being described, they reasonably could have said the navigation instruction line as part of the podcast, leading to a humorous ambiguity between the two.

The title text suggests this confusion worsened after Randall's navigation instructions voice got stuck emulating {{w|Phoebe Judge}}, known for the {{w|Criminal (podcast)|''Criminal''}} and {{w|This Is Love (podcast)|''This Is Love''}} podcasts, implying he often listens to her.

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

[First panel, Cueball and Ponytail recording a conversational podcast at a table.]

Cueball: ...And that's when you knew she had betrayed you?"

Ponytail: Yeah, she picked up the money and walked out."

[Second panel, zoomed in on Ponytail]

Ponytail: To this day, I don't know if she planned it all.

Ponytail: But there was one moment that makes me think, maybe she did.

[Third panel, a silhouette in a doorway]

Ponytail (as voiceover) Just before she disappeared, she paused at the door, looked back at me, and said,

Silhouette (as diagetic speech): Hey - if I ever see you again,

[Fourth panel, zoomed in version of third panel]

Silhouette: Turn left at the next light

[Caption below the panels:]

It's so disorienting when a podcaster has a voice that's similar to my navigation app.

{{comic discussion}}

Talk:2657: Complex Vowels

2022-08-11T00:21:32Z

172.69.33.225: Asking about adding "linguist character"

Spoken symbol bears resemblance to 🜏, https://en.wiktionary.org/wiki/%F0%9F%9C%8F

sscchhwwaa is easy, say it like the x in "fire" and the silent p in "bath"[[Special:Contributions/172.70.85.13|172.70.85.13]] 21:42, 10 August 2022 (UTC)

Ideas: bellows-, reed-, and lucite-based voiced phone production tracts typical in science museums; {{w|diphone}}s as an alternative to phomemes (a diphone is the second half of one phoneme followed by the first half of the next -- NOT two adjacent phomemes as the Wikipedia article claims. Two adjacent phomemes are a biphone, not a diphone); the relationship of the position of the tongue in two dimensional place × closedeness space to the fundamental and second {{w|formant}} frequencies of speech audio; {{w|diphthong}}s; {{w|Mel-frequency cepstrum|cepstral}} representation such as {{w|MFCC|mel-frequency ceptstral coefficients}}; and {{w|Zalgo text}} IPA. [[Special:Contributions/172.70.206.213|172.70.206.213]] 22:41, 10 August 2022 (UTC)

The vowelspace is depicted in two dimensions for convenience, but it has at least three dimensions. Look at the IPA vowel diagram (already added to this page). The third dimension is roundedness.
:Yes, of the lips; apart from the two dimensions (out: place, and up: closedeness) of the tongue. [[Special:Contributions/172.70.206.95|172.70.206.95]] 22:59, 10 August 2022 (UTC)
::Does roundedness also involve the tongue and cheeks to any extent? [[Special:Contributions/172.69.33.199|172.69.33.199]] 23:36, 10 August 2022 (UTC)

[https://core.ac.uk/download/pdf/47086396.pdf] just saying. Also [https://www.sciencedirect.com/science/article/abs/pii/S0095447010000562] by the same author. And [http://jlls.org/index.php/jlls/article/download/3168/947] might work too. [[Special:Contributions/172.70.206.95|172.70.206.95]] 23:10, 10 August 2022 (UTC)

This linguist character has appeared 3 times now. Will there be a new character page dedicated to Gretchen or "The Linguist"? [[Special:Contributions/172.69.33.225|172.69.33.225]] 00:21, 11 August 2022 (UTC)

2381: The True Name of the Bear

2022-08-11T00:18:34Z

172.69.33.225: /* Explanation */ update gretchen

{{comic
| number = 2381
| date = November 4, 2020
| title = The True Name of the Bear
| image = the_true_name_of_the_bear.png
| titletext = Thank you to Gretchen McCulloch for fielding this question, and sorry that as a result the world's foremost internet linguist has been devoured by the brown one. She will be missed.
}}

==Explanation==
The Canadian Internet linguist {{w|Gretchen McCulloch}} [https://twitter.com/gretchenamcc/status/1113195661275611137 tweeted] about [https://www.charlierussellbears.com/LinguisticArchaeology.html the theory] that the word for bear became taboo in some branches of Indo-European languages - notably the Germanic one - and it was replaced by euphemisms. In the Germanic branch, the euphemism may have been "the brown one," and thus the modern word "bear" (derived from Germanic "beran") would more literally translate into the color "brown" rather than the animal.

The Indoeuropean root for bear is *rkto-, which has been inferred from modern languages that still use a word derived from it. In the comic, McCulloch applies {{w|Sound change|sound shifting}} laws to it to guess how it would have evolved in English had it not been superseded, but saying it seems to actually summon a bear.

Interestingly enough, the hypothesized word “arth” is the same as the Welsh and Cornish for the word “bear.” Welsh belongs to the Celtic language family, which is one of the Indo-European branches that still uses a word derived from *rkto-, as do the Italic (Romance), Greek and Indo-Aryan (Sanskrit) branches, while Germanic, Slavic and Baltic branches abandoned it for different euphemisms. Another Indo-European language where the word for bear is very close to this extrapolation is Armenian, where it's written [https://en.wiktionary.org/wiki/արջ արջ] and pronounced “artch”. The comic does not explain why speakers of Welsh, Cornish, Italic, Greek, Indo-Aryan, and Armenian languages do not summon a bear every time they refer to one.{{Citation needed}}

Use of true names appears to be [[1013: Wake Up Sheeple|highly effective in the xkcd universe, rather like a fairy tale]], and it is also {{tvtropes|IKnowYourTrueName|a common trope}} elsewhere. Some say a true name contains clear meaning of who someone or something really is.

In later comics ([[2421: Tower of Babel]], and [[2657: Complex Vowels]] a linguist that resembles Gretchen from this comic reappears. Since these stories occur during biblical times or in extra-dimensional realities, it is not Gretchen, but obviously this is how linguists look in xkcd from now on.

==Transcript==
:[Megan walks in front the left, looking down at her phone. Cueball and Ponytail are standing next to each other.]
:Megan: Wow - according to the internet, we don't know the true name of the bear.
:Cueball: What?

:[Gretchen McCulloch, drawn with short, curly hair, comes on-panel from the right.]
:Megan: Apparently there was a superstition that saying its name would summon it. "Bear" and "bruin" mean "the brown one." Its actual name has been lost.
:Cueball: Wow.
:Ponytail: Gretchen, is this for real?

:[Zoom-in on Gretchen.]
:Gretchen: Well, sort of
:Gretchen: The Proto-Indo-European root was *rkto-
:Gretchen: It was lost in the Germanic languages like English, but survived elsewhere, e.g. Greek "arktos" and Latin "ursus"

:[Back to the second panel, with Megan holding her phone down, Ponytail with her hands in the air, and Gretchen with her hand on her chin.]
:Megan: So could we figure out what the word would have been in English?
:Gretchen: Hmm. I mean, we'll never know, but given Germanic sound shifts, a reasonable guess might be "arth"?
:Ponytail: ''No!!''

:[The panel zooms in again to Gretchen.]
:Ponytail (off-panel): ''Stop! AAAAA!''
:Gretchen: What??
:Ponytail (off-panel): Don't ''say'' it!

:[Ponytail is holding her palms out. Megan is no longer in the panel.]
:Ponytail: What have you ''done''?
:Off-panel noise: <big>'''''ROAR'''''</big>
:Gretchen: Oh
:Gretchen: Oh no

== Trivia ==
The last comic strip that ended with the words "Oh no" was [[2314: Carcinization]], which also featured an unfortunate occurrence involving an animal as its punchline when Cueball spontaneously transformed into a crab.

{{comic discussion}}

[[Category:Comics featuring Megan]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring real people]]
[[Category:Language]]
[[Category:Animals]]

2654: Chemtrails

2022-08-04T09:08:33Z

172.69.33.225: /* Explanation */ typo

{{comic
| number = 2654
| date = August 3, 2022
| title = Chemtrails
| image = chemtrails.png
| titletext = Ants have reverse chemtrails--regular citizens spraying chemicals everywhere they go to control the government.
}}

==Explanation==
{{incomplete|Created by an INKJET PRINTER FILLED WITH PERFUME. Do NOT delete this tag too soon.}}

{{w|Ant}}s, studied along with other insects by {{w|entomologist}}s, leave trails of signalling secretions such as {{w|pheromones}}, natural chemicals that they emit along the trail to and from food sources and other events. These chemical trails guide other ants in the colony to return to food, but are not generally refered to as chemtrails by biologists except informally.

[[Cueball]] is intentionally conflating these with {{w|chemtrails}}, the subject of a conspiracy theory that the government controls the population by spraying toxic or mind-/body-transformative chemicals from high-flying aircraft. This myth may be based on the practice of {{w|cloud seeding}}, which uses chemical flares containing silver nitrate to increase precipitation up to 15%.[https://www.vox.com/videos/23290459/cloud-seeding-manmade-rain-future-perfect] Chemical manipulation of unwitting people is not uncommon, but usually doesn't involve airplanes.[https://www.businessnewsdaily.com/3469-smells-shoppers-spend-more.html] Please see also [[1677: Contrails]] — contrail is short for "condensation trail" which are cloud-like lines in the sky created by jet engines.

[[Ponytail]] specifically studies ant navigation, possibly as a professional entomologist who once worked with an editor who inserted the word "chemtrails" in one of her drafts entitled, "Navigation by trail gland secretion signalling: vocabulary and grammar," which unbeknownst to her at the time was competing before a peer review panel with another paper by a male rival such as [https://bio.kuleuven.be/ento/pdfs/billen_procnev_2006_signal_variety.pdf Johan Bilen] of the Leuven University Zoological Institute. [[Cueball]] knows she will be annoyed when he tells her "So, I hear you're really into chemtrails?" And he gets the reaction he hoped for when she objects strongly and rejects this with a loud '''No!!''' [[Randall]] then notes in the caption that this is how to annoy people like Ponytail. Whether ant gland secretion signalling is {{w|Turing completeness|Turing-equivalent}} was explored in Douglas Hofstadter's ''{{w|Gödel, Escher, Bach|Gödel, Escher, Bach: an Eternal Golden Braid}}''.

The title text contrasts that with the actual ants, where the individual insects instinctively decide how the whole colony behaves by using chemicals to indicate routes to food or dangers to motivate the colony to react to their individual experiences, the reverse of the human fear about personal independence being regulated by an otherwise disconnected ruling 'elite'.

Ants is a recurring theme, as well as those that study them, see for instance [[1610: Fire Ants]]. Chemtrails was also the subject of [[966: Jet Fuel]] and [[1677: Contrails]] and was mentioned in [[1803: Location Reviews]]. This comic has a similar format to [[2036: Edgelord]]: a simple one-panel interaction consisting of a (likely deliberate) misuse of a term in regards to a professional's work, followed immediately by the professional's upset outburst, and Randall's caption spelling out "How to annoy" the professional. Both of these seems to be related to Randall's [[:Category:My Hobby|hobbies]], as this is something he seems to think about a lot — how to annoy specific people.

==Transcript==
:[Cueball stands talking to Ponytail, who has her arms raised and has small lines above her head to indicate annoyance.]
:Cueball: So, I hear you're really into chemtrails?
:Ponytail: '''''No!!'''''

:[Caption below the panel:]
:How to annoy entomologists who study ant navigation

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Animals]]
[[Category:Biology]]
[[Category:Puns]]
[[Category:Conspiracy theory]]

2654: Chemtrails

2022-08-04T09:06:33Z

172.69.33.225: /* Explanation */ fix link

{{comic
| number = 2654
| date = August 3, 2022
| title = Chemtrails
| image = chemtrails.png
| titletext = Ants have reverse chemtrails--regular citizens spraying chemicals everywhere they go to control the government.
}}

==Explanation==
{{incomplete|Created by an INKJET PRINTER FILLED WITH PERFUME. Do NOT delete this tag too soon.}}

{{w|Ant}}s, studied along with other insects by {{w|entomologist}}s, leave trails of signalling secretions such as {{w|pheromones}}, natural chemicals that they emit along the trail to and from food sources and other events. These chemical trails guide other ants in the colony to return to food, but are not generally refered to as chemtrails by biologists except informally.

[[Cueball]] is intentionally conflating these with {{w|chemtrails}}, the subject of a conspiracy theory that the government controls the population by spraying toxic or mind-/body-transformative chemicals from high-flying aircraft. This myth may be based on the practice of {{w|cloud seeding}}, which uses chemical flares containing silver nitrate to increase precipitation up to 15%.[https://www.vox.com/videos/23290459/cloud-seeding-manmade-rain-future-perfect] Chemical manipulation of unwitting people is not uncommon, but usually doesn't involve airplanes.[https://www.businessnewsdaily.com/3469-smells-shoppers-spend-more.html] Please see also [[1677: Contrails]] — contrail is short for "condensation trail" which are cloud-like lines in the sky created by jet engines.

[[Ponytail]] specifically studies ant navigation, possibly as a professional entomologist who once worked with an editor who inserted the word "chemtrails" in one of her drafts entitled, "Navigation by trail gland secretion signalling: vocabulary and grammar," which unbeknownst to her at the time was competing before a peer review panel with another paper by a male rival such as [https://bio.kuleuven.be/ento/pdfs/billen_procnev_2006_signal_variety.pdf Johan Bilen] of the Leuven University Zoological Institute. [[Cueball]] knows she will be annoyed when he tells her "So, I hear you're really into chemtrails?" And he gets the reaction he hoped for when she objects strongly and rejects this with a loud '''No!!''' [[Randall]] then notes in the caption that this is how to annoy people like Ponytail. Whether ant gland secretion signalling is {{w|Turing completeness|Turing-equivalent}} was explored inn Douglas Hofstadter's ''{{w|Gödel, Escher, Bach|Gödel, Escher, Bach: an Eternal Golden Braid}}''.

The title text contrasts that with the actual ants, where the individual insects instinctively decide how the whole colony behaves by using chemicals to indicate routes to food or dangers to motivate the colony to react to their individual experiences, the reverse of the human fear about personal independence being regulated by an otherwise disconnected ruling 'elite'.

Ants is a recurring theme, as well as those that study them, see for instance [[1610: Fire Ants]]. Chemtrails was also the subject of [[966: Jet Fuel]] and [[1677: Contrails]] and was mentioned in [[1803: Location Reviews]]. This comic has a similar format to [[2036: Edgelord]]: a simple one-panel interaction consisting of a (likely deliberate) misuse of a term in regards to a professional's work, followed immediately by the professional's upset outburst, and Randall's caption spelling out "How to annoy" the professional. Both of these seems to be related to Randall's [[:Category:My Hobby|hobbies]], as this is something he seems to think about a lot — how to annoy specific people.

==Transcript==
:[Cueball stands talking to Ponytail, who has her arms raised and has small lines above her head to indicate annoyance.]
:Cueball: So, I hear you're really into chemtrails?
:Ponytail: '''''No!!'''''

:[Caption below the panel:]
:How to annoy entomologists who study ant navigation

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Animals]]
[[Category:Biology]]
[[Category:Puns]]
[[Category:Conspiracy theory]]

2654: Chemtrails

2022-08-04T09:05:34Z

172.69.33.225: /* Explanation */ geekcruft

{{comic
| number = 2654
| date = August 3, 2022
| title = Chemtrails
| image = chemtrails.png
| titletext = Ants have reverse chemtrails--regular citizens spraying chemicals everywhere they go to control the government.
}}

==Explanation==
{{incomplete|Created by an INKJET PRINTER FILLED WITH PERFUME. Do NOT delete this tag too soon.}}

{{w|Ant}}s, studied along with other insects by {{w|entomologist}}s, leave trails of signalling secretions such as {{w|pheromones}}, natural chemicals that they emit along the trail to and from food sources and other events. These chemical trails guide other ants in the colony to return to food, but are not generally refered to as chemtrails by biologists except informally.

[[Cueball]] is intentionally conflating these with {{w|chemtrails}}, the subject of a conspiracy theory that the government controls the population by spraying toxic or mind-/body-transformative chemicals from high-flying aircraft. This myth may be based on the practice of {{w|cloud seeding}}, which uses chemical flares containing silver nitrate to increase precipitation up to 15%.[https://www.vox.com/videos/23290459/cloud-seeding-manmade-rain-future-perfect] Chemical manipulation of unwitting people is not uncommon, but usually doesn't involve airplanes.[https://www.businessnewsdaily.com/3469-smells-shoppers-spend-more.html] Please see also [[1677: Contrails]] — contrail is short for "condensation trail" which are cloud-like lines in the sky created by jet engines.

[[Ponytail]] specifically studies ant navigation, possibly as a professional entomologist who once worked with an editor who inserted the word "chemtrails" in one of her drafts entitled, "Navigation by trail gland secretion signalling: vocabulary and grammar," which unbeknownst to her at the time was competing before a peer review panel with another paper by a male rival such as [https://bio.kuleuven.be/ento/pdfs/billen_procnev_2006_signal_variety.pdf Johan Bilen] of the Leuven University Zoological Institute. [[Cueball]] knows she will be annoyed when he tells her "So, I hear you're really into chemtrails?" And he gets the reaction he hoped for when she objects strongly and rejects this with a loud '''No!!''' [[Randall]] then notes in the caption that this is how to annoy people like Ponytail. Whether ant gland secretion signalling is {{w|Turing equivalence|Turing-equivalent}} was explored inn Douglas Hofstadter's ''{{w|Gödel, Escher, Bach|Gödel, Escher, Bach: an Eternal Golden Braid}}''.

The title text contrasts that with the actual ants, where the individual insects instinctively decide how the whole colony behaves by using chemicals to indicate routes to food or dangers to motivate the colony to react to their individual experiences, the reverse of the human fear about personal independence being regulated by an otherwise disconnected ruling 'elite'.

Ants is a recurring theme, as well as those that study them, see for instance [[1610: Fire Ants]]. Chemtrails was also the subject of [[966: Jet Fuel]] and [[1677: Contrails]] and was mentioned in [[1803: Location Reviews]]. This comic has a similar format to [[2036: Edgelord]]: a simple one-panel interaction consisting of a (likely deliberate) misuse of a term in regards to a professional's work, followed immediately by the professional's upset outburst, and Randall's caption spelling out "How to annoy" the professional. Both of these seems to be related to Randall's [[:Category:My Hobby|hobbies]], as this is something he seems to think about a lot — how to annoy specific people.

==Transcript==
:[Cueball stands talking to Ponytail, who has her arms raised and has small lines above her head to indicate annoyance.]
:Cueball: So, I hear you're really into chemtrails?
:Ponytail: '''''No!!'''''

:[Caption below the panel:]
:How to annoy entomologists who study ant navigation

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Animals]]
[[Category:Biology]]
[[Category:Puns]]
[[Category:Conspiracy theory]]

2653: Omnitaur

2022-08-02T16:09:06Z

172.69.33.225: /* Explanation */ not necessarily

{{comic
| number = 2653
| date = August 1, 2022
| title = Omnitaur
| image = omnitaur.png
| titletext = "My parents were both omnitaurs, which is how I got interested in recombination," said the normal human.
}}

==Explanation==
{{incomplete|Created by AN OMNITAUR ZYGOTE IN A FETUS'S BODY. Do NOT delete this tag too soon.}}
Omnitaur is an {{w|anagram}} of {{w|minotaur}}, a mythical creature that was part man, part bull. "{{wiktionary|omni}}" is a prefix that means "all" that is, for instance, known from the word {{w|omnivore}}, meaning 'all eating' as compared to {{w|carnivore}} or {{w|herbivore}} — only eating meat or plant respectively. Given the combination of animals used to create the omnitaur, it could be expected that it was also an omnivore.

An "omnitaur" would suggest that it would encompass all real and mythical creatures, or perhaps some random assortment of such. In this instance, it appears to be a hybrid, or {{w|Chimera (genetics)|genetic chimera}}, combined from eleven different creatures: {{w|fish}}, {{w|lion}}, {{w|snake}}, {{w|shark}}, {{w|bull}}, {{w|dragon}} (a mythical creature in its own right), {{w|horse}}, {{w|leopard}}, {{w|Sheep|ram}} (male sheep), {{w|human}} and {{w|bird}}. Chimerism is not as uncommon at the genetic level, for example humans have about 145 genes (out of around 30,000) originating from bacteria, other single-celled organisms, and viruses.[https://www.science.org/content/article/humans-may-harbor-more-100-genes-other-organisms] {{w|Mitochondria}}, the powerhouse of the cell, were originally chimeric bacteria {{w|symbiosis|symbionts}}. But chimeras of larger organisms are rare, usually involving fraternal twins whose {{w|zygote}}s or {{w|embryo}}s combined, as in {{w|conjoined twins}} but resulting in less distinct {{w|phenotype|phenotypical}} expression. Artificial human chimeras with viruses, mice, pigs, and monkeys have been the subject of ethics controversies in recent years.[https://www.theguardian.com/technology/2019/aug/11/the-five-chimeras-human-monkey-hybrid-genetic][https://jme.bmj.com/content/45/7/440.abstract]

The title text is a comment by a human whose parents were both omnitaurs. It would be funny that such parents would not produce offspring that was still omnitaur. It suggests that this may be the result of {{w|genetic recombination}}, which is the exchange of genetic material between different organisms leading to production of offspring with combinations of traits that differ from those found in either parent. In this case, seemingly, they inherited ''only'' the human elements of each parent, yet sufficient to develop into a whole human with no missing or chimeric elements. Both omnitaur parents probably had human germlines and compatible reproductive organs

===Mythical phenotypical chimeras===

In addition to the minotaur, many other potential inspirations can be found in mythology, like the {{w|centaur}}, which has the upper body of a human and the lower body and legs of a horse; the {{w|manticore}}, with a body of a lion and human face; a {{w|griffin}}, with a lion's body and a eagle's head; a {{w|mermaid}}, with a lower body of a fish and upper body of a human; a {{w|Hippocampus (mythology)|hippocampus}}, with the upper body of a horse and a lower body of a fish; a {{w|qilin}}, with a body that resembles both a horse and a dragon; or the mythological {{w|chimera (mythology)|chimera}}, for which the genetic chimera is named, which has lion, snake, and goat body parts. Ultimately, there are {{w|List of hybrid creatures in folklore|lots of hybrid creatures in mythology}} with {{w|phenotype}}s combined from multiple animals. Usually, genetic hybridization produces much more smoothly blended phenotypes instead of dividing the body into large distinctly chimeric regions, although {{w|Mosaic (genetics)|mosaicism}} of fur, skin or {{w|Heterochromia iridum|eyes}} can produce notable differences of hue or shade.

===Speculative implications===

In {{w|C. S. Lewis}}' {{w|The Chronicles of Narnia}}, the {{w|Magical_creatures_in_The_Chronicles_of_Narnia#Centaurs|centaurs}} are described as eating two meals — a huge roast meal "to satisfy the man stomach," and a meal of grass, "to satisfy the horse stomach," making it take quite some time for them to eat every morning. Since the omnitaur also has herbivore and omnivore (as well as carnivore) parts, this could further support the supposition that it is an omnivore, and it may similarly need multiple stomachs for these multiple appetites. It is unclear how compatible the various diets of its components would be (not least because 'fish,' 'snake' and 'bird' are quite unspecific, and it's hard to know what a dragon would eat) but it would likely need several meals, taking even longer to eat than the Centaur (plus the bird beak may slow the process down quite a bit.) In any case, a chimera of both warm and cold-blooded organisms seems unlikely to be viable, even at the organ level, let alone with combined surface phenotypes. While chimeras occur in fantasy fiction, they also occur in science fiction, for example as {{w|cyborg}}s.

==== Title text suppositions ====

Since the example depicted seems to be only 1/11 human, the odds of two parents as mentioned in the title text having fully human offspring would simplistically appear to be (1/11)11, or one chance in 285 billion. In reality, each physical part could not be the result of an equal recombinant genetic contribution, because the eleven animal chromosomes vary widely in number and size. Moreover, chimeras composed of multiple animals do not have chimeric children, because even with multiple sets of reproductive organs, the {{w|germline}}s are not combined.
Therefore, both omnitaur parents likely had human germlines and compatible reproductive organs. [https://journals.biologists.com/dev/article/148/12/dev195792/269139/The-road-to-generating-transplantable-organs-from Interspecies blastocyst complementation,] used to create human chimera organs and cell lines in other animals, is usually limited to combining two organisms into one whose offspring are not hybridized if they are even viable, and usually without human germlines or reproductive organs (or human central nervous systems, assuaging a major ethical concern.)

==Transcript==
:[A creature, the Omnitaur, is shown. It is a four legged animal divided into 11 segments, each segment is from a different animal. An arrow goes to each section from a label, most of the labels are above the animal, but the fourth and seventh segments labels are below the animal. The animal has a fish tail and cat like hind legs. The torso is divided into four segments, the first and last of these with scales, but only the last of these also with sharp scales at the top. The second torso segment is white and smooth, the third also white but with hair both above and below, those above merges with the sharp scales of the fourth torso segment. The front legs are horse like, the lower neck is from an animal with dark spots, the upper neck has rams horns, which goes over in the central part of a human head, with ears and hair (drawn like a real human, not like a xkcd stick figure) and finally the front of the face is a bird with its eyes and a beak shown. The labels are given here in the order of the segment of the animal from the back to the front (disregarding weather the label is written above or below the animal:]
:Fish
:Lion
:Snake
:Shark
:Bull
:Dragon
:Horse
:Leopard
:Ram
:Human
:Bird

:[Caption below the panel:]
:The Omnitaur

{{comic discussion}}

[[Category:Animals]]
[[Category:Biology]]

2653: Omnitaur

2022-08-02T16:07:24Z

172.69.33.225: /* Explanation */ teach the paren/period controversy

{{comic
| number = 2653
| date = August 1, 2022
| title = Omnitaur
| image = omnitaur.png
| titletext = "My parents were both omnitaurs, which is how I got interested in recombination," said the normal human.
}}

==Explanation==
{{incomplete|Created by AN OMNITAUR ZYGOTE IN A FETUS'S BODY. Do NOT delete this tag too soon.}}
Omnitaur is an {{w|anagram}} of {{w|minotaur}}, a mythical creature that was part man, part bull. "{{wiktionary|omni}}" is a prefix that means "all" that is, for instance, known from the word {{w|omnivore}}, meaning 'all eating' as compared to {{w|carnivore}} or {{w|herbivore}} — only eating meat or plant respectively. Given the combination of animals used to create the omnitaur, it could be expected that it was also an omnivore.

An "omnitaur" would suggest that it would encompass all real and mythical creatures, or perhaps some random assortment of such. In this instance, it appears to be a hybrid, or {{w|Chimera (genetics)|genetic chimera}}, combined from eleven different creatures: {{w|fish}}, {{w|lion}}, {{w|snake}}, {{w|shark}}, {{w|bull}}, {{w|dragon}} (a mythical creature in its own right), {{w|horse}}, {{w|leopard}}, {{w|Sheep|ram}} (male sheep), {{w|human}} and {{w|bird}}. Chimerism is not as uncommon at the genetic level, for example humans have about 145 genes (out of around 30,000) originating from bacteria, other single-celled organisms, and viruses.[https://www.science.org/content/article/humans-may-harbor-more-100-genes-other-organisms] {{w|Mitochondria}}, the powerhouse of the cell, were originally chimeric bacteria {{w|symbiosis|symbionts}}. But chimeras of larger organisms are rare, usually involving fraternal twins whose {{w|zygote}}s or {{w|embryo}}s combined, as in {{w|conjoined twins}} but resulting in less distinct {{w|phenotype|phenotypical}} expression. Artificial human chimeras with viruses, mice, pigs, and monkeys have been the subject of ethics controversies in recent years.[https://www.theguardian.com/technology/2019/aug/11/the-five-chimeras-human-monkey-hybrid-genetic][https://jme.bmj.com/content/45/7/440.abstract]

The title text is a comment by a human whose parents were both omnitaurs. It would be strange and therefore funny that such parents would not produce offspring that was still omnitaur. It suggests that this may be the result of {{w|genetic recombination}}, which is the exchange of genetic material between different organisms leading to production of offspring with combinations of traits that differ from those found in either parent. In this case, seemingly, they inherited ''only'' the human elements of each parent, yet sufficient to develop into a whole human with no missing or chimeric elements. Both omnitaur parents probably had human germlines and compatible reproductive organs

===Mythical phenotypical chimeras===

In addition to the minotaur, many other potential inspirations can be found in mythology, like the {{w|centaur}}, which has the upper body of a human and the lower body and legs of a horse; the {{w|manticore}}, with a body of a lion and human face; a {{w|griffin}}, with a lion's body and a eagle's head; a {{w|mermaid}}, with a lower body of a fish and upper body of a human; a {{w|Hippocampus (mythology)|hippocampus}}, with the upper body of a horse and a lower body of a fish; a {{w|qilin}}, with a body that resembles both a horse and a dragon; or the mythological {{w|chimera (mythology)|chimera}}, for which the genetic chimera is named, which has lion, snake, and goat body parts. Ultimately, there are {{w|List of hybrid creatures in folklore|lots of hybrid creatures in mythology}} with {{w|phenotype}}s combined from multiple animals. Usually, genetic hybridization produces much more smoothly blended phenotypes instead of dividing the body into large distinctly chimeric regions, although {{w|Mosaic (genetics)|mosaicism}} of fur, skin or {{w|Heterochromia iridum|eyes}} can produce notable differences of hue or shade.

===Speculative implications===

In {{w|C. S. Lewis}}' {{w|The Chronicles of Narnia}}, the {{w|Magical_creatures_in_The_Chronicles_of_Narnia#Centaurs|centaurs}} are described as eating two meals — a huge roast meal "to satisfy the man stomach," and a meal of grass, "to satisfy the horse stomach," making it take quite some time for them to eat every morning. Since the omnitaur also has herbivore and omnivore (as well as carnivore) parts, this could further support the supposition that it is an omnivore, and it may similarly need multiple stomachs for these multiple appetites. It is unclear how compatible the various diets of its components would be (not least because 'fish,' 'snake' and 'bird' are quite unspecific, and it's hard to know what a dragon would eat) but it would likely need several meals, taking even longer to eat than the Centaur (plus the bird beak may slow the process down quite a bit.) In any case, a chimera of both warm and cold-blooded organisms seems unlikely to be viable, even at the organ level, let alone with combined surface phenotypes. While chimeras occur in fantasy fiction, they also occur in science fiction, for example as {{w|cyborg}}s.

==== Title text suppositions ====

Since the example depicted seems to be only 1/11 human, the odds of two parents as mentioned in the title text having fully human offspring would simplistically appear to be (1/11)11, or one chance in 285 billion. In reality, each physical part could not be the result of an equal recombinant genetic contribution, because the eleven animal chromosomes vary widely in number and size. Moreover, chimeras composed of multiple animals do not have chimeric children, because even with multiple sets of reproductive organs, the {{w|germline}}s are not combined.
Therefore, both omnitaur parents likely had human germlines and compatible reproductive organs. [https://journals.biologists.com/dev/article/148/12/dev195792/269139/The-road-to-generating-transplantable-organs-from Interspecies blastocyst complementation,] used to create human chimera organs and cell lines in other animals, is usually limited to combining two organisms into one whose offspring are not hybridized if they are even viable, and usually without human germlines or reproductive organs (or human central nervous systems, assuaging a major ethical concern.)

==Transcript==
:[A creature, the Omnitaur, is shown. It is a four legged animal divided into 11 segments, each segment is from a different animal. An arrow goes to each section from a label, most of the labels are above the animal, but the fourth and seventh segments labels are below the animal. The animal has a fish tail and cat like hind legs. The torso is divided into four segments, the first and last of these with scales, but only the last of these also with sharp scales at the top. The second torso segment is white and smooth, the third also white but with hair both above and below, those above merges with the sharp scales of the fourth torso segment. The front legs are horse like, the lower neck is from an animal with dark spots, the upper neck has rams horns, which goes over in the central part of a human head, with ears and hair (drawn like a real human, not like a xkcd stick figure) and finally the front of the face is a bird with its eyes and a beak shown. The labels are given here in the order of the segment of the animal from the back to the front (disregarding weather the label is written above or below the animal:]
:Fish
:Lion
:Snake
:Shark
:Bull
:Dragon
:Horse
:Leopard
:Ram
:Human
:Bird

:[Caption below the panel:]
:The Omnitaur

{{comic discussion}}

[[Category:Animals]]
[[Category:Biology]]

2653: Omnitaur

2022-08-02T10:15:10Z

172.69.33.225: /* Speculative implications */ better but still bad genetics

{{comic
| number = 2653
| date = August 1, 2022
| title = Omnitaur
| image = omnitaur.png
| titletext = "My parents were both omnitaurs, which is how I got interested in recombination," said the normal human.
}}

==Explanation==
{{incomplete|Created by AN OMNITAUR-HUMAN HYBRID - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
Omnitaur is an {{w|anagram}} of {{w|minotaur}}, a mythical creature that was part man, part bull. "{{wiktionary|omni}}" is a prefix that means "all". The word is, for instance, known from the word {{w|omnivore}}, meaning 'all eating' as compared to {{w|carnivore}} or {{w|herbivore}} (only eating meat or plant respectively). Given the combination of animals used to create the omnitaur, it could be expected that it was also an omnivore.

An "omnitaur" would suggest that it would encompass all real and mythical creatures, or perhaps some random assortment of such. In this instance, it appears to be a hybrid, or {{w|Chimera (genetics)|genetic chimera}}, combined from 11 different creatures: {{w|fish}}, {{w|lion}}, {{w|snake}}, {{w|shark}} (also a fish), {{w|bull}}, {{w|dragon}} (a mythical creature in its own right), {{w|horse}}, {{w|leopard}}, {{w|Sheep|ram}} (male sheep), {{w|human}} and {{w|bird}}.

The title text is a comment by a human whose parents were both omnitaurs. It would be strange that such parents would not produce offspring that was still omnitaur. It suggests that this may be the result of {{w|genetic recombination}}, which is the exchange of genetic material between different organisms leading to production of offspring with combinations of traits that differ from those found in either parent. Since we don't understand omnitaur genetics, we can't evaluate whether that is plausible.

===Mythological phenotypical chimeras===

In addition to the minotaur, many other potential inspirations can be found in mythology, like the {{w|centaur}}, which has the upper body of a human and the lower body and legs of a horse; the {{w|manticore}}, with a body of a lion and human face; a {{w|griffin}}, with a lion's body and a eagle's head; a {{w|mermaid}}, with a lower body of a fish and upper body of a human; a {{w|Hippocampus (mythology)|hippocampus}}, with the upper body of a horse and a lower body of a fish; a {{w|qilin}}, with a body that resembles both a horse and a dragon; or the mythological {{w|chimera (mythology)|chimera}}, for which the genetic chimera is named, which has lion, snake, and goat body parts. Ultimately, there are {{w|List of hybrid creatures in folklore|lots of hybrid creatures in mythology}} with {{w|phenotype}}s combined from multiple animals. Usually, genetic hybridization produces much more smoothly blended phenotypes instead of dividing the body into large distinctly chimeric regions.

===Speculative implications===

In {{w|C. S. Lewis}}' {{w|The Chronicles of Narnia}}, the {{w|Magical_creatures_in_The_Chronicles_of_Narnia#Centaurs|centaurs}} are depicted eating two meals - a huge roast meal "to satisfy the man stomach," and a meal of grass, "to satisfy the horse stomach," making it take quite some time for them to eat every morning. Since the omnitaur also has herbivore and omnivore (as well as carnivore) parts, this could further support the supposition that it is an omnivore, and it may similarly need multiple stomachs for these multiple appetites. It is unclear how compatible the various diets of its components would be (not least because 'fish,' 'snake' and 'bird' are quite unspecific, and it's hard to know what a dragon would eat) but it would likely need several meals, taking even longer to eat than the Centaur (plus the bird beak may slow the process down quite a bit.)

Since the example depicted seems to be only 1/11 human, the odds of two parents as mentioned in the title text getting a fully human offspring would simplistically appear to be 1/11 × 1/11 = 1/121, or 0.83%. In reality, each physical part could not be the result of an equal genetic contribution, because the eleven animal chromosomes vary widely in number and size. If omnitaur genetics were governed by such principles, it would be hard to explain how a creature consisting of 11 different animals came into existence in the first place.{{cn}}

==Transcript==
:[A creature, the Omnitaur, is shown. It is a four legged animal divided into 11 segments, each segment is from a different animal. An arrow goes to each section from a label, most of the labels are above the animal, but the fourth and seventh segments labels are below the animal. The animal has a fish tail and cat like hind legs. The torso is divided into four segments, the first and last of these with scales, but only the last of these also with sharp scales at the top. The second torso segment is white and smooth, the third also white but with hair both above and below, those above merges with the sharp scales of the fourth torso segment. The front legs are horse like, the lower neck is from an animal with dark spots, the upper neck has rams horns, which goes over in the central part of a human head, with ears and hair (drawn like a real human, not like a xkcd stick figure) and finally the front of the face is a bird with its eyes and a beak shown. The labels are given here in the order of the segment of the animal from the back to the front (disregarding weather the label is written above or below the animal:]
:Fish
:Lion
:Snake
:Shark
:Bull
:Dragon
:Horse
:Leopard
:Ram
:Human
:Bird

:[Caption below the panel:]
:The Omnitaur

{{comic discussion}}

[[Category:Animals]]
[[Category:Biology]]

Talk:2652: Proxy Variable

2022-07-30T22:30:14Z

172.69.33.225: /* this dude keeps spamming */ fix link

Maybe Randall is commenting on this recent article [https://www.nature.com/articles/s43588-022-00281-6 Nature Computational Science: Automated discovery of fundamental variables hidden in experimental data]?
02:10, 30 July 2022 (UTC)
suggested by a proxy editor

Might be tangentially related to the alleged Alzheimer's disease drug Aduhelm, the anti-amyloid therapy, that did show some success in proxy variable (biomarker), but no success at all in curing the disease or its symptoms (no efficacy), but which got accepted with a huge amount of controversy by NDA (which disregarded its advisory committee’s recommendation against approving Aduhelm). --[[User:JakubNarebski|JakubNarebski]] ([[User talk:JakubNarebski|talk]]) 07:32, 30 July 2022 (UTC)

I removed this paragraph:
:''Proxy variables are of interest to non-scientists as they provide a scientific way to indirectly monitor or improve the complex systems that affect their lives. For example, blood pressure is a causative factor for cardiovascular disease so it can be used as a proxy variable for healthy lifestyle. However, people need to remember that it isn't necessarily the proxy variable alone that is of concern. Atmospheric carbon dioxide is not the only gas released by humanity with global warming potential and other factors affect climate change; and it is not carbon dioxide but the impact of climate change that will cause major social, economic, cultural damage to the future of the planet. ''
because I want to discuss it. The first sentence needs a source, the second and third sentences claim blood pressure is used by non-scientists as a proxy for living a healthy lifestyle, which I'm not sure about on multiple levels, and the fourth and fifth sentences seem like PR for fossil fuel companies. #notallgreenhousegases Nevertheless, I feel as if there are likely one or two good ideas hidden in it. [[Special:Contributions/172.70.206.95|172.70.206.95]] 16:01, 30 July 2022 (UTC)
:I feel like the author doesn't know the work climate scientists go to to avoid using greenhouse gas concentration as a proxy for global warming (all the models of atmospheric water and its forms.) For blood pressure, it's easier to see what was attempted to be gotten at. [[Special:Contributions/172.70.211.90|172.70.211.90]] 16:37, 30 July 2022 (UTC)
::Yes: the ones who dangerously simplify the climate change to "we must stop produce carbon dioxide" are not scientists but politicians. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 16:53, 30 July 2022 (UTC)
:Definitely. We don't even KNOW all factors affecting climate change. Still, the link between rising carbon dioxide and temperature looks much more solid that the link between money spent on fighting climate change and levels of carbon dioxide. ... Wait, you didn't wanted to talk about climate did you? :-) (For record, I always though there are much better reasons to stop using fossil fuels than fighting global warming. Recently, for example, the energetic security from geopolitically problematic regions came under lot of attention.) -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 16:46, 30 July 2022 (UTC)
::I want to talk about climate. Do you think we will be able to transition to carbon neutral and negative technologies in time to avoid the {{w|Jevons paradox}}? [[Special:Contributions/172.70.214.185|172.70.214.185]] 17:00, 30 July 2022 (UTC)
:::The Jevons Paradox exists if the only forces affecting the consumption of a resource are supply and demand. If you're asking about carbon-neutral/negative technological process making sustainable technologies profitable faster than fossil fuel profits grow, then no, there's no hope even before the Jevons Paradox is considered. But if other options are considered, the Jevons Paradox doesn't really apply. (To take an extreme example: It doesn't matter how fuel-efficient internal combustion engines get, they'll never be the preferred choice if their manufacture is banned.) [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 18:14, 30 July 2022 (UTC)
::Only carbon negative technology requires {{w|Carbon-burning_process|5×10^8 K or 50 keV and densities > 3×10^9 kg/m3}}. I think that in the moment we will be using THAT on industrial scale we would be quite desperate. Also, the amount of energy we will need is going to grow unless we reduce population a LOT (like, for example, if all ecological activists would do the carbon responsible thing and commit suicide). Also, more and more of that energy we will need will be specifically electrical energy. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 20:21, 30 July 2022 (UTC)
:::We need to remove 38 gigatons per year, which is only 0.7 milligrams per square centimeter of ocean. Think of the mean depth of the ocean: that square centimeter is very tall. From that perspective, isn't this an easy biological solution? That's only 0.5 micrograms per minute, from the full depth of each square centimeter of ocean, right? [[Special:Contributions/172.70.214.43|172.70.214.43]] 20:47, 30 July 2022 (UTC)

:Everyone thinks this is about pharmacology, and maybe it is. But I've been taking economics courses this semester, so that's what I think of. "We can't measure this factor directly, so we made up a formula that should let us calculate it (if we've measured all relevant factors correctly and all our other assumptions and theories are valid)" is a pretty common thing in that field. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 18:14, 30 July 2022 (UTC)
:: What's the best example, using GDP as a proxy for development? Or something current like using the money supply as a proxy for inflation? [[Special:Contributions/172.70.214.95|172.70.214.95]] 20:19, 30 July 2022 (UTC)

== this dude keeps spamming ==

Sorry for the mild crassness, especially as a new user, but some Nazi f*ck is vandalizing the page. May someone please ban them?{{unsigned ip|172.71.26.59|03:49, 30 July 2022}}

Nah, they're using multiple IPs. Someone could semi-protect it or something but there ain't any mods doing their job it seems.{{unsigned ip|172.70.147.47|03:55, 30 July 2022}}

Where are the mods, anyways?{{unsigned ip|172.71.82.65|03:59, 30 July 2022}}
:You can't always count on volunteer authorities. Even us lowly IP address editors can revert vandalism. [[Special:Contributions/172.69.33.199|172.69.33.199]] 04:09, 30 July 2022 (UTC)
::Yeah nah, we need it semi-protected {{unsigned ip|162.158.162.199|04:13, 30 July 2022}}
::: Funny if that were the goal of the vandalism. [[Special:Contributions/172.70.206.95|172.70.206.95]] 16:03, 30 July 2022 (UTC)
:::: One reason that I don't think it should be the go-to counter-vandalism approach being used. But not for me to say. Whilstsoever I'm capable of intervening ''at least'' as much as any vandal tries to, I support the mod actions (they are there, doing things, BTW).
:::: Without actually tolerating the vandal, we easily outnumber the person concerned (and the very few other spammers/bots that sneak through the clearly effective existing speedbumps) and this means that such nuisance edits are heavily mitigated. If you see the damaged bits then you're either a regular or a very unlucky occasional visitor.
:::: (This morning, I went to revert an ad-spam that I noted had been written over a page-redirect, to be told that someone else had just gotten there before me!)
:::: I've been on far more abused online resources, both web (early days, long before CAPTCHA technology) and elsewhere (having seen how Usenet was both before and after The Eternal September) and the interference here is extraordinarily given the generally open nature of the submission process.
:::: PS. Please do sign your posts ( with <code><nowiki>~~~~</nowiki></code> ), if only for the timestamp that makes the to and fro of conversations more understandable... [[Special:Contributions/162.158.34.221|162.158.34.221]] 19:01, 30 July 2022 (UTC)

:The rant gets replaced within two minutes of each revert. Presumably it's done by bot. We need a mod to take action. [[Special:Contributions/172.70.130.217|172.70.130.217]] 05:15, 30 July 2022 (UTC)
Article has been restored but some idiots keep spamming the page with random things. pls do something mods {{unsigned ip|172.70.147.47|03:59, 30 July 2022}}
:it's not "some idiots" it's all one person using different ips. he posted the exact same covid rant several times. i think he's schizophrenic or something and just really wants to be heard --[[Special:Contributions/172.69.69.40|172.69.69.40]] 04:39, 30 July 2022 (UTC)
::But why here? Like, this is such a weird place to try and be heard, I'm sure even Reddit posts would have more visibility than edits to a webcomic wiki. [[User:NErDysprosium|NErDysprosium]] ([[User talk:NErDysprosium|talk]]) 06:06, 30 July 2022 (UTC)
::: Don't underestimate the importance of the can't-get-jokes demographic for PSYOP recruitment. The invasion of Panama might not even have occurred if it weren't for people distracted by cartoons. [[Special:Contributions/172.69.33.185|172.69.33.185]] 17:16, 30 July 2022 (UTC)

[https://www.explainxkcd.com/wiki/index.php?title=2652:_Proxy_Variable&diff=291433&oldid=291400 The protected version has much less text than the last non-vandalized version.] [[Special:Contributions/172.70.211.90|172.70.211.90]] 20:02, 30 July 2022 (UTC)
: Re "The history of pharmaceutical research is largely a graveyard of failed proxy hypotheses." True, but someone should add that is the reason for experiment registration regulations. [[Special:Contributions/172.70.210.145|172.70.210.145]] 20:17, 30 July 2022 (UTC)
:: I'm placing that version here, in hopes that it can be edited as a proxy for the protected version: [[Special:Contributions/172.69.33.229|172.69.33.229]] 20:28, 30 July 2022 (UTC)
{{cot|Last non-vandalized version of the explanation, as further edited}}
In this comic, [[Hairy]] is discussing use of a proxy variable with [[Cueball]]. In statistics, a {{w|proxy variable}} is used as a stand-in for one or more other variables that are difficult to measure. In order to be useful as such, proxy variables must be correlated with what they are intended to represent. For example, a drug might aim to reduce deaths from a slow-acting disease. But testing if it reduces deaths might take many years, so researchers might test for a proxy outcome instead, like whether it results in loss of bone density or damage to cells. Physicians use blood pressure as one of many proxies for cardiovascular health.

Proxy variables are of interest to non-scientists as they provide a way to indirectly monitor or improve the complex systems that affect their lives. For example, people use local temperature as a rough experiential proxy for the severity of global warming.

Hairy is dismissing the question of whether they are studying the right variable as too expensive to answer. This is deeply ironic and thus satirical, because good {{w|experiment design}} requires sufficient attention to the robustness of all the involved parts of an experiment, even if the expense may be prohibitive. The history of pharmaceutical research is largely a graveyard of failed proxy hypotheses; that is the reason for [https://clinicaltrials.gov/ct2/manage-recs/fdaaa experiment registration regulations.]

Choosing the wrong proxy variable might make the research misleading, irrelevant, or as the title text suggests, answer the wrong question. Separating correlation from {{w|Causality|causation}} is necessary when interpreting proxy variable results to make sure the question they answer is known. Mere correlation instead of {{w|Causal analysis|authentic causation}} yields weaker results. {{w|Exploratory causal analysis}} can assist with finding useful proxy variables, but is difficult for the layperson to interpret and can be misleading, because even if performed correctly, a {{w|combinatorial explosion}} of possible proxy variables can make traditional {{w|statistical significance}} analysis fail, requiring {{w|F-score}}s or similar measures.

The title text's notion of having an answer without knowing the actual question could also be be a reference to the classic comedy science fiction novel {{w|The Hitchhiker's Guide to the Galaxy|The Hitchhiker's Guide to the Galaxy}}, where in one scene Earth turns out to be a supercomputer built for the purpose of figuring out the question for the answer "42."
{{cob}}

Is anyone going to comment that all of us IP editors are listed by our CDN proxy address? [[Special:Contributions/172.69.33.123|172.69.33.123]] 20:44, 30 July 2022 (UTC)

Talk:2652: Proxy Variable

2022-07-30T22:29:31Z

172.69.33.225: Explanation link

Maybe Randall is commenting on this recent article [https://www.nature.com/articles/s43588-022-00281-6 Nature Computational Science: Automated discovery of fundamental variables hidden in experimental data]?
02:10, 30 July 2022 (UTC)
suggested by a proxy editor

Might be tangentially related to the alleged Alzheimer's disease drug Aduhelm, the anti-amyloid therapy, that did show some success in proxy variable (biomarker), but no success at all in curing the disease or its symptoms (no efficacy), but which got accepted with a huge amount of controversy by NDA (which disregarded its advisory committee’s recommendation against approving Aduhelm). --[[User:JakubNarebski|JakubNarebski]] ([[User talk:JakubNarebski|talk]]) 07:32, 30 July 2022 (UTC)

I removed this paragraph:
:''Proxy variables are of interest to non-scientists as they provide a scientific way to indirectly monitor or improve the complex systems that affect their lives. For example, blood pressure is a causative factor for cardiovascular disease so it can be used as a proxy variable for healthy lifestyle. However, people need to remember that it isn't necessarily the proxy variable alone that is of concern. Atmospheric carbon dioxide is not the only gas released by humanity with global warming potential and other factors affect climate change; and it is not carbon dioxide but the impact of climate change that will cause major social, economic, cultural damage to the future of the planet. ''
because I want to discuss it. The first sentence needs a source, the second and third sentences claim blood pressure is used by non-scientists as a proxy for living a healthy lifestyle, which I'm not sure about on multiple levels, and the fourth and fifth sentences seem like PR for fossil fuel companies. #notallgreenhousegases Nevertheless, I feel as if there are likely one or two good ideas hidden in it. [[Special:Contributions/172.70.206.95|172.70.206.95]] 16:01, 30 July 2022 (UTC)
:I feel like the author doesn't know the work climate scientists go to to avoid using greenhouse gas concentration as a proxy for global warming (all the models of atmospheric water and its forms.) For blood pressure, it's easier to see what was attempted to be gotten at. [[Special:Contributions/172.70.211.90|172.70.211.90]] 16:37, 30 July 2022 (UTC)
::Yes: the ones who dangerously simplify the climate change to "we must stop produce carbon dioxide" are not scientists but politicians. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 16:53, 30 July 2022 (UTC)
:Definitely. We don't even KNOW all factors affecting climate change. Still, the link between rising carbon dioxide and temperature looks much more solid that the link between money spent on fighting climate change and levels of carbon dioxide. ... Wait, you didn't wanted to talk about climate did you? :-) (For record, I always though there are much better reasons to stop using fossil fuels than fighting global warming. Recently, for example, the energetic security from geopolitically problematic regions came under lot of attention.) -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 16:46, 30 July 2022 (UTC)
::I want to talk about climate. Do you think we will be able to transition to carbon neutral and negative technologies in time to avoid the {{w|Jevons paradox}}? [[Special:Contributions/172.70.214.185|172.70.214.185]] 17:00, 30 July 2022 (UTC)
:::The Jevons Paradox exists if the only forces affecting the consumption of a resource are supply and demand. If you're asking about carbon-neutral/negative technological process making sustainable technologies profitable faster than fossil fuel profits grow, then no, there's no hope even before the Jevons Paradox is considered. But if other options are considered, the Jevons Paradox doesn't really apply. (To take an extreme example: It doesn't matter how fuel-efficient internal combustion engines get, they'll never be the preferred choice if their manufacture is banned.) [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 18:14, 30 July 2022 (UTC)
::Only carbon negative technology requires {{w|Carbon-burning_process|5×10^8 K or 50 keV and densities > 3×10^9 kg/m3}}. I think that in the moment we will be using THAT on industrial scale we would be quite desperate. Also, the amount of energy we will need is going to grow unless we reduce population a LOT (like, for example, if all ecological activists would do the carbon responsible thing and commit suicide). Also, more and more of that energy we will need will be specifically electrical energy. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 20:21, 30 July 2022 (UTC)
:::We need to remove 38 gigatons per year, which is only 0.7 milligrams per square centimeter of ocean. Think of the mean depth of the ocean: that square centimeter is very tall. From that perspective, isn't this an easy biological solution? That's only 0.5 micrograms per minute, from the full depth of each square centimeter of ocean, right? [[Special:Contributions/172.70.214.43|172.70.214.43]] 20:47, 30 July 2022 (UTC)

:Everyone thinks this is about pharmacology, and maybe it is. But I've been taking economics courses this semester, so that's what I think of. "We can't measure this factor directly, so we made up a formula that should let us calculate it (if we've measured all relevant factors correctly and all our other assumptions and theories are valid)" is a pretty common thing in that field. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 18:14, 30 July 2022 (UTC)
:: What's the best example, using GDP as a proxy for development? Or something current like using the money supply as a proxy for inflation? [[Special:Contributions/172.70.214.95|172.70.214.95]] 20:19, 30 July 2022 (UTC)

== this dude keeps spamming ==

Sorry for the mild crassness, especially as a new user, but some Nazi f*ck is vandalizing the page. May someone please ban them?{{unsigned ip|172.71.26.59|03:49, 30 July 2022}}

Nah, they're using multiple IPs. Someone could semi-protect it or something but there ain't any mods doing their job it seems.{{unsigned ip|172.70.147.47|03:55, 30 July 2022}}

Where are the mods, anyways?{{unsigned ip|172.71.82.65|03:59, 30 July 2022}}
:You can't always count on volunteer authorities. Even us lowly IP address editors can revert vandalism. [[Special:Contributions/172.69.33.199|172.69.33.199]] 04:09, 30 July 2022 (UTC)
::Yeah nah, we need it semi-protected {{unsigned ip|162.158.162.199|04:13, 30 July 2022}}
::: Funny if that were the goal of the vandalism. [[Special:Contributions/172.70.206.95|172.70.206.95]] 16:03, 30 July 2022 (UTC)
:::: One reason that I don't think it should be the go-to counter-vandalism approach being used. But not for me to say. Whilstsoever I'm capable of intervening ''at least'' as much as any vandal tries to, I support the mod actions (they are there, doing things, BTW).
:::: Without actually tolerating the vandal, we easily outnumber the person concerned (and the very few other spammers/bots that sneak through the clearly effective existing speedbumps) and this means that such nuisance edits are heavily mitigated. If you see the damaged bits then you're either a regular or a very unlucky occasional visitor.
:::: (This morning, I went to revert an ad-spam that I noted had been written over a page-redirect, to be told that someone else had just gotten there before me!)
:::: I've been on far more abused online resources, both web (early days, long before CAPTCHA technology) and elsewhere (having seen how Usenet was both before and after The Eternal September) and the interference here is extraordinarily given the generally open nature of the submission process.
:::: PS. Please do sign your posts ( with <code><nowiki>~~~~</nowiki></code> ), if only for the timestamp that makes the to and fro of conversations more understandable... [[Special:Contributions/162.158.34.221|162.158.34.221]] 19:01, 30 July 2022 (UTC)

:The rant gets replaced within two minutes of each revert. Presumably it's done by bot. We need a mod to take action. [[Special:Contributions/172.70.130.217|172.70.130.217]] 05:15, 30 July 2022 (UTC)
Article has been restored but some idiots keep spamming the page with random things. pls do something mods {{unsigned ip|172.70.147.47|03:59, 30 July 2022}}
:it's not "some idiots" it's all one person using different ips. he posted the exact same covid rant several times. i think he's schizophrenic or something and just really wants to be heard --[[Special:Contributions/172.69.69.40|172.69.69.40]] 04:39, 30 July 2022 (UTC)
::But why here? Like, this is such a weird place to try and be heard, I'm sure even Reddit posts would have more visibility than edits to a webcomic wiki. [[User:NErDysprosium|NErDysprosium]] ([[User talk:NErDysprosium|talk]]) 06:06, 30 July 2022 (UTC)
::: Don't underestimate the importance of the can't-get-jokes demographic for PSYOP recruitment. The invasion of Panama might not even have occurred if it weren't for people distracted by cartoons. [[Special:Contributions/172.69.33.185|172.69.33.185]] 17:16, 30 July 2022 (UTC)

[https://www.explainxkcd.com/wiki/index.php?title=2652:_Proxy_Variable&diff=291433&oldid=291400 The protected version has much less text than the last non-vandalized version.] [[Special:Contributions/172.70.211.90|172.70.211.90]] 20:02, 30 July 2022 (UTC)
: Re "The history of pharmaceutical research is largely a graveyard of failed proxy hypotheses." True, but someone should add that is the reason for experiment registration regulations. [[Special:Contributions/172.70.210.145|172.70.210.145]] 20:17, 30 July 2022 (UTC)
:: I'm placing that version here, in hopes that it can be edited as a proxy for the protected version: [[Special:Contributions/172.69.33.229|172.69.33.229]] 20:28, 30 July 2022 (UTC)
{{cot|Last non-vandalized version of the explanation, as further edited}}
In this comic, [[Hairy]] is discussing use of a proxy variable with [[Cueball]]. In statistics, a {{w|proxy variable}} is used as a stand-in for one or more other variables that are difficult to measure. In order to be useful as such, proxy variables must be correlated with what they are intended to represent. For example, a drug might aim to reduce deaths from a slow-acting disease. But testing if it reduces deaths might take many years, so researchers might test for a proxy outcome instead, like whether it results in loss of bone density or damage to cells. Physicians use blood pressure as one of many proxies for cardiovascular health.

Proxy variables are of interest to non-scientists as they provide a way to indirectly monitor or improve the complex systems that affect their lives. For example, people use local temperature as a rough experiential proxy for the severity of global warming.

Hairy is dismissing the question of whether they are studying the right variable as too expensive to answer. This is deeply ironic and thus satirical, because good {{w|experiment design}} requires sufficient attention to the robustness of all the involved parts of an experiment, even if the expense may be prohibitive. The history of pharmaceutical research is largely a graveyard of failed proxy hypotheses; that is the reason for [https://clinicaltrials.gov/ct2/manage-recs/fdaaa experiment registration regulations.

Choosing the wrong proxy variable might make the research misleading, irrelevant, or as the title text suggests, answer the wrong question. Separating correlation from {{w|Causality|causation}} is necessary when interpreting proxy variable results to make sure the question they answer is known. Mere correlation instead of {{w|Causal analysis|authentic causation}} yields weaker results. {{w|Exploratory causal analysis}} can assist with finding useful proxy variables, but is difficult for the layperson to interpret and can be misleading, because even if performed correctly, a {{w|combinatorial explosion}} of possible proxy variables can make traditional {{w|statistical significance}} analysis fail, requiring {{w|F-score}}s or similar measures.

The title text's notion of having an answer without knowing the actual question could also be be a reference to the classic comedy science fiction novel {{w|The Hitchhiker's Guide to the Galaxy|The Hitchhiker's Guide to the Galaxy}}, where in one scene Earth turns out to be a supercomputer built for the purpose of figuring out the question for the answer "42."
{{cob}}

Is anyone going to comment that all of us IP editors are listed by our CDN proxy address? [[Special:Contributions/172.69.33.123|172.69.33.123]] 20:44, 30 July 2022 (UTC)

2651: Air Gap

2022-07-29T07:47:36Z

172.69.33.225: /* Explanation */ copyedit

{{comic
| number = 2651
| date = July 27, 2022
| title = Air Gap
| image = air_gap.png
| titletext = You can still do powerline networking, but the bitrate does drop a little depending on the lightbulb warmup and cooldown delay.
}}

==Explanation==
{{incomplete|Created by an AIR GAP-PROTECTED BOT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The comic conflates the concepts of computer network security and home electrical power safety to comical effect, resulting in a deeply impractical and ineffective proposed solution. In {{w|computer security}}, {{w|Air_gap_(networking)|air-gapping}} is a measure used to secure sensitive computers or networks of computers by isolating them from the broader internet, since computers are often breached through the internet. {{w|Energy security}} is the concern, typically expressed at a national, rather than domestic, level, with ensuring sufficient affordable and reliable sources of energy to meet demand. It has become an increasingly pressing issue due to the use of energy supplies as a geopolitical tool, exacerbated by the drive to reorient energy generation away from polluting fossil fuels. {{w|Lightning protection}} is a home fire safety practice. {{w|Power analysis}} in computer security is a form of {{w|side-channel attack}} where the attacker observes and/or manipulates the power use by a device for some reason — for example, to gain insight into an otherwise protected process, or to exfiltrate information without having to use a monitored network connection. Power analysis in fire safety means measuring the {{w|power factor}}, volts, and watts of electrical circuits.

[[Randall]] suggests increasing the security of your home power supply by air-gapping it, using the light from a powered lightbulb to power a solar panel which then supplies power to the home, such that there is no physical wired connection between your house and the public electricity network. This is a large and very inefficient version of an {{w|opto-isolator}}, but would protect equipment behind the solar panel from power surges such as lightning strikes (which in an improperly {{w|Ground (electricity)|grounded}} home could blow out the light bulb, but not so easily risk frying the equipment beyond the photovoltaic cell and its inverter). Due to its inefficiency, this approach would waste substantial amounts of energy, and therefore actually worsen problems of energy security.

The title text mentions that a computer can still be connected to the internet via the power supply by using {{w|powerline networking}}, but that the bandwidth would be reduced by the lightbulb's warmup and cooldown delay, which would reduce the signalling rate the lightbulb could accomplish to no more than hundreds of bits per second, if that, for incandescent bulbs. However, as the solar panel cannot emit signals, the unidirectional link would be useless for traditional networking, because essential requests and acknowledgments would be unable to travel from behind the solar panel to the lightbulb. Early {{w|communication satellite}} systems for data networking used high bandwidth unidirectional {{w|downlink}}s paired with low bandwidth ground telephone lines for outbound transmission, but such network configurations remain very uncommon.{{cn}}

Randall is seemingly unaware of {{w|isolation transformer}}s which serve to allow the transfer of power via changing {{w|electromagnetic field}}s without an electrically conductive path. Most transformers, including "wall wart" power adapters, provide this form of isolation and protect devices from noise, voltage transients, most surges, and shock hazard, with fuses and other circuitry. They also limit powerline networking bandwidth by filtering high frequencies.

===Why this would be inefficient and impractical===

* Even energy-efficient LED lightbulbs are only about 35% efficient at turning electricity into light, with the rest emitted as heat.
* The air gap is inefficient at passing light from the bulb to the panel, causing some of the light from the lightbulb to be lost to places other than the solar panel, such as to the eye of the observer. A rough guess might be that in the configuration shown less than 60% of light produced will reach the panel, even assuming a perfect reflector.
* Solar panels are generally around 20% efficient at converting light into electricity, with claims at the world record from a single light source at around 40%.

All these efficiency-reducing factors, and others, multiply together. Therefore, only a small fraction of energy would be transmitted between the two ends of the air gap, making the circuit require much more electricity and be much less cost-efficient. (for instance the generous assumptions above lead to 96% of the power being lost)

The solution as illustrated shows a single apparently-normal lightbulb, the highest-powered of which use under 50 Watts of power. Given the above efficiency issues, it would provide less than five Watts of power to a home which would typically require over a thousand Watts.

==Transcript==
:[A solar panel and a lamp are pictured together, with the lamp pointed at the solar panel, and electronic equipment connected to the solar panel. Lines point outward from the bulb, indicating that it is shining.]
:[Caption below the panel]
:Energy tip: Increase the security of your home power supply by installing an air gap.
{{comic discussion}}

[[Category:Tips]]
[[Category:Computer security]]

2651: Air Gap

2022-07-29T07:46:05Z

172.69.33.225: /* Explanation */ per talk

{{comic
| number = 2651
| date = July 27, 2022
| title = Air Gap
| image = air_gap.png
| titletext = You can still do powerline networking, but the bitrate does drop a little depending on the lightbulb warmup and cooldown delay.
}}

==Explanation==
{{incomplete|Created by an AIR GAP-PROTECTED BOT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The comic conflates the concepts of computer network security and home electrical power safety to comical effect, resulting in a deeply impractical and ineffective proposed solution. In {{w|computer security}}, {{w|Air_gap_(networking)|air-gapping}} is a measure used to secure sensitive computers or networks of computers by isolating them from the broader internet, since computers are often breached through the internet. {{w|Energy security}} is the concern, typically expressed at a national, rather than domestic, level, with ensuring sufficient affordable and reliable sources of energy to meet demand. It has become an increasingly pressing issue due to the use of energy supplies as a geopolitical tool, exacerbated by the drive to reorient energy generation away from polluting fossil fuels. {{w|Lightning protection}} is a home fire safety practice. {{w|Power analysis}} in computer security is a form of {{w|side-channel attack}} where the attacker observes and/or manipulates the power use by a device for some reason — for example, to gain insight into an otherwise protected process, or to exfiltrate information without having to use a monitored network connection. Power analysis in fire safety means measuring the {{w|power factor}}, volts, and watts of electrical circuits.

[[Randall]] suggests increasing the security of your home power supply by air-gapping it, using the light from a powered lightbulb to power a solar panel which then supplies power to the home, such that there is no physical wired connection between your house and the public electricity network. This is a large and very inefficient version of an {{w|opto-isolator}}, but would protect equipment behind the solar panel from power surges such as lightning strikes (which in an improperly {{w|Ground (electricity)|grounded}} home could blow out the light bulb, but not so easily risk frying the equipment beyond the photovoltaic cell and its inverter). Due to its inefficiency, this approach would waste substantial amounts of energy, and therefore actually worsen problems of energy security.

The title text mentions that a computer can still be connected to the internet via the power supply by using {{w|powerline networking}}, but that the bandwidth would be reduced by the lightbulb's warmup and cooldown delay, which would reduce the signalling rate the lightbulb could accomplish to no more than hundreds of bits per second, if that, for incandescent bulbs. However, this is incorrect, as the solar panel cannot emit signals, and an unidirectional link is useless for traditional networking, because necessary requests and acknowledgments would be unable to travel from behind the solar panel to the lightbulb. Early {{w|communication satellite}} systems for data networking used high bandwidth unidirectional {{w|downlink}}s paired with low bandwidth ground telephone lines for outbound transmission, but such network configurations remain very uncommon.{{cn}}

Randall is seemingly unaware of {{w|isolation transformer}}s which serve to allow the transfer of power via changing {{w|electromagnetic field}}s without an electrically conductive path. Most transformers, including "wall wart" power adapters, provide this form of isolation and protect devices from noise, voltage transients, most surges, and shock hazard, with fuses and other circuitry. They also limit powerline networking bandwidth by filtering high frequencies.

===Why this would be inefficient and impractical===

* Even energy-efficient LED lightbulbs are only about 35% efficient at turning electricity into light, with the rest emitted as heat.
* The air gap is inefficient at passing light from the bulb to the panel, causing some of the light from the lightbulb to be lost to places other than the solar panel, such as to the eye of the observer. A rough guess might be that in the configuration shown less than 60% of light produced will reach the panel, even assuming a perfect reflector.
* Solar panels are generally around 20% efficient at converting light into electricity, with claims at the world record from a single light source at around 40%.

All these efficiency-reducing factors, and others, multiply together. Therefore, only a small fraction of energy would be transmitted between the two ends of the air gap, making the circuit require much more electricity and be much less cost-efficient. (for instance the generous assumptions above lead to 96% of the power being lost)

The solution as illustrated shows a single apparently-normal lightbulb, the highest-powered of which use under 50 Watts of power. Given the above efficiency issues, it would provide less than five Watts of power to a home which would typically require over a thousand Watts.

==Transcript==
:[A solar panel and a lamp are pictured together, with the lamp pointed at the solar panel, and electronic equipment connected to the solar panel. Lines point outward from the bulb, indicating that it is shining.]
:[Caption below the panel]
:Energy tip: Increase the security of your home power supply by installing an air gap.
{{comic discussion}}

[[Category:Tips]]
[[Category:Computer security]]

Talk:2651: Air Gap

2022-07-29T07:39:05Z

172.69.33.225: Trying to remember Leech lattice encoding bandwidth

Worth noting that this is a large and inefficient version of an [https://en.wikipedia.org/wiki/Opto-isolator opto-isolator] [[Special:Contributions/108.162.221.79|108.162.221.79]] 05:37, 28 July 2022 (UTC)

: Incandescent light bulb (assuming it the lamp does not use LED in the shape of light bulb) is not only less efficient than diode, but also much slower to warm up and cool down - it usually is much more sensitive to rapid switching, and has shorter life counted in the number of on/off cycles. --[[User:JakubNarebski|JakubNarebski]] ([[User talk:JakubNarebski|talk]]) 07:45, 28 July 2022 (UTC)
:: There’s not even any indication that the bulb is shaped like an incandescent bulb. Only that the front of the light (either fixture or bulb) is a convex curve. For all we know that could be a lens or diffuser in front of a flat LED. Whoever wrote that needs to go back and walk, because the claim that an incandescent bulb is depicted is quite simply false.[[Special:Contributions/172.71.142.89|172.71.142.89]] 10:35, 28 July 2022 (UTC)
::: The warmup and cooldown delays mentioned in the title text must imply an incandescent bulb, mustn't they? [[Special:Contributions/172.70.210.145|172.70.210.145]] 03:29, 29 July 2022 (UTC)

: I don't think it's less or more efficient than an opto-isolator, it essentially ''is'' just an opto-isolator. But an opto-isolator isn't supposed to be energy efficient to begin with; it's only designed to transmit data between circuits, not power. So the output side only needs to generate enough voltage/current to change the state of a transistor, and the input side only needs to generate enough light for the output side to do that. The voltages and currents involved aren't comparable to power circuits. --[[User:NeatNit|NeatNit]] ([[User talk:NeatNit|talk]]) 08:14, 28 July 2022 (UTC)

: By the way, wikipedia links can be written like this: <code><nowiki>[[wikipedia:opto-isolator|]]</nowiki></code> result: [[wikipedia:opto-isolator|opto-isolator]] (the final <code>|</code> automatically gets expanded to the article title without the <code>wikipedia:</code> prefix). --[[User:NeatNit|NeatNit]] ([[User talk:NeatNit|talk]]) 08:26, 28 July 2022 (UTC)
::Or more often here on ExplainXkcd, <code><nowiki>{{w|article}}</nowiki></code> or <code><nowiki>{{w|article|anchor text}}</nowiki></code>. [[Special:Contributions/172.70.206.213|172.70.206.213]] 08:35, 28 July 2022 (UTC)

::: Yes, thanks :) although there is a tiiiiiny advantage to the direct link without the template (the way I said), <code><nowiki>[[wikipedia:Pipe (computing)|]]</nowiki></code> becomes [[wikipedia:Pipe (computing)|Pipe]] whereas <code><nowiki>{{w|Pipe (computing)}}</nowiki></code> becomes {{w|Pipe (computing)}}. The pipe trick strips out the disambiguation parts of the title according to [[Wikipedia:Help:Pipe trick|some rules]]. --[[User:NeatNit|NeatNit]] ([[User talk:NeatNit|talk]]) 12:30, 28 July 2022 (UTC)
:::: Why not <code><nowiki>{{w|Pipe (computing)|pipe}}</nowiki></code>? [[Special:Contributions/172.70.214.95|172.70.214.95]] 15:18, 28 July 2022 (UTC)

It is missing that air-gapping the power supply would protect your home from voltage surges in the power network caused by lightning strikes. Depending where the lightning hits the power network, there may be no fuses protecting your home or single fuses may fail to protect you. --[[Special:Contributions/172.70.246.115|172.70.246.115]] 07:57, 28 July 2022 (UTC)
:That is true. But the suggestion that this might have anything to do with general energy security (as is currently very prominent in the explanation) is entirely unconvincing to me.
::I also originally thought this was the main joke, until seeing the title text about bit rate. Certainly it's worth mentioning, even if this isn't the main joke, since it would actually work, with a wide enough gap, ideally with a vacuum in between.

Incandescent light bulbs convert most of their energy to infrared light. There are solar cells that work in this infrared spectrum, so this might not be all that inefficient as stated. This should in fact be a lot more efficient than any LED+visible spectrum based panel, as incandescent bulbs are very efficient in converting electricity into infrared light, much more than LEDs most likely will ever be.
The (mostly) omnidirectionality of the light source might be an even bigger loss, as most of the light (however efficient) does not even reach the panel.
And regarding sending data over this construct: As soon as there's a 0V state (which will be the case as soon as the transmission starts, due to some form of manchester coding, regardless of it being a 0 or 1 bit) the PC behind the solar panel would not only have a data transmission problem :)
(With incandescent bulb, that is. A LED 0V might be short enough for capacitors in the PC's power supply to buffer it, if it is only at 50%(+PSU conversion loss) load max, as manchester coded signals per definition have a duty cycle of 50% to keep the DC bias at 0V)
[[Special:Contributions/172.68.51.204|172.68.51.204]] 08:26, 28 July 2022 (UTC)

What is the highest wattage commercial opto-isolator, and how can I get one mounted from the ceiling in my bedroom? [[Special:Contributions/172.70.207.8|172.70.207.8]] 14:10, 28 July 2022 (UTC)

I wonder if it's worth noting the significant understatement within the title text, where it says "the bitrate does drop a little" in contrast to the severe and drastic drop in bitrate that would actually occur, especially in light of today's typical Internet speeds. It might not be worth mentioning, but it struck me as a humorous understatement of the true impact. [[User:Ianrbibtitlht|Ianrbibtitlht]] ([[User talk:Ianrbibtitlht|talk]]) 14:25, 28 July 2022 (UTC)
:We don't know if the light bulb is incandescent or LED, so we can't describe the bandwidth drop other than in very general terms. [[Special:Contributions/172.70.211.88|172.70.211.88]] 15:34, 28 July 2022 (UTC)
:: It's safe to say the warmup and cooldown delays mentioned in the title text imply an incandescent bulb. Is there a standard or average response time for household bulb incandescent filaments? [[Special:Contributions/172.70.214.43|172.70.214.43]] 03:33, 29 July 2022 (UTC)
::: Maybe this helps? https://ieeexplore.ieee.org/abstract/document/5625426 [[Special:Contributions/172.70.142.21|172.70.142.21]] 06:51, 29 July 2022 (UTC)
:::: Yes! [https://tigerprints.clemson.edu/cgi/viewcontent.cgi?article=1961&context=all_theses Figure 1.10 seems to suggest that frequencies above 10 Hz are filtered,] and that seems consistent with Figure 3.14, in that recovery time is a tenth of a second (though drop-off "cooldown" time is much shorter.) So if I remember my {{w|Binary Golay code|modem math,}} even with the most sophisticated coding, anything more than 640 bits per second should be impossible. [[Special:Contributions/172.69.33.225|172.69.33.225]] 07:39, 29 July 2022 (UTC)

I'm almost tempted to suggest that this should be an (honourary) addition to the Cursed Connectors comic-collection. [[Special:Contributions/172.71.94.187|172.71.94.187]] 14:56, 28 July 2022 (UTC)

Yes, solar panels can transform electrical into electromagnetic signals. It is more on the side of the incandescent bulb that the capability to receive and forward these signals is missing. My source: https://www.youtube.com/watch?v=TGUteH93xNo
[[User:Torge|Torge]] ([[User talk:Torge|talk]]) 15:11, 28 July 2022 (UTC)
: Interesting! [[Special:Contributions/172.70.142.21|172.70.142.21]] 06:51, 29 July 2022 (UTC)

Nobody caught on that powerline networking is about sending data through powerlines? or that a crude opto-isolation setup could effectively scrub it? Where my networking geeks at? I am disappoint [[Special:Contributions/172.69.71.51|172.69.71.51]] 15:19, 28 July 2022 (UTC)

An electrical engineer here: perhaps we should mention that the box pictured after the solar panel must be an inverter? The lightbulb/solar panel pair will be acting as a rectifier, putting out purely positive voltage, and to get back to AC to run appliances on there would need to be an inverter.
[[Special:Contributions/172.69.62.49|172.69.62.49]] 01:10, 29 July 2022 (UTC)
:Can you please help out with the argument about rectifier efficiency at [[2642]]? [[Special:Contributions/172.70.214.95|172.70.214.95]] 03:24, 29 July 2022 (UTC)

Most of the bulbs in my house (before compact flourescent and LED) were 75 Watt or 100 Watt. 50 Watt would be a very dim bulb.
: Mice wouldn't agree. [[Special:Contributions/172.70.214.43|172.70.214.43]] 05:05, 29 July 2022 (UTC)

2651: Air Gap

2022-07-28T12:14:28Z

172.69.33.225: /* Explanation */ typo

2651: Air Gap

2022-07-28T12:12:38Z

172.69.33.225: /* Explanation */ unidirectional data links aren't completely unheard of

User:SqueakSquawk4

2022-07-24T16:26:47Z

172.69.33.225: taking the liberty to format the atomic and isotope numbers

<noinclude>I have done a bunch of things! I wrote most of explanation for [[2527]], and created (Badly) the page for [[2616]]. I think I screwed that last one up though. I will add more later.

----

Hello people! You are probably looking for how I calculated the yield of a baloon made of Helium-2. Well you're in luck!

Calculation time! (Sorry). </noinclude>Helium 2 has a {{w|Half-life}} of {{w|Isotopes_of_helium#List_of_isotopes|roughly 10^-9 seconds, or one nanosecond}}, and a mean life of [https://www.omnicalculator.com/chemistry/half-life roughly 1.44 nanoseconds]. For context, light travels at [https://www.google.com/search?q=1+speed+of+light+to+cm%2Fnanosecond roughly 30cm per nanosecond]. This means that on a human scale the energy is released all at once, and we only have to calculate total energy released, and not worry about time taken.

Helium-2 decays through 99.99% {{w|proton emission}}. For simplicity's sake, we'll call that 100%. Helium-2 is formed from helium-1, helium-1, and 1.25 MegaElectronvolts, or as an equation, <table style="display: inline-table; line-height: 0.6em; vertical-align: middle; font-size:7pt; text-size-adjust: none;"><tr><td>1</td></tr><tr><td>1</td></tr></table>He + <table style="display: inline-table; line-height: 0.6em; vertical-align: middle; font-size:7pt; text-size-adjust: none;"><tr><td>1</td></tr><tr><td>1</td></tr></table>He + 1.25 {{w|MeV}} = <table style="display: inline-table; line-height: 0.6em; vertical-align: middle; font-size:7pt; text-size-adjust: none;"><tr><td>2</td></tr><tr><td>2</td></tr></table>He. It therefore follows that decay from a Helium 2 atom to a helium 1 atom would release 1.25 MeV.

A moderately-sized balloon [https://www.balloonartonline.com/balloons-sizes-and-types-2/ might have a diameter of 12 inches]. Some calculations give this a volume of roughyly 14.83 litres (Assuming a spherical balloon). If the balloon is at 1 atmosphere of pressure at 25 degrees celsius, then [https://www.omnicalculator.com/chemistry/molar-mass-of-gas there would be 0.6058 mol] in the balloon, mean that there is 0.6058 * 6.022 × 10^23 atoms, or [https://www.convertunits.com/from/mol/to/atoms 364,821,332,070,000,040,000,000 atoms].

To recap, a helium-2 atom decaying results in 1.35 MeV of energy, and there are roughly 364.821 sextillion atoms in a balloon.

Every atom will create 1.5 MeV of energy, and therefore 364.821 sextillion atoms will create [https://www.google.com/search?client=firefox-b-d&q=364%2C821%2C332%2C070%2C000%2C040%2C000%2C000*1.35 364.821*1.35 sextillion, or 492.5088 sextillion MeV]. Interestingly, this is equal to {{w|Names of large numbers|492.5 nonillion electron volts}}, or {{w|Metric prefix|4.295 MegaYottaElectronvolts}}

492.5088 sextillion MegaElectonvolts is also equal to [https://www.google.com/search?q=492508800000000000000000+MeV+to+Megajoules roughly 78,909 Megajoules,] or [https://www.google.com/search?q=78908.6057416272+Megajoules+to+Tons+of+TNT 18.86 tons of TNT equivalent]<noinclude>

This is rather big. but not massively so. The smallest nuclear bomb, the {{w|W54}}, had a yield of between 10 and 1000 {{w|TNT equivalent|tons of TNT}}. The largest conventional bomb, the {{w|GBU-43/B MOAB}}, has a yield of roughly 11 tons. The {{w|M67 grenade}} uses 180 grams of {{w|Composition B|TNT-RDX mixture}}. So while the Helium-2 baloon bomb would be larger than all conventional bombs, it would still be smaller than most nukes.

----

I have a discussion page now!

</noinclude>

Template:cot

2022-07-24T14:20:23Z

172.69.33.225: Forgot the default and figured out includonly

<noinclude>Use this in conjunction with the <nowiki>{{cob}}</nowiki> template to clamp down on flame wars that go off topic.

Usage:

<nowiki>{{cot|hidden}}</nowiki>
YOU SUCK. -Anonymous user
:WHY DID YOU INSULT ME. -Another anonymous user
<nowiki>{{cob}}</nowiki>

Which gives us:
{{cot|hidden}}
YOU SUCK. -Anonymous user
:WHY DID YOU INSULT ME. -Another anonymous user
{{cob}}
</noinclude><includeonly>{{Collapse top|1={{{1|Collapsed content}}}}}</includeonly>

2649: Physics Cost-Saving Tips

2022-07-24T10:07:43Z

172.69.33.225: /* Explanation */ source

{{comic
| number = 2649
| date = July 22, 2022
| title = Physics Cost-Saving Tips
| image = physics_cost_saving_tips.png
| titletext = I got banned from the county fair for handing out Helium-2 balloons. Apparently the instant massive plasma explosions violated some local ordinance or something.
}}

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

This comic is another one of [[Randall|Randall's]] [[:Category:Tips|Tips]], this time to reduce costs or provide something for free for physicists to save money on their research. None of these would provide any real advantages even when possible to implement. It continues the previous [[2648: Chemicals]] comic's jocular theme of tricks to supposedly save money based on misinterpretations of science. Obtaining money from physics experiments was also described in [[2007: Brookhaven RHIC]].

{| class="wikitable"
|-
! scope="col" |Cost-Saving Tip
! scope="col" |Explanation
|-
|Try replacing regular vectors with pseudovectors whenever possible
|[[File:Torque animation.gif|frame|right|Relationship of pseudovectors {{w|torque}} ('''τ''') and {{w|angular momentum}} ('''L''') to "regular" Euclidian vectors {{w|Position (vector)|position}} ('''r'''), {{w|force}} ('''F'''), and {{w|momentum}} ('''p''') in an oscillatory rotating system.]]

The prefix "pseudo-" refers to an inauthentic variation of something. Fakes are usually cheaper than their original brand-name product, while often working just as well, so the comic implies a {{w|pseudovector}} could be a less expensive substitute for a regular vector. On the contrary, pseudovectors, or axial vectors, are distinct from regular {{w|Euclidean vector}}s, the former usually being involved with rotation or physical effects that share properties with rotation, similar to the relationship between angles and lengths. Pseudovectors are formed from the {{w|cross product}}s of Euclidean vectors, in three dimensions, and while similar to Euclidean vectors, there is no physical meaning to their specific direction, only their magnitude and portions of their position. For example, {{w|angular momentum}} is described by a pseudovector, labeled '''L''' in the comic, {{w|Normal (geometry)|normal}} to the {{w|plane of rotation}}, originating from the center of rotation, with magnitude equal to the angular velocity of rotation '''ω''' multiplied by the {{w|moment of inertia}} '''I'''. (The comic's diagram is drawn according to very uncommon {{w|Right-hand rule#Coordinates|left-handed coordinates}} instead of the standard {{w|right-hand rule}}. Randall is right-handed.[https://www.youtube.com/watch?v=j1tcyEo2tQk&t=28s])
|-
|A square wave can be broken down into an infinite supply of valuable sine waves
|{{w|Fourier analysis}} can decompose any periodic function into a series of {{w|sine wave}}s. A {{w|square wave}} can thereby be represented as the sum of an infinite series of sine waves. However, the sine waves are not removed or separated individually, so such a {{w|Fourier transform}} does not produce a "supply" of sine waves for practical use in any tasks other than analysis, and as abstract mathematical objects exempt from the laws of supply and demand, their value is similarly limited.
|-
|Cut waste by buying lighter isotopes that don't have any dead-weight neutrons
|Chemical elements are identified by the number of protons in each atomic nucleus, equal to the number of electrons in their shell (unless the atom is ionized), which dictates most of their chemical behavior. {{w|Isotopes}} are variants of the element with different numbers of neutrons in the nucleus, among which chemical behavior is usually nearly identical. The comic suggests that the neutrons don't serve any useful purpose, so, in theory, if purchasing an element by weight, and its isotopes have the same price per unit weight, then you can save money by buying isotopes with no neutrons at all. In reality, the cost per unit weight for material containing a larger concentration of normally rare isotopes, such as {{w|heavy water}} or {{w|enriched uranium}}, is much higher than the cost of material containing isotopes in their ordinary proportions. (An exception is {{w|depleted uranium}}, which costs less than regular uranium because it is a byproduct of the production of enriched uranium.) In addition, a certain range of neutron quantity is needed to keep atoms stable, as atoms with too many or too few neutrons will decay more quickly than the common isotopes. The image shown is helium-2, an {{w|Isotopes of helium|isotope of helium}} which has a half-life of less than a nanosecond. It decays into two ionized hydrogen atoms, releasing a large amount of energy—hence the explosion mentioned in the title text.
|-
|Conductors are a great source of free electrons (may carry charges)
|{{w|Charge carrier|Free}} {{w|electron}}s are electrons that are not tightly bound to specific atoms so they can move freely, such as in {{w|conduction band}}s of the {{w|metallic bond}}s throughout the iron ingot depicted in the comic. Randall interprets "free" in a different sense, meaning no cost. The charges free electrons carry are electric, not monetary as implied by the pun.
|}

In the title text, Randall claims to have been banned from the county fair for handing out helium-2 balloons because of the instant massive explosions caused by its radioactive decay. He jokes they violated a local ordinance. Helium balloons are often given out at county fairs and similar events, but they are filled with helium-4 and therefore inert. A balloon filled with helium-2 is a practical impossibility because of its sub-nanosecond half-life, but such an explosion would be equivalent to about 70 tons of {{w|TNT}}. In comparison, the {{w|2020 Beirut explosion}} was roughly equivalent to 500 tons of TNT.[https://link.springer.com/article/10.1007/s00193-021-00992-1] Handing out what are effectively small atomic bombs at a county fair would not go down well with any surviving local authorities, so merely being banned is a very mild punishment. Criminal charges such as mass murder and terrorism would be more likely if it weren't for the absurd impossibility of the scenario.

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

:[Title]
:Physics Cost-Saving Tips

:[A diagramatical spinning disc, at an angle]
:[It is identified with an 'I', with a dotted axial arrow labelled 'L' and a rotational movement labelled 'ω' (small omega)]
:[It sits on the left, and to the right of this is text...]
:Try replacing regular vectors with pseudovectors whenever possible

:[A square wave with three maxima (between four minima), and arrows pointing down into a collection of five sine waves of different wavelengths]
:[One of the waves having the same frequency as the square wave and the rest of them are of shorter lengths with more peaks and troughs]
:[It sits on the right, and to the left of this is text...]
:A square wave can be broken down into an infinite supply of valuable sine waves

:[Two atomic models]
:[The left containing two protons (white with a "+" sign), two neutrons (black) and orbited by two electrons (small outlines, dotted orbits/movement lines), labelled below with the text of superscript atomic weight and element symbol]
:4He
:[The right model has just the two protons and the two electrons, labelled below with the text of an atomic weight and elemental symbol, and some subtext within brackets]
:2He
:(Decays fast - use quickly)
:[Both models sit on the left of the comic, and to the right is text...]
:Cut waste by buying lighter isotopes that don't have any dead-weight neutrons

:[A flat rectangular bar, drawn in perspective with a scattering of dots/small circles on the top face and on the forward-facing one the label]
:Iron
:[An arrow points to the dots, from the text...]
:Free electrons
:[It sits to the right, and there is text to the left...]
:Conductors are a great source of free electrons
:(May carry charges)

{{comic discussion}}

[[Category:Tips]]
[[Category:Physics]]
[[Category:Chemistry]]

2645: The Best Camera

2022-07-14T16:34:58Z

172.69.33.225: /* Explanation */ better verb

{{comic
| number = 2645
| date = July 13, 2022
| title = The Best Camera
| image = the_best_camera.png
| titletext = The best camera is the one at L2.
}}

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

[https://www.goodreads.com/book/show/6921300-the-best-camera-is-the-one-that-s-with-you ''The Best Camera Is The One That's With You''] is a book by photographer {{w|Chase Jarvis}}, celebrating mobile phone cameras, not for their technical quality, but rather for the fact that people usually have them when interesting subjects appear. This advice is often given to novice photographers; sometimes phrased as, "The best camera is the one you use most." A cheap camera is better than an expensive professional camera if it is more often with the photographer, for example if it is light-weight enough to be carried on hiking trips. A fancy expensive camera that isn't available to use is of no value for taking pictures.

In this case, however, "the best camera" refers to the {{w|James Webb Space Telescope}} (JWST), the spacecraft depicted in the third panel, which cost $10 billion—[https://screenrant.com/james-webb-space-telescope-cost-how-much/ $9.5 billion over budget]—and was [[2014: JWST Delays|fifteen years late]]. It can be considered a camera because it takes pictures, and it's the best {{w|space telescope}} to date in terms of {{w|aperture}} size and thus {{w|angular resolution}}.[https://astronomy.stackexchange.com/questions/26373/relation-between-angular-resolution-and-aperture] The first pictures taken by the telescope were released on 11-12 July 2022, a few days before this comic was published.[https://www.nasa.gov/webbfirstimages] The pictures from JWST show objects as they were [https://webbtelescope.org/contents/media/images/2022/035/01G7HRYVGM1TKW556NVJ1BHPDZ as much as 13.1 billion years ago,] which is unprecedented. The telescope has [https://www.stsci.edu/jwst/instrumentation three instruments that can act as "cameras" for imaging,] a fourth {{w|optical spectrometer|spectrometer}} instrument, and many dozens of {{w|optical filter}}s. Because the telescope can only take infrared photographs invisible to the human eye, [https://jwst-docs.stsci.edu/files/97978094/97978104/1/1596073152120/NIRCam_filters_modules.png each of the filters has been assigned a standardized visible color] to convert images for viewing. However, astronomers are encouraged to use [https://www.youtube.com/watch?v=-dmiS_6YrGU&t=449s other color schemes] when observing a limited portion of the filters' range or rendering {{w|interferometry}},[https://jwst-docs.stsci.edu/jwst-near-infrared-imager-and-slitless-spectrograph/niriss-observing-modes/niriss-aperture-masking-interferometry][https://jwst-docs.stsci.edu/jwst-near-infrared-camera/nircam-observing-modes/nircam-coronagraphic-imaging][https://jwst-docs.stsci.edu/jwst-mid-infrared-instrument/miri-observing-modes/miri-coronagraphic-imaging] and to [https://www.youtube.com/watch?v=sNJR3lenz1I&t=293s convert very distant objects to their original color] from {{w|redshift}}ed infrared when possible. The capabilities of the JWST are likely to soon answer many difficult astronomical, astrophysical, and [[2643: Cosmologist Gift|cosmological]] questions that had been previously undecidable, along with important questions about the {{w|biosignature}}s of {{w|exoplanet}}s.

The title text references {{w|Lagrange Point|Lagrange Point 2}} (L2). The Lagrange Points are five locations corresponding to stationary regions of the {{w|restricted three-body problem}}, in which one of the bodies is much less massive than the other two. A low-mass body in one of those locations is remain roughly stationary relative to the other two bodies with very little fuel needed for trajectory corrections. In this case, the JWST orbits around the L2 point of the Earth-Sun system [https://space.stackexchange.com/a/57378 rather than being stationed exactly at it] to avoid shadows from the Earth and Moon that would cause harmful temperature and power variations.[https://ntrs.nasa.gov/citations/20190028885] Thus it avoids the problem the {{w|Hubble Space Telescope}} had orbiting the Earth, allowing only a short observation window per orbit—the HST could be used for only about 55 minutes of each of its 95 minute orbits for observations not sufficiently above or below its orbital plane.

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

:[Each panel features an image of space, with text printed in white at the top of each panel. The first panel says:]
:They say the best camera is the one you have with you.

:[A panel showing more stars and galaxies visible.]
:It turns out

:[A panel showing even more stars and galaxies visible. At the center of the panel is an outline drawing in white of the James Webb Space Telescope.]
:they're wrong.

{{comic discussion}}

[[Category:Astronomy]]
[[Category:Telescopes]]

2645: The Best Camera

2022-07-14T06:21:17Z

172.69.33.225: /* Explanation */ not really parenthetical

{{comic
| number = 2645
| date = July 13, 2022
| title = The Best Camera
| image = the_best_camera.png
| titletext = The best camera is the one at L2.
}}

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

''The Best Camera Is The One That's With You'' [https://www.goodreads.com/book/show/6921300-the-best-camera-is-the-one-that-s-with-you] is a book by photographer Chase Jarvis, celebrating mobile phone cameras, not for their photographic or technical quality but rather for the fact that you always have it when an interesting subject appears. This is advice often given to novice photographers, sometimes with the slight change "The best camera is the one you use most." A cheap {{w|Nikon Coolpix}} camera can be better than a professional {{w|Canon EOS}}, simply for the fact it is lightweight enough to be taken on ''every'' voyage you'll make. A fancy expensive camera that isn't at hand for you to use is of no value for taking pictures.

However, in this case "the best camera" refers to the {{w|James Webb Space Telescope}} (JWST), the spacecraft depicted in the third frame. It can be considered a camera because it takes pictures. The first pictures taken by the telescope were released on 11-12 July 2022, days before this comic was published.[https://www.nasa.gov/webbfirstimages] The pictures from JWST show objects as they were [https://webbtelescope.org/contents/media/images/2022/035/01G7HRYVGM1TKW556NVJ1BHPDZ as much as 13.1 billion years ago,] which is unprecedented. The telescope has [https://www.stsci.edu/jwst/instrumentation three instruments that can act as "cameras" for imaging,] a fourth {{w|optical spectrometer|spectrometer}}-only instrument, and 41 {{w|optical filter}}s. Because the telescope can only take infrared photographs invisible to the human eye, [https://jwst-docs.stsci.edu/files/97978094/97978104/1/1596073152120/NIRCam_filters_modules.png each of the filters has been assigned a standardized visible color] to convert images for viewing. However, astronomers are encouraged to use [https://www.youtube.com/watch?v=-dmiS_6YrGU&t=449s other color schemes] when using a subset of the filters' range or rendering {{w|interferometry}} from the [https://jwst-docs.stsci.edu/jwst-near-infrared-imager-and-slitless-spectrograph/niriss-observing-modes/niriss-aperture-masking-interferometry NIRISS Aperture Masking Interferometer] or the [https://jwst-docs.stsci.edu/jwst-mid-infrared-instrument/miri-observing-modes/miri-coronagraphic-imaging MIRI Coronagraph,] and to [https://www.youtube.com/watch?v=sNJR3lenz1I&t=293s convert very distant objects to their original color] from {{w|redshift}}ed infrared when possible.

The title text references {{w|Lagrange Point|Lagrange Point 2}} (L2). The Lagrange Points are a set of five locations which are solutions to the {{w|restricted three-body problem}}, in which one of the bodies is much less massive than the other two. A low-mass body in one of these locations is able to be stationary relative to the other two bodies with very little fuel needed for trajectory corrections. In this case, the JWST orbits around the L2 point of the Earth-Sun system [https://space.stackexchange.com/a/57378 rather than being stationed exactly at it] to avoid shadows from the Earth and Moon that would cause harmful temperature and power variations.[https://ntrs.nasa.gov/citations/20190028885] It avoids the problem the {{w|Hubble Space Telescope}} had orbiting the Earth, allowing only a short observation window per orbit. The HST could be used for about 55 minutes of every 95-minute orbit for targets not sufficiently above or below the orbital plane.

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

:[Each panel features an image of space, with text printed in white at the top of each panel. The first panel says:]
:They say the best camera is the one you have with you.

:[A panel showing more stars and galaxies visible.]
:It turns out

:[A panel showing even more stars and galaxies visible. At the center of the panel is an outline drawing in white of the James Webb Space Telescope.]
:they're wrong.

{{comic discussion}}

[[Category:Astronomy]]
[[Category:Telescopes]]

2645: The Best Camera

2022-07-14T06:18:36Z

172.69.33.225: /* Explanation */ un-redshifting

{{comic
| number = 2645
| date = July 13, 2022
| title = The Best Camera
| image = the_best_camera.png
| titletext = The best camera is the one at L2.
}}

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

''The Best Camera Is The One That's With You'' [https://www.goodreads.com/book/show/6921300-the-best-camera-is-the-one-that-s-with-you] is a book by photographer Chase Jarvis, celebrating mobile phone cameras, not for their photographic or technical quality but rather for the fact that you always have it when an interesting subject appears. This is advice often given to novice photographers, sometimes with the slight change "The best camera is the one you use most." A cheap {{w|Nikon Coolpix}} camera can be better than a professional {{w|Canon EOS}}, simply for the fact it is lightweight enough to be taken on ''every'' voyage you'll make. A fancy expensive camera that isn't at hand for you to use is of no value for taking pictures.

However, in this case "the best camera" refers to the {{w|James Webb Space Telescope}} (JWST), the spacecraft depicted in the third frame. It can be considered a camera because it takes pictures. The first pictures taken by the telescope were released on 11-12 July 2022, days before this comic was published.[https://www.nasa.gov/webbfirstimages] The pictures from JWST show objects as they were [https://webbtelescope.org/contents/media/images/2022/035/01G7HRYVGM1TKW556NVJ1BHPDZ as much as 13.1 billion years ago,] which is unprecedented. The telescope has [https://www.stsci.edu/jwst/instrumentation three instruments that can act as "cameras" for imaging,] a fourth {{w|optical spectrometer|spectrometer}}-only instrument, and 41 {{w|optical filter}}s. Because the telescope can only take infrared photographs invisible to the human eye, [https://jwst-docs.stsci.edu/files/97978094/97978104/1/1596073152120/NIRCam_filters_modules.png each of the filters has been assigned a standardized visible color] to convert images for viewing. (However, astronomers are encouraged to use [https://www.youtube.com/watch?v=-dmiS_6YrGU&t=449s other color schemes] when using a subset of the filters' range or rendering {{w|interferometry}} from the [https://jwst-docs.stsci.edu/jwst-near-infrared-imager-and-slitless-spectrograph/niriss-observing-modes/niriss-aperture-masking-interferometry NIRISS Aperture Masking Interferometer] or the [https://jwst-docs.stsci.edu/jwst-mid-infrared-instrument/miri-observing-modes/miri-coronagraphic-imaging MIRI Coronagraph,] and to [https://www.youtube.com/watch?v=sNJR3lenz1I&t=293s convert very distant objects to their original color] from {{w|redshift}}ed infrared when possible.)

The title text references {{w|Lagrange Point|Lagrange Point 2}} (L2). The Lagrange Points are a set of five locations which are solutions to the {{w|restricted three-body problem}}, in which one of the bodies is much less massive than the other two. A low-mass body in one of these locations is able to be stationary relative to the other two bodies with very little fuel needed for trajectory corrections. In this case, the JWST orbits around the L2 point of the Earth-Sun system [https://space.stackexchange.com/a/57378 rather than being stationed exactly at it] to avoid shadows from the Earth and Moon that would cause harmful temperature and power variations.[https://ntrs.nasa.gov/citations/20190028885] It avoids the problem the {{w|Hubble Space Telescope}} had orbiting the Earth, allowing only a short observation window per orbit. The HST could be used for about 55 minutes of every 95-minute orbit for targets not sufficiently above or below the orbital plane.

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

:[Each panel features an image of space, with text printed in white at the top of each panel. The first panel says:]
:They say the best camera is the one you have with you.

:[A panel showing more stars and galaxies visible.]
:It turns out

:[A panel showing even more stars and galaxies visible. At the center of the panel is an outline drawing in white of the James Webb Space Telescope.]
:they're wrong.

{{comic discussion}}

[[Category:Astronomy]]
[[Category:Telescopes]]

2645: The Best Camera

2022-07-14T04:07:32Z

172.69.33.225: /* Explanation */ caveat

{{comic
| number = 2645
| date = July 13, 2022
| title = The Best Camera
| image = the_best_camera.png
| titletext = The best camera is the one at L2.
}}

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

''The Best Camera Is The One That's With You'' [https://www.goodreads.com/book/show/6921300-the-best-camera-is-the-one-that-s-with-you] is a book by photographer Chase Jarvis, celebrating mobile phone cameras, not for their photographic or technical quality but rather for the fact that you always have it when an interesting subject appears. This is advice often given to novice photographers, sometimes with the slight change "The best camera is the one you use most." A cheap {{w|Nikon Coolpix}} camera can be better than a professional {{w|Canon EOS}}, simply for the fact it is lightweight enough to be taken on ''every'' voyage you'll make. A fancy expensive camera that isn't at hand for you to use is of no value for taking pictures.

However, in this case "the best camera" refers to the {{w|James Webb Space Telescope}} (JWST), the spacecraft depicted in the third frame. It can be considered a camera because it takes pictures. The first pictures taken by the telescope were released on 11-12 July 2022, days before this comic was published.[https://www.nasa.gov/webbfirstimages] The pictures from JWST show objects as they were [https://webbtelescope.org/contents/media/images/2022/035/01G7HRYVGM1TKW556NVJ1BHPDZ as much as 13.1 billion years ago,] which is unprecedented. The telescope has [https://www.stsci.edu/jwst/instrumentation three instruments which can act as "cameras" for imaging,] a fourth {{w|optical spectrometer|spectrometer}}-only instrument, and twelve {{w|optical filter}}s. Because the telescope can only take infrared photographs invisible to the human eye, [https://jwst-docs.stsci.edu/files/97978948/131367586/1/1633276536459/NIRISS_effective_throughputs_etcv1.6.1.png each of the filters has been assigned a standardized visible color] to convert images for viewing. (However, astronomers are free to use other color schemes when they are only using a subset of the filters' range.)

The title text references {{w|Lagrange Point|Lagrange Point 2}} (L2). The Lagrange Points are a set of five locations which are solutions to the restricted three-body problem, in which one of the three bodies is much less massive than the other two. A low-mass body in one of these locations is able to be stationary relative to the other two bodies with very little fuel needed for trajectory corrections. In this case, the JWST orbits around the L2 point of the Earth-Sun system [https://space.stackexchange.com/a/57378 rather than being stationed exactly at it] to avoid shadows from the Earth and Moon that would cause temperature variations in the instrument.[https://www.jwst.nasa.gov/content/observatory/sunshield.html] It avoids the problem the {{w|Hubble Space Telescope}} had orbiting around the Earth, allowing only a short observation window per revolution. The HST could be used for about 55 minutes of every 95-minute orbit for targets not sufficiently above or below the orbital plane.

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

:[Each panel features an image of space, with text printed in white at the top of each panel. The first panel says:]
:They say the best camera is the one you have with you.

:[A panel showing more stars and galaxies visible.]
:It turns out

:[A panel showing even more stars and galaxies visible. At the center of the panel is an outline drawing in white of the James Webb Space Telescope.]
:they're wrong.

{{comic discussion}}

[[Category:Astronomy]]
[[Category:Telescopes]]

2629: Or Whatever

2022-06-18T07:03:24Z

172.69.33.225: /* Transcript */ remove - not the focus of the comic

{{comic
| number = 2629
| date = June 6, 2022
| title = Or Whatever
| image = or_whatever.png
| titletext = Oh yeah, I didn't even know they renamed it the Willis Tower in 2009, because I know a normal amount about skyscrapers.
}}

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

The {{w|Willis Tower}} (formerly the Sears Tower) is a 108-story, 442.1 meter skyscraper in Chicago. It is currently the third tallest building in North America, and was indeed the tallest building in the world for 25 years, surpassing the {{w|World Trade Center (1973–2001)|World Trade Center}} upon opening in 1973, and being surpassed by the {{w|Petronas Towers}} upon their opening in 1998.

[[White Hat]] conveys some interesting historical trivia to [[Cueball]], regarding the {{w|Sears Tower}}. Cueball then sets the record straight by correcting White Hat's use of the word tower: In the category of 'tower', the Willis Tower was never the tallest. Cueball then realizes he just one-upped White Hat with what ''he'' knows about tall structures in general, which might make him sound obsessive, so he tags on the meaningless caveat of "or whatever".

This is meant to diffuse the tension he may have added by his well-meaning contradiction, but could also be taken as a passive-aggressive behaviour by interlocutors who may already be touchy about the original 'correction'.

In the title-text, being already self-conscious that he has overstepped the mark for polite smalltalk, he then hypercorrects the self-perceived tone of his response by explicitly denying that he knows far more about the tower, but only by providing the very facts that he is trying to claim not to know. Alternately, this could be White Hat responding to something else Cueball said, as an annoyed way to either get Cueball to stop, or to make a point that Cueball knows more than is "normal" about skyscrapers.

This comic hinges on the [https://www.engineersupply.com/What-is-the-difference-between-building-and-construction.aspx debate] about the tallest structure vs tallest ''building''. A {{w|building}} is generally defined as a human-built structure ''fit for human habitation'' when it is fit for human habitation, while a {{w|structure}} is generally defined as anything humans make. (Or in some cases, anything an animal makes, like [[2418: Metacarcinization|crab shells.]])

It is far from unusual for the tallest building (habitable) to be shorter than the tallest structure (uninhabitable), such as in 1974 when the tallest structure was the {{w|Warsaw radio mast}} at 646.38 meters. The radio mast was uninhabitable,{{Citation needed}} so the tallest building was (sort-of coincidentally) the Sears Tower at 442.1 meters. The Warsaw tower collapsed in 1991, so it was not the tallest structure for the majority of the '90s.

After the Warsaw Tower's demise, the {{w|KVLY-TV mast}}, which stood at 629 meters, held the record of tallest structure until either 2000 or 2010, with the opening of the {{w|Petronius (oil platform)|Petronius platform}} and {{w|Burj Khalifa}} respectively. (The date depends on whether you count underwater towers, as the Petronius platform is an oil rig and only 75 meters of the platform are above water). It was also the tallest Guyed mast up until 2019, when it was reduced to 605.6 meters, giving the {{w|KRDK-TV mast}} the record.

The {{w|CN tower}} stands at 553.3 meters (Measured from top of spire), which is higher than the Sears/Willis tower but shorter than the KVLT-TV mast. It is mentioned as is has some habitable space but not much, causing debate about whether it is a building (Referenced below). It was never the tallest structure, but if it's a building it would have been the tallest in the world from it's opening in 1976 until the {{w|Canton Tower}}'s in 2009. It is currently the 9th tallest building.

The debate surrounding the tallest building does not stop at building vs structure. Architects have long argued about what the height definition of a building should be. Should it include antennas sitting at the top of the building? How about spires that form part of the architectural design of the building but are not part of the habitable space? Should we focus instead on the highest habitable floor? The debate has historically had relevance every time a new record is claimed by developers eager to reach new heights using any means possible ([https://www.npr.org/2013/11/08/243714332/size-does-matter-at-least-in-the-tallest-building-debate Size Does Matter, At Least In The Tallest Building Debate]).

There is yet more debate about what counts as a building vs a structure. While some people would say that any structure with any habitable space is a building, most people in the field agree that there is a certain threshold of habitable space, below which there is not enough habitable space to count as a "building", even if there is some.

A main point in this debate are {{w|Radio masts and towers|TV towers}}, which are often tall towers with little habitable space in them, but with an observation deck at the top. Examples include the {{w|Tokyo Skytree}}, {{w|Fernsehturm Stuttgart}}, and CN tower. A similar structure is the {{w|Dubai Creek Tower}}, a tower under construction in Dubai, set to become the world's tallest structure. (The Dubai Creek Tower will not, however, broadcast tv signals).

TV towers are sometimes counted as buildings as they do have some habitable space. However, they are often not as they are commonly considered to not have enough habitable space to be buildings, hence Cueball's line "The CN tower isn't always considered a building"

{{w|List of tallest structures|Wikipedia lists}} the tallest structures, and [https://www.youtube.com/watch?v=kkMWb_8IiB4 this YouTube video] explains a bit more about tall buildings/structures. Since 2010 the Burj Khalifa has been both the tallest structure and the tallest building in the world.

==Transcript==
:[White Hat and Cueball are looking out on a skyline with six smaller skyscrapers and one much taller. The tall building has three plateaus, where it gets thinner before the top. On the top there are also two tall antennas, one twice as high as the other. Around the buldings therare 7 small clouds and two distant birds flying next tot he top of the tallest building. The two are standing on a ground behind a fence, maybe a viewing point, for looking in over the city skyline. They are looking toward the tallest bulding.]
:White Hat: You know, back in the 90s, the Sears Tower was the world's tallest tower.
:Cueball: Yeah! Or "building." The CN Tower and the KVLY-TV Antenna were taller, but the CN Tower isn't always considered a building and the antenna is supported by guy wires or whatever.

:[Caption below the panel]:
:Whenever I get self-conscious about how obsessive I sound about some random topic, I panic and tack on "or whatever."

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]
[[Category:Social interactions]]

514: Simultaneous

2022-06-02T23:08:58Z

172.69.33.225: funny

{{comic
| number = 514
| date = December 8, 2008
| title = Simultaneous
| image = simultaneous.png
| titletext = I'm leaving you for your twin. He's more mature than you by now.
}}

==Explanation==
''This comic links to {{w|Relativity_of_simultaneity|en.wikipedia.org/wiki/Relativity_of_simultaneity}}.''

[[Cueball]] and [[Megan]] are talking about the sex they just had. Cueball is remarking on how they both achieved orgasm simultaneously, but Megan disagrees.

This comic is a play on Einstein's {{w|Special relativity#Relativity of simultaneity|theory of special relativity}}. One piece of the theory deals with two observers who are moving at close to the speed of light relative to each other. According to Einstein, events that appear simultaneous to one observer will appear to happen at different times to the other.

So when one partner is moving and the other isn't, it's possible that they experience their orgasm at different times relative to each other. That would require one partner to be moving really fast in one direction, which would make them a really bad partner.{{Citation needed}} On small speeds, this effect could not be measured.

The other joke is that partners often disagree with each other — even when the difference is minor and not important to the matter.

The title text is reference to the twin paradox, which arises from another piece of special relativity. In theory, if you stick one twin on a spaceship at near light speed and keep the other back on Earth, and assuming neither accelerates, each will perceive himself to age slowly while the other ages quickly, forming an apparent paradox. Megan expresses a preference for Cueball's older twin, who will be more "mature," meaning both older and presumably less combative about simultaneity. Again, the joke here is that at relativistic speeds, there could be disagreement about which twin is truly the "older" one.

==Transcript==
:[Cueball and Megan are in bed.]
:Cueball: Mmm, simultaneous orgasms.
:Megan: That wasn't simultaneous.
:Cueball: Huh? It totally was!
:[Caption below the panel:]
:A common disagreement when one of you is doing all the moving.

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

2624: Voyager Wires

2022-05-25T23:41:53Z

172.69.33.225: /* Explanation */ ce

{{comic
| number = 2624
| date = May 25, 2022
| title = Voyager Wires
| image = voyager_wires.png
| titletext = Also, they're getting increasingly worried that someone will accidentally hit the 'retract' button, and that the end of the cable thrashing around as it winds up could devastate the Earth's surface.
}}

==Explanation==
{{incomplete|Created by a WIRE CUT BECAUSE OF BUDG- are you there houston? it's me v----ger, you'll never guess what I found! Please change this comment when editing this page. Do NOT delete this tag too soon.}}

This comic claims that the {{w|Voyager program|Voyager probe}}s communicate with NASA though ridiculously long copper wires, when in reality they use radio waves.{{citation needed}} These wires would have to be continuously lengthened as the probes travel away from Earth. Supposedly, because of "high copper prices and budget constraints," they may not be able to afford to lengthen the wires much longer. If this occurred, they would have to either cut the wires or let them break, which would prevent any further communication with the probes. As mentioned earlier, however, they actually use radio waves, not long copper wires, so this will not actually happen.

If copper wires were dragged by the Voyager probes, 550 tons of copper would be needed per hour if the cable was 1mm² thick and it would add 1 million Ohm per hour to the cable resistance.

The resulting wire would slow down the probes by drag, but be perfect space elevators for lightweight spacecraft.
Of course, since the Earth spins, the wires would also spool around the Earth, slowing the probes down even further. Clearly, this is not a good idea.{{citation needed}}

This doesn't even factor in how the Earth, in its rotation around the sun, will drag these copper wires in a circular orbit leading the wires through the sun at least once per year. The difference between the melting point of copper and the average core temperature of the sun has not yet been established by reproducible experiment, but is believed to be incompatible with the high quality required for signal transmission.

The consequence of a cable between a craft in space and a planetary location being suddenly retracted was recently demonstrated in the first episode of the Apple TV+ series ''{{w|Foundation (TV series)|Foundation}}''. It didn't end well for anyone.

A few days before this comic was released, [https://voyager.jpl.nasa.gov/news/details.php?article_id=124 NASA had reported] to have received corrupted position data from the Voyager 1 probe.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
[There is an image of a space probe, presumably one of NASA's Voyager probes, with a long wire connecting it to a ball, presumably earth. To the left, there is a second wire, which goes offscreen. Below, there is a caption.]

:[Caption below the panel]:
:Sad news: Due to high copper prices and budget constraints, NASA may finally have to cut the wires that they've been spooling out to communicate with Voyager 1 and 2.
{{comic discussion}}

[[Category:Space probes]]

2624: Voyager Wires

2022-05-25T23:41:37Z

172.69.33.225: /* Explanation */ fixes

{{comic
| number = 2624
| date = May 25, 2022
| title = Voyager Wires
| image = voyager_wires.png
| titletext = Also, they're getting increasingly worried that someone will accidentally hit the 'retract' button, and that the end of the cable thrashing around as it winds up could devastate the Earth's surface.
}}

==Explanation==
{{incomplete|Created by a WIRE CUT BECAUSE OF BUDG- are you there houston? it's me v----ger, you'll never guess what I found! Please change this comment when editing this page. Do NOT delete this tag too soon.}}

This comic claims that the {{w|Voyager program|Voyager probe}}s communicate with NASA though ridiculously long copper wires, when in reality they use radio waves.{{citation needed}} These wires would have to be continuously lengthened as the probes travel away from Earth. Supposedly, because of "high copper prices and budget constraints," they may not be able to afford to lengthen the wires much longer. If this occurred, they would have to either cut the wires or let them break, which would prevent any further communication with the probes. As mentioned earlier, however, they actually use radio waves, not long copper wires, so this will not actually happen.

If copper wires were dragged by the Voyager probes, 550 tons of copper would be needed per hour if the cable was 1mm² thick and it would add 1 million Ohm per hour to the cable resistance.

The resulting wire would slow down the probes by drag, but be perfect space elevators for lightweight spacecraft.
Of course, since the Earth spins, the wires would also spool around the Earth, slowing the probes down even further. Clearly, this is not a good idea.{{citation needed}}

This doesn't even factor in how the Earth, in its rotation around the sun, will drag these copper wires in a circular orbit leading the wires through the sun at least once per year. The difference between the melting point of copper and the average core temperature of the sun has not yet been established by reproducible experiment, but is believed to be incompatible with the high quality required for signal transmission.

The consequence of a cable between a craft in space and a planetary location being suddenly retracted was recently demonstrated in the first episode of the Apple TV series ''{{w|Foundation (TV series)|Foundation}}''. It didn't end well for anyone.

A few days before this comic was released, [https://voyager.jpl.nasa.gov/news/details.php?article_id=124 NASA had reported] to have received corrupted position data from the Voyager 1 probe.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
[There is an image of a space probe, presumably one of NASA's Voyager probes, with a long wire connecting it to a ball, presumably earth. To the left, there is a second wire, which goes offscreen. Below, there is a caption.]

:[Caption below the panel]:
:Sad news: Due to high copper prices and budget constraints, NASA may finally have to cut the wires that they've been spooling out to communicate with Voyager 1 and 2.
{{comic discussion}}

[[Category:Space probes]]

1422: My Phone is Dying

2022-05-20T21:53:30Z

172.69.33.225: Undo revision 271383 by Explain xkcd server admin (talk)

{{comic
| number = 1422
| date = September 17, 2014
| title = My Phone is Dying
| image = my_phone_is_dying.png
| titletext = When it explodes, it will cast off its outer layers, leaving behind nothing but a slowly fading PalmPilot, calculator, or two-way pager.
}}

==Explanation==
[[Beret Guy|Beret Guy's]] phone is about to "die". [[Cueball]] assumes this just means that the battery is running out and it needs to be recharged, but the phone in question appears to "die" in a way analogous to the {{w|Stellar_evolution|life and death}} of a star: expending its fuel while heating up and expanding before ultimately losing its outer layers and becoming a white dwarf or similar "lesser" star. However, this is something phones usually don't do.{{Citation needed}}

Stars constantly undergo fusion reactions. The pressure generated by these reactions counteracts gravity, preventing it from collapsing the star during its main lifespan. As the hydrogen mostly fuses into helium in the core, the core gradually becomes more dense and the region of fusion gradually moves away from the center. Then, the star grows in size, reaching the stage of a {{w|red giant}}. When most of the "fuel" for fusion has been consumed, gravity will collapse the star into a {{w|white dwarf}} while the outer layers are shed. For stars much more massive than the Sun, there will be a {{w|supernova}} explosion caused by a violent collapse, which is {{what if|73|very powerful}} (and leaves behind a {{w|neutron star}} or a {{w|black hole}}, depending on how much mass is left after the supernova). Stars with more hydrogen fuel tend to burn brighter and faster. Beret Guy's refusal of a charger is probably a reference to this.

Both a supernova explosion and the collapse of red giants into white dwarfs shed their outer layers, which is referenced in the title text. Once extra mass is added to the dying star, analogous to "charging", the process only accelerates. (Randall also explains this in {{what if|14|Short Answer Section}}.) The phone seems to have a certain mass because [[Beret Guy]] expects it to go (super)nova. Charging the phone may lead to a {{w|Nova|type 1a nova}}.

The comic also plays on the release of two new {{w|IPhone|iPhone models}} with {{w|IPhone 6|bigger}} screens, planned for 2 days after the release of the comic.

The comic could be also explained by the characteristics of Li-ion batteries, which are used in most cellphones. At the end of their useful life, these batteries may [http://barnson.org/node/1842 grow a bit]. In case of severe physical or thermal damage or multiple electrical failures, this type of battery can indeed overheat, leading to a {{w|thermal runaway}} reaction inside. That would result in the battery [http://www.dailymail.co.uk/sciencetech/article-4010386/Incredible-X-rays-lithium-ion-batteries-explode-Gas-pillows-cause-cells-swell-catch-fire.html growing and eventually exploding]. Connecting a charger to a battery failing in this manner would [http://batteryuniversity.com/learn/article/safety_concerns_with_li_ion probably make the process faster].

The title text implies that after Beret Guy's iPhone goes (super)nova, it will become either a "slowly fading" Palm Pilot, a calculator, or a two way pager: this would be the cellphone equivalent of a {{w|white dwarf}} (evidenced by the faint and slowly fading glow), {{w|neutron star}}, or {{w|black hole}} (evidence: black holes emit "information" in the form of {{w|Hawking radiation}} and have at one time been suspected to be half of a two-way portal through spacetime, along with a "{{w|white hole}}").

Additionally, some particles and atoms decay by breaking into smaller, more elementary particles. It may be humorously implied that a {{w|PalmPilot}} (an early personal data assistant and precursor to the smartphone), a {{w|calculator}} (a very simple electronic device), and {{w|two-way pager}} (a device for sending and receiving short text messages) are the more elementary components that make up an iPhone.

==Transcript==
:[Cueball stands on the left while Beret Guy walks in from the right, carrying a smartphone.]
:Beret Guy: My phone's about to die.

:[The phone is now subtly larger.]
:Cueball: Where'd you get a big iPhone? I didn't think they were out yet.
:Beret Guy: It's my regular one. It's just dying.

:[The phone increases in size again. Beret Guy now holds it in both hands.]
:Beret Guy: As it consumes its battery, it heats up and expands.
:Beret Guy: Soon it will swell to enormous size, engulfing us both.

:[The phone is now in the size of Beret Guy's torso; he is clutching it to himself. Cueball is pointing off-panel.]
:Beret Guy: Then it will collapse in a violent explosion!
:Cueball: ...do you want to borrow my charger?
:Beret Guy: That would only make it run out ''faster!''

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Beret Guy]]
[[Category:Strange powers of Beret Guy]]
[[Category:Smartphones]]
[[Category:Astronomy]]

2622: Angular Diameter Turnaround

2022-05-20T21:50:21Z

172.69.33.225: /* Transcript */ pun

{{comic
| number = 2622
| date = May 20, 2022
| title = Angular Diameter Turnaround
| image = angular_diameter_turnaround.png
| titletext = Thank you to Katie Mack for teaching me about this effect, and to Janelle Shane for describing redshifts as 'like galaxies sinking into a pool of dilute blood,' which is how I'll see them from now on.
}}

==Explanation==
{{incomplete|Created by a Galaxy-branded phone- Please change this comment when editing this page. Do NOT delete this tag too soon.}}
This comic references multiple physics and maths concepts, including {{w|Angular diameter}}, {{w|Angular diameter distance}}, {{w|Redshift}}, and {{w|phones|mobile phones}}, although mobile phones are not a core science at this time.

The comic shows the galaxies of the universe as mobile phones, pairing the age we see them at from earth, the degree they are redshifted, and how much of the sky they take up, known as their angular diameter.

Randall's intent appears to be to highlight how just a few very distant galaxies occupy incredibly large proportions of the sky, and are seen as they were at a very young age. Mobile phones have this similarity, of massive presence and early stages of technology.

The large galaxies can be seen dark red in the background, as if the unimaginably ancient child galactic bodies are looming forebodingly behind everything else.

This physical concept has a lot of juxtaposition of things that usually contradict, and Randall has put energy into attempting to highlight that.

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

{{comic discussion}}
[[Category:Astronomy]]
[[Category:Math]]
[[Category:Physics]]
[[Category:Smartphones]]
[[Category:Comics with color]]
[[Category:Comics featuring real people]] 
[[Category:Puns]]

2606: Weird Unicode Math Symbols

2022-05-09T00:29:47Z

172.69.33.225: /* Explanation */ clarify

{{comic
| number = 2606
| date = April 13, 2022
| title = Weird Unicode Math Symbols
| image = weird_unicode_math_symbols.png
| titletext = U+2A0B ⨋ Mathematicians need to calm down
}}

==Explanation==
{{incomplete|Created by A SNAKE AVOIDING A BEE ON A WHITEBOARD - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

This comic proposes joke explanations for various {{w|unicode symbols}} with obscure or no known uses.

{| class="wikitable"
|+ Symbols
|-
! Codepoint !! Symbol !! Unicode Name !! Actual use !! Randall's meaning || Explanation
|-
| U+29CD || ⧍ || Triangle with Serifs At Bottom || No known mathematics use, but resembles the {{w|National Park Service}} cartographic symbol for a campsite.[https://github.com/nationalparkservice/symbol-library/] || Shark || May look like a shark fin sticking out of the water.
|-
| U+23E7 || ⏧ || Electrical Intersection || Indicates where wires branch off || Traffic circle || Looks like a diagram of a {{w|roundabout}} as might be shown on a minimap beside a routing direction.
|-
| U+2A33 || ⨳ || {{w|Smash product}} || The quotient of the underlying spaces of two {{w|pointed space}}s, where points in the {{w|product spaces}} are identified if they contain either labeled point as an element. || Hashtag || Looks somewhat like the {{w|Number sign|hash}} symbol (#) – commonly used for indicating tags called {{w|hashtag}}s in social media – turned by 45 degrees.
|-
| U+2A7C || ⩼ || Greater-Than with Question Mark Above || Used in proofs to indicate a greater-than relation that should exist but hasn't been proven yet (non-rigorous) || Confused alligator || One metaphor used when teaching inequality signs in primary school is that the sign looks like an alligator mouth "eating" the larger number. Question marks are commonly used in cartoons to indicate confusion on the part of a character.
|-
| U+299E || ⦞ || Angle with S Inside || Plural for the angle symbol (∠) [https://www.quora.com/Unicode-How-is-the-s-in-triangle-glyph-used-in-mathematics][https://www.birdvilleschools.net/cms/lib2/TX01000797/Centricity/Domain/1114/Homework%20Helper%20Unit%203%20ch%209-10.pdf] rarely used || Snack || May look like a mouth eating an S, where the S symbolizes some snack food.
|-
| U+2A04 || ⨄ || {{w|Arity|N-ary}} Union Operator with Plus || Disjoint union[https://books.google.com/books?id=531cAgAAQBAJ&pg=PA165&lpg=PA165&dq=%E2%A8%84&source=bl&ots=oYXkMNXP-T&sig=ACfU3U2QvMRBkD7uVG0OSumKI0JQtjTIKA&hl=en&sa=X&ved=2ahUKEwios862ypL3AhWXVTABHTnQALQQ6AF6BAgKEAM] (joining a family of sets that have no elements in common) || Drink refill || Looks like a cup with a plus to indicate adding drink to the cup.
|-
| U+2B48 || ⭈ || Rightwards Arrow Above Reverse Almost Equal To || Pairs with ⭂ which could conceivably mean {{w|Assignment (computer science)|assignment}} of an {{w|Approximation|approximation}}, but neither seem to be in use. || Snakes over there || Looks like two squiggles to represent snakes and an arrow indicating the direction where they may be found.
|-
| U+225D || ≝ || Equal To By Definition || Indicates an equation where the left side is to be defined as the right side[https://www.reddit.com/r/math/comments/1z1mty/can_someone_please_explain_the_equal_to_by/] usually used in proofs to indicate a definition is being introduced|| Definitely, for sure || "Def" is a contraction of "definitely" used in slang; the equal sign looks like a double underline, indicating heavy emphasis.
|-
| U+237C || ⍼ || Right Angle with Downwards Zigzag Arrow || No purpose is known.[https://ionathan.ch/2022/04/09/angzarr.html] Speculation includes "Y axis continues downward," a diode with a gate, proof by contradiction, a proofreaders' mark to split a word, and indication of polarization direction. || Larry Potter || Looks like the letter "L" and a lightning bolt. {{w|Harry Potter (character)|Harry Potter}} is known for having a lightning bolt-shaped scar on his forehead. The character {{w|Legal_disputes_over_the_Harry_Potter_series#Nancy_Stouffer|Larry Potter}} figured in a fraudulent legal claim against J.K. Rowling.
|-
| U+2A50 || ⩐ || Closed Union with Serifs and Smash Product || Indicates that a collection of topological spaces is {{w|Union-closed sets conjecture|closed}} when taking arbitrary unions and smash products. That is, if you take the union of any collection of topological spaces in the collection (even uncountably many), or the smash product of them, the result will also be in that collection. This is apparently important because the sets can't be isomorphic (one cannot be rearranged to be exactly the other.) [https://mathoverflow.net/questions/196084/counterexample-for-associativity-of-smash-product] || Spider caught with a cup and index card || Spiders or other bugs found within someone's house or workspace may be caught with a glass and something flat, often a card or a magazine, to be released outside. The projecting lines of the smash product symbol resemble the legs of a spider. Confusingly, some fonts display this symbol with different numbers of "legs": eight, as a 45°-rotated hash symbol, or six as an asterisk.
|-
| U+2A69 || ⩩ || Triple Horizontal Bar with Triple Vertical Stroke || Emblem of the Romanian {{w|Iron Guard}} fascist political movement; possibly a four-by-four {{w|tic-tac-toe}} board.[https://pages.cs.wisc.edu/~sandlund/NumericalTicTacToe.pdf] || ℍ𝕒𝕤𝕙𝕥𝕒𝕘 || Hash symbol with one extra vertical and horizontal line, or perhaps a hash symbol which has been accidentally double-struck or overprinted.
|-
| U+2368 || ⍨ || APL Functional Symbol Tilde Diaeresis || Used for a two-argument operation to [https://aplwiki.com/wiki/Commute commute] (swap) its arguments or allow it to use a single provided argument in both argument slots, and to convert a value into a [https://aplwiki.com/wiki/Constant constant] function || :/ || Looks like a confused or disappointed face. Randall's use is in fact common among {{w|APL (programming language)|APL}} programmers in the comments, as documented [https://aplwiki.com/wiki/APL_Orchard#Emoticons here] and [https://aplwiki.com/wiki/Humour#Glyph_puns here].
|-
| U+2118 || ℘ || Script Capital [''sic''] P || A stylized {{w|round hand}} 'p' used by Weierstrass for his "{{w|Weierstrass elliptic function|p-function}}," with features of both capital 𝒫  and small 𝓅. Sometimes also used as the {{w|power set}} operator.
|| Snake || This symbol coils around like a long snake, with a tapering-off tail on one end and a small "head" on the other.
|-
| U+2AC1 || ⫁ || Subset with Multiplication Sign Below || Indicates that one set is subset of another by means of the cross product || <div style="writing-mode: vertical-rl; text-align: center;">User experience</div> || Looks like the letters "Ux" sideways; UX is a common abbreviation for {{w|user experience}}.
|-
| U+232D || ⌭ || {{w|Cylindricity}} || A symbol used in geometric dimensioning and tolerancing (GD&T) to represent a parameter called "cylindricity" which describes the statistical deviation of an ensemble of surfaces from a reference cylinder. [https://cimquest-inc.com/metrology-minute-cylindricity/ example use] || Rolling dough between your hands to shape it into a ball || Looks like two flat hands (perhaps like stick-figure arms) rolling a ball between them. Rolling dough between one's hands to make it into a ball is an important step in making many kinds of pastry and bread.
|-
| U+2A13 || ⨓ || Line Integration with Semicircular Path Around Pole || Very rare symbol for half of a closed {{w|Contour integration|contour}} or {{w|Line integral|line}} integral which contains the {{w|Origin (mathematics)|origin}} in its interior. Contour integrals which circle the origin are very important in complex analysis. If such an integral were split into two parts, each could be represented by this symbol (which can be mistaken for ⨔, the integral not including the {{w|Zeros and poles|pole}}, with a wider and more complete arc around an offset dot.) [https://math.stackexchange.com/questions/2299363/where-is-the-%E2%A8%93-integral-symbol-defined]
|| Integral that avoids a bee on the whiteboard || Looks like an {{w|integral}} symbol with a bump that goes around a dot, as if a professor was drawing an integral on a whiteboard but did not want to disturb a bee that had landed right in the path of their marker.
|-
| U+2A0B (title text)|| ⨋ || Summation with Integral || The sum of the sum of the discrete elements (∑) and the integrals (∫) over the connected pieces. This symbol requires context to be meaningful but could occur, for instance, when computing probabilities using mixed distributions.
[https://twitter.com/fermatslibrary/status/1308743505309822977 see also]
|| Mathematicians need to calm down || Each of the two symbols is specifically used to represent a kind of summation that is calculated completely differently from the other. Combining them could produce frustration for people unfamiliar with the usage. The comment given may make fun of mathematicians' tendency to form increasingly complex expressions in their work. It may as well be a pun on the pronounciation of the letter {{w|Esh_(letter)|Esh}} (Shhhh).
|-
|}

This comic may have been inspired by [https://ionathan.ch/2022/04/09/angzarr.html this blog post], which went viral (in a limited sense) the same day the comic was published.

==Transcript==
<big>Weird Unicode Math Symbols</big>
And their meanings

{|
| U+29CD || ⧍ || Shark
|-
| U+23E7 || ⏧ || Traffic circle
|-
| U+2A33 || ⨳ || [The word "hashtag" with the letters slanted counterclockwise]
|-
| U+299E || ⦞ || Snack
|-
| U+2A04 || ⨄ || Drink refill
|-
| U+2B48 || ⭈ || Snakes over there
|-
| U+225D || ≝ || Definitely, for sure
|-
| U+237C || ⍼ || Larry Potter
|-
| U+2A50 || ⩐ || Spider caught with a cup and index card
|-
| U+2A69 || ⩩ || [The word "hashtag" but with extra horizontal and vertical lines]
|-
| U+2368 || ⍨ || :/
|-
| U+2118 || ℘ || Snake
|-
| U+2AC1 || ⫁ || [The words "user experience" rotated clockwise 90 degrees]
|-
| U+232D || ⌭ || Rolling dough between your hands to shape it into a ball
|-
| U+2A13 || ⨓ || Integral that avoids a bee on the whiteboard
|}

{{comic discussion}}
[[Category:Unicode]]
[[Category:Math]]
[[Category:Harry Potter]]

2017: Stargazing 2

2022-05-04T18:14:41Z

172.69.33.225: Undo revision 241052 by Ex Kay Cee Dee (talk)

<noinclude>:''"2017", this comic's number, redirects here. For the comic named "2017", see [[1779: 2017]].''</noinclude>
{{comic
| number = 2017
| date = July 9, 2018
| title = Stargazing 2
| image = stargazing_2.png
| titletext = I mean, it wasn't exactly MY thesis. When the FAA came to shut down our observatory for using the telescope mirror to shine light at airplanes, I took a thesis and a bunch of doctorates from the supply cabinet on my way out.
}}

==Explanation==
This is the second comic in the [[:Category:Stargazing|Stargazing]] series: The first was [[1644: Stargazing]], two and a half years earlier. It was followed by [[2274: Stargazing 3]] one and a half years later.

This comic continues with [[Megan]] as a TV host mixing accurate astronomical information with trivialities, as well as utterly bizarre statements. (See this [[1644: Stargazing#Relevant TV-shows|section]] from the original Stargazing comic about the host and also the [[1644: Stargazing#Trivia|trivia]], from the original comic, regarding the gender of the host).

In the first panel, the host voices surprise that the stars are visible again after disappearing during daylight.

The host mentions three stars in a constellation which she says is called The Triangle, likely referring to the constellation {{w|Triangulum}}, which is in fact just three main stars in a narrow triangle. However, this may also simply be intended to show the host's lack of knowledge of constellations, since she then goes on to point out three other stars forming a triangle and concludes that one can form lots of triangles by connecting groups of three stars. In Euclidean and non-Euclidean geometry, any set of three non-collinear points will form a triangle, so to say that there are a "lotta triangles" is both trivial and an understatement.{{Citation needed}} (There are about 125 billion triangles visible in the night sky with around 9096 visible stars.)

Then she points to planets, calling them dots known as "fool's stars" (like fool's gold). Planets such as Venus and Jupiter are often mistaken as stars, and the word itself is derived from the Greek, ''planētēs'' or "wanderer." She also notes that lacking interstellar transportation, humanity will likely only reach the planets within our solar system. However, she then makes the seemingly ludicrous assertion that humans will turn these planets into interplanetary landfills, which might be a comment on how humans have used the Earth.

The host also notices a dot of "space trash": An artificial satellite. Since the nascent Space Age, the Earth's orbit has gradually accumulated artificial materials that include satellites, spent rockets, and space stations. There are concerns such debris accumulation will increasingly imperil current and future space projects. However, the host claims there is an app that can tell you "whose fault it is," presumably a satellite-tracking smartphone app such as [http://itunes.apple.com/us/app/skyview-satellite-guide-find/id694309958?mt=8 SkyView] which can inform you who launched a given satellite and thus whose "fault" that particular bit of space-junk might be.

The host eventually goes off on a tangent when someone from the audience points out something blinking in the sky. The host says it is a plane, and tells them what is inside it. The host continues, "don't bother trying to catch that one." This could be understood as she means it's too hard to point the telescope at it properly because it is moving too fast. In the title text, however, she means this literally, revealing that at one point during her studies she apparently used the reflective mirror of a telescope to shine light directly at airplanes, which caused the {{w|Federal Aviation Administration}} (FAA) to close down the observatory. She claims it was worth getting shut down by the FAA because she completed her thesis for her graduate degree. "Got a thesis out of it" is a phrase typically used by a scholar after discussing a research project, as a way of indicating that it was actually the main research they had conducted as a student in graduate school. Conducting research and writing it up in a thesis is one of the major hurdles toward earning a graduate degree (masters or doctorate).

In the title text, she clarifies that as she was exiting the observatory, she literally "got", as in "stole", someone else's thesis paper and multiple doctorates (presumably framed degrees), either to fraudulently claim them as her own accomplishments, or perhaps just because she wanted to steal stuff. Usually "got a thesis" is shorthand for the process of "writing a lengthy thesis paper and having it be accepted as a requirement for graduation", however in this case she simply swiped someone else's document. The revelations that she's extremely unqualified (and unethical) would explain her many bizarre statements.

==Transcript==
:[In a dark panel, Megan is a TV host standing in front of a group of 5 people: two Cueballs, Ponytail, Hairbun and a Megan-like woman.]
:Host: Welcome back to stargazing.
:Host: When the stars disappeared this morning, I figured I had to find a new job, but they're ''back!'' This ''rules!''

:[A frame-less white panel in which the host points to the upper right with the Megan-like woman, Ponytail and Cueball looking in that direction.]
:Host: Those three stars form a constellation called the triangle.
:Host: Those three are another triangle.
:Host: Lotta triangles. Very important shape.

:[Back to a dark panel with the host now pointing to the upper left in a close-up.]
:Host: Those dots are planets, or "fool's stars." Without interstellar travel, they're the only ones we can realistically hope to dump trash on.
:Host: Speaking of space trash, that dot is a satellite. There are apps that will tell you whose fault it is.

:[The host is now turned right not pointing, still in a close-up.]
:Off-panel voice: What's that blinking one?
:Host: Airplane. They're full of snacks and money and stuff, but don't bother trying to catch them- they're ''way'' too high up.
:Host: Learned that the hard way in grad school.
:Host: Got a thesis out of it, at least.

{{comic discussion}}

[[Category:Stargazing]]
[[Category:Comics sharing name|Stargazing]]
[[Category:Comics with inverted brightness]]
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Hairbun]]
[[Category:Comics featuring Ponytail]]
[[Category:Multiple Cueballs]]
[[Category:Astronomy]]
[[Category:Research Papers]]

2613: Bad Map Projection: Madagascator

2022-05-03T03:32:39Z

172.69.33.225: item frame

{{redirect|Frame}}
{{ItemEntity
|image=Item Frame.png;Item Frame (map).png
|image2=Glow Item Frame.png;Glow Item Frame (map).png
|invimage=Item Frame
|invimage2=Glow Item Frame
|renewable=Yes
|stackable=Yes (64)
|drops={{ItemLink|Item Frame}} (1) 
or
{{ItemLink|Glow Item Frame}} (1) {{EnvSprite|items}} The item it contains.
}}

An '''item frame''' is an [[entity]]{{only|java|short=y}} or [[block entity]]{{only|bedrock|short=y}} that displays the item or block that is inside it.

A '''glow item frame''' keeps itself and the item inside it illuminated, even in the dark.

== Obtaining ==

=== Breaking ===

{{IN|je}}, an empty item frame can be broken simply by punching it. If the item frame contains an item, punching it drops the item, leaving the frame on the wall.

Because item frames are [[entities]] {{in|java}}, they can be broken in [[Adventure]] mode. They will also be targeted by commands using the @e selector.{{only|java}}

=== Natural generation ===

An item frame containing a pair of [[elytra]] generates in each [[end ship]].
[[File:BoatElytra.png|thumb|An item frame naturally generating in an end ship.]]

=== Crafting ===
{{Crafting
|head=1
|A1= Stick |B1= Stick |C1= Stick
|A2= Stick |B2= Leather |C2= Stick
|A3= Stick |B3= Stick |C3= Stick
|Output= Item Frame
|type= Decoration block
}}
{{Crafting
|foot=1
|Glow Ink Sac
|Item Frame
|Output= Glow Item Frame
|type= Decoration block
}}

=== Trading ===
Expert-level [[Trading#Cartographer|cartographer]] villagers have a chance to sell an item frame for 7 emeralds.

== Usage ==

=== Item display ===

[[File:Item Frame (map filled partial).png|thumb|150px|Item frame with partially filled map]]
Item frames can be placed on the sides of [[cactus]] blocks, [[pressure plate]]s, [[fence]]s, [[tree]]s, [[slab]]s, [[cobblestone wall]]s, [[chest]]s, [[door]]s, and all [[solid block]]s. They can also be placed on the top and bottom of these blocks. To place on chests and doors, the player needs to be [[sneaking]]. As item frames are an entity, multiple item frames can occupy the same block, although on different faces. It also allows non-solid blocks to occupy the same space.{{only|java}}

Players can place items in the frame by {{control|using}} the item. If a [[map]] is placed in an item frame, it enlarges to show the map in the size of a full block, with the item frame's location displayed as a green pointer on the map, pointing in the direction the item frame is facing. If this is done in the Nether, the green cursor spins around similar to the white cursor (players). If an item in an item frame has been renamed using an [[anvil]], it displays its custom name when the cursor is over the item frame. If the player places a block inside the frame, it is displayed in miniature half in, half out of the block. This can be most notably seen on stairs or slabs.

{{control|Pick block}} may be used on item frames by players in creative mode only, the control has no effect for players in survival or adventure mode. When the item frame is displaying an item, {{control|pick block}} picks the displayed item instead of the item frame.

Item frames can be placed on the lid of a [[shulker box]] that is positioned horizontally, but pop off when the lid is opened.{{only|java}}

=== Rotation ===
{{FakeImage|{{animate|Item Frame with Item.png;Item Frame with rotated Item.png;Item Frame with Block.png;Item Frame with rotated Block.png|150px}}|align=right}}

The displayed item can then be rotated by right-clicking the frame. Items displayed in the item frame can turn 45° diagonally, with a total of 8 possibilities (90° and 4 possibilities if it is a map), and the frame outputs a [[Mechanics/Redstone/Circuit#Power level|redstone signal]] depending on the rotation phase that can be interpreted by a [[redstone comparator]] (note that this rotation value is separate from the clock or compass rotation). As long as the frame remains placed, it remembers the orientation of the last item it held, and uses it for the next item it holds.{{only|java}}

=== Glow Item Frames ===
[[File:Item Frames Comparison.png|thumb|260px|Comparison between ordinary item frame and glow item frame in the dark.]]

When an item is placed inside a glow item frame, it appears to glow, even though it does not emit any [[light]].

== Sounds ==
Glowing item frames currently do not have different sounds.
{{Sound table
|sound=Item Frame add item1.ogg
|sound2=Item Frame add item2.ogg
|soumd3=Item Frame add item3.ogg
|sound4=Item Frame add item4.ogg
|subtitle=Item Frame fills
|id=entity.item_frame.add_item
|translationkey=subtitles.entity.itemframe.add_item
|distance=16}}
{{Sound table
|sound=Item Frame break1.ogg
|sound2=Item Frame break2.ogg
|sound3=Item Frame break3.ogg
|subtitle=Item Frame breaks<ref>{{bug|MC-194948}}</ref>
|id=entity.item_frame.break
|translationkey=subtitles.entity.itemframe.break
|distance=16}}
{{Sound table
|sound=Item Frame place1.ogg
|sound2=Item Frame place2.ogg
|sound3=Item Frame place3.ogg
|sound4=Item Frame place4.ogg
|subtitle=Item Frame placed
|id=entity.item_frame.place
|translationkey=subtitles.entity.itemframe.place
|distance=16}}
{{Sound table
|sound=Item Frame remove item1.ogg
|sound2=Item Frame remove item2.ogg
|sound3=Item Frame remove item3.ogg
|sound4=Item Frame remove item4.ogg
|subtitle=Item Frame empties
|id=entity.item_frame.remove_item
|translationkey=subtitles.entity.itemframe.remove_item
|distance=16}}
{{Sound table
|sound=Item Frame rotate item1.ogg
|sound2=Item Frame rotate item2.ogg
|sound3=Item Frame rotate item3.ogg
|sound4=Item Frame rotate item4.ogg
|subtitle=Item Frame clicks
|id=entity.item_frame.rotate_item
|translationkey=subtitles.entity.itemframe.rotate_item
|distance=16
|foot=1}}

== Achievements ==
{{load achievements|Map room}}

== Data values ==
=== ID ===
{{edition|java}}:
{{ID table
|edition=java
|firstcolumnname=Item
|showforms=y
|generatetranslationkeys=y
|displayname=Item Frame
|spritetype=item
|nameid=item_frame
|form=item}}
{{ID table
|displayname=Glow Item Frame
|spritetype=item
|nameid=glow_item_frame
|form=item
|foot=1}}
{{ID table
|edition=java
|firstcolumnname=Entity
|generatetranslationkeys=y
|displayname=Item Frame
|spritetype=entity
|nameid=item_frame}}
{{ID table
|displayname=Glow Item Frame
|spritetype=entity
|nameid=glow_item_frame
|foot=1}}

{{edition|bedrock}}:
{{ID table
|edition=bedrock
|firstcolumnname=Item Frame
|shownumericids=y
|showforms=y
|generatetranslationkeys=y
|displayname=Item
|spritename=item-frame
|spritetype=item
|nameid=frame
|id=513
|form=item}}
{{ID table
|displayname=Block
|spritename=item-frame
|spritetype=block
|nameid=frame
|id=199
|form=block
|translationkey=-
|itemform=item.frame}}
{{ID table
|displayname=Item
|spritename=glow-item-frame
|spritetype=item
|nameid=glow_frame
|id=623
|form=item}}
{{ID table
|displayname=Block
|spritename=glow-item-frame
|spritetype=block
|nameid=glow_frame
|form=block
|id=594
|itemform=item.glow_frame
|translationkey=-
|foot=1}}

=== Block states===
{{see also|Block states}}

{{/BS}} 
===Item data===
{{el|java}}:{{main|Player.dat format}}<div class="treeview">
*{{nbt|compound|tag}}''' tag''': The item's '''tag''' tag.
{{:Player.dat_format/Entity Spawners}}Unlike spawn eggs, cannot change the type of entity created using the <code>id</code> tag. Data that item frames do not normally use (see below) has no effect.
</div>
===Entity data===
{{main|Entity format}}

{{IN|java}}, item frames have entity data that define various properties of the entity.

{{/ED}}

===Block data===

{{IN|bedrock}}, an item frame has a block entity associated with it that holds additional data about the block.

See [[Bedrock Edition level format/Block entity format]].

== Video==

<div style="text-align:center">{{yt|rJLj95DBb-w}}</div>

==History==
{{History|java}}
{{History||August 15, 2012|link={{tweet|Dinnerbone|235724805196877824}}|[[File:Item Frame (pre-release).png|32px]] [[Dinnerbone]] showed the first image of item frames.}}
{{History||August 15, 2012|link={{tweet|Dinnerbone|235742974271700993}}|[[File:Item Frame (item) (pre-release).png|32px]] Dinnerbone showed item frame in item form.}}
{{History||August 15, 2012|link={{tweet|jeb_|235746335368814592}}|[[File:Item Frame (pre-release 2).png|32px]] [[Jeb]] showed the item frames with new model.}}
{{History||August 16, 2012|link={{tweet|Dinnerbone|236062188555624448}}|[[File:Item Frame (item) JE1 BE1.png|32px]] Dinnerbone showed the item frame in item form with new texture.}}
{{History||1.4.2|snap=12w34a|[[File:Item Frame JE1 BE1.png|32px]] [[File:Item Frame (item) JE1 BE1.png|32px]] Added item frames.
|There is currently a bug where attempting to place an item frame in [[multiplayer]] causes an internal server error, as well as other bugs.}}
{{History|||snap=12w34b|The multiplayer item frame bug has been fixed.}}
{{History|||snap=12w38a|Item frames no longer despawn when the [[player]] moves 20 [[block]]s away.}}
{{History||1.7.2|snap=13w36a|Items renamed using an [[anvil]] now display their name when looked at up close.}}
{{History|||snap=13w41a|[[Map]]s placed in an item frame now cover the whole block face, allowing seamless tiling of adjacent maps. This makes undiscovered areas of maps invisible.}}
{{History|||snap=13w43a|[[File:Item Frame (map) JE1 BE1.png|32px]] Incomplete maps placed in item frames now display the item frame texture underneath.}}
{{History||1.8|snap=14w04a|[[Item]]s and [[block]]s displayed in the item frame now rotate 45 degrees when rotated instead of 90 degrees, and a [[redstone comparator|comparator]] outputs a [[redstone]] signal depending on the rotation phase.}}
{{History|||snap=14w10a|Multiple item frames can no longer be placed on the same block face.}}
{{History||1.9|snap=15w41a|An item frame now generates in the treasure room of [[end ship]]s, above the [[shulker]] that guards the treasure. It holds [[elytra]].}}
{{History|||snap=15w49a|Item frames are no longer destroyed by [[lightning]] bolts.}}
{{History|||snap=15w50a|Added [[sound]]s to item frames: <code>entity.itemframe.add_item</code>, <code>entity.itemframe.break</code>, <code>entity.itemframe.place</code>, <code>entity.itemframe.remove_item</code>, and <code>entity.itemframe.rotate_item</code>.}}
{{History||1.11|snap=16w32a|The [[entity]] ID of item frames has been changed from <code>ItemFrame</code> to <code>item_frame</code>.}}
{{History||1.13|snap=17w47a|Prior to [[1.13/Flattening|''The Flattening'']], this [[item]]'s numeral ID was 389.}}
{{History|||snap=17w50a|Item frames can now be put on floors and ceilings.}}
{{History||1.14|snap=18w43a|[[File:Item Frame JE2 BE2.png|32px]] [[File:Item Frame (map) JE2 BE2.png|32px]] [[File:Item Frame (item) JE2 BE2.png|32px]] The textures of item frames have been changed.}}
{{History|||snap=19w11a|Item frames are now [[trading|sold]] by cartographer [[villager]]s.}}
{{History||1.15|snap=19w38a|[[File:Item Frame 19w38a.png|32px]] [[File:Item Frame Map 19w38a.png|32px]] Item frames now appear dark, same as suffocating [[mob]]s.<ref>{{bug|mc-161283}}</ref>}}
{{History|||snap=19w39a|Item frames are now colored correctly.}}
{{History||1.16|snap=20w10a|The NBT <code>Invisible</code> and <code>Fixed</code> have been added to item frames.}}
{{History||1.17|snap=21w03a|[[File:Glow Item Frame JE1 BE3.png|32px]] [[File:Glow Item Frame (map) JE1 BE3.png|32px]] [[File:Glow Item Frame (item) JE1 BE1.png|32px]] Added glow item frames.}}
{{History|||snap=21w10a|Added new [[subtitles]] for Glow Item Frames.}}
{{History||1.18|snap=21w41a|[[File:Item Frame (item) JE3.png|32px]] [[File:Glow Item Frame (item) JE2.png|32px]] The textures of item frames and glow item frames as item have been changed.}}

{{History|pocket alpha}}
{{History||v0.14.0|snap=build 1|[[File:Item Frame JE1 BE1.png|32px]] [[File:Item Frame (map) JE1 BE1.png|32px]] [[File:Item Frame (item) JE1 BE1.png|32px]] Added item frames.
|Item frames are considered as a [[block entity]] instead of an [[entity]].<ref>{{tweet|_tomcc|690127591525728257|Let's create some drama: ItemFrames in MCPE will behave like signs and won't be placeable in blocks, and can't put many in the same block.|21 Jan 2016}}</ref>}}
{{History|pocket}}
{{History||1.0.0|snap=alpha 0.17.0.1|Item frames now generate in [[end city]] ships.}}
{{History|bedrock}}
{{History||1.10.0|snap=beta 1.10.0.3|[[File:Item Frame JE2 BE2.png|32px]] [[File:Item Frame (map) JE2 BE2.png|32px]] [[File:Item Frame (item) JE2 BE2.png|32px]] The textures of item frames have been changed.}}
{{History||1.11.0|snap=beta 1.11.0.4|Item frames can now be [[trading|bought]] from cartographer [[villager]]s.}}
{{History||1.13.0|snap=beta 1.13.0.9|Item frames can now be placed on the top and bottom of [[block]]s.}}
{{History||1.16.0|snap=beta 1.16.0.57|Trading has been changed, item frames are now offered by expert-level cartographer villager.}}
{{History||Caves & Cliffs (experimental)|link=Bedrock Edition 1.17.0|snap=beta 1.16.210.59|[[File:Item Frame.png|32px]] [[File:Item Frame (map) JE2 BE2.png|32px]] [[File:Glow Item Frame (item) JE1 BE1.png|32px]] Added glow item frames.
|Has the default item frame block texture.}}
{{History|||snap=beta 1.16.210.60|Temporarily removed glow item frames due to a crash.}}
{{History|||snap=beta 1.16.220.50|[[File:Item Frame JE2 BE2.png|32px]] [[File:Item Frame (map) JE2 BE2.png|32px]] [[File:Glow Item Frame (item) JE1 BE1.png|32px]] Re-added glow item frames.}}
{{History|||snap=beta 1.16.220.52|[[File:Glow Item Frame BE2.png|32px]] [[File:Glow Item Frame (map) BE2.png|32px]] Glow Item Frame block texture uses update block texture due to a bug.}}
{{History||1.17.0|snap=beta 1.16.230.52|[[File:Item Frame.png|32px]] [[File:Item Frame (map) JE2 BE2.png|32px]] The glow item frame block textures have been reverted back to the previous one.}}
{{History|||snap=beta 1.17.0.50|[[File:Glow Item Frame JE1 BE3.png|32px]] [[File:Glow Item Frame (map) JE1 BE3.png|32px]] The textures of glow item frames have been changed to match Java Edition.
|Now produces [[redstone]] signals.}}
{{History|||snap=beta 1.17.0.52|Maps now glow in glow item frames.
|Glow Item Frames are no longer available only through [[Experimental Gameplay]].}}
{{History||1.18.10|snap=beta 1.18.10.20|[[File:Item Frame (item) JE3.png|32px]] [[File:Glow Item Frame (item) JE2.png|32px]] The textures of item frames and glow item frames as item have been changed.}}

{{History|console}}
{{History||xbox=TU9|xbone=CU1|ps=1.0|wiiu=Patch 1|switch=1.0.1|[[File:Item Frame JE1 BE1.png|32px]] [[File:Item Frame (map) JE1 BE1.png|32px]] [[File:Item Frame (item) JE1 BE1.png|32px]] Added item frames.}}
{{History||xbox=TU11|The limit for item frames in a world has been increased. A message is now displayed when the maximum number of item frames are reached.}}
{{History||xbox=TU31|xbone=CU19|ps=1.22|wiiu=Patch 3|[[Item]]s and [[block]]s displayed in the item frame now rotate 45 degrees when rotated instead of 90 degrees, and a [[redstone comparator|comparator]] now outputs a [[redstone]] signal depending on the rotation phase.}}
{{History||xbox=TU43|xbone=CU33|ps=1.36|wiiu=Patch 13|Added [[sound]]s for item frames.}}
{{History||xbox=TU56|xbone=CU47|ps=1.55|wiiu=Patch 26|switch=1.0.6|If the [[item]] in the item frame has a name (from an [[anvil]]) it now shows as if there is a name tag on the item frame.}}
{{History||xbox=none|xbone=none|ps=1.90|wiiu=none|switch=none|[[File:Item Frame JE2 BE2.png|32px]] [[File:Item Frame (map) JE2 BE2.png|32px]] [[File:Item Frame (item) JE2 BE2.png|32px]] The textures of item frames have been changed.}}

{{History|new 3ds}}
{{History||0.1.0|[[File:Item Frame JE1 BE1.png|32px]] [[File:Item Frame (map) JE1 BE1.png|32px]] [[File:Item Frame (item) JE1 BE1.png|32px]] Added item frames.}}
{{History|foot}}

==Gallery==
<gallery>
File:Suggestion for itemframes.png|Original Reddit image suggesting item frames and flower pots.
File:Item frame2.png|Dinnerbone's first screenshot showing armor and weapons.
File:Item frame3.png|Dinnerbone's second screenshot showing a map, a compass, and two diamond swords.
File:Item frame4.png|Dinnerbone's third screenshot showing a golden sword in all directions, the item frame item itself, and a working clock.
File:Item frame1.png|Jeb's screenshot of the item frame.
File:FlowerPot.png|Snapshot showing plant pots and item frames.
File:Item frame5.png|Snapshot image of an ender pearl in an item frame.
File:Frame fireplace.png|An image of a fireplace retweeted by Dinnerbone.
File:SOATPC.png|An image tweeted by Dinnerbone showing how hovering over an item frame containing a renamed item shows a name tag.
</gallery>

== Issues ==

{{issue list}}

==Trivia ==

*The item frame is based upon a suggestion on [[wikipedia:Reddit|Reddit]], like the [[ender chest]] and [[flower pot]].<ref>{{Tweet|dinnerbone|235747041286975488}}</ref>
*The item frame is the only entity to reference a block [[model]].{{only|java|short=1}} Because of this, the texture of the frame border is the same as the birch planks texture.
*Item frame is the '''only''' placeable item that can interfere with other non-full block entities.

== Gallery==

<gallery>
File:Slab Frame.png|An item frame on the side of a slab.
File:ItemFrameBoxed.png|Four item frames in a one-block space.{{only|java}}
File:Item Frames Woodbase.png|The frame itself uses the texture of birch planks.
File:Item Frame rotation.gif|The rotation of an item in an item frame.
File:Front-back-itemframe.png|The front and back of an item frame are the same.
</gallery>

==See also==

2613: Bad Map Projection: Madagascator

2022-04-29T22:58:36Z

172.69.33.225: i love among us

{{comic
| number = 2613
| date = April 29, 2022
| title = Bad Map Projection: Madagascator
| image = bad_map_projection_madagascator.png
| titletext = The projection's north pole is in a small lake on the island of Mahé in the Seychelles, which is off the top of the map and larger than the rest of the Earth's land area combined.
}}

==Explanation==
{{incomplete|Created by MADAGASCAR (2005) - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

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⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡼⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⡾⠛⠉⠁⠀⠈⢿⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡾⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢳⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣴⠃⠀⠀⠀⠀⠀⠀⠘⣿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣽⠟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠁⠀⣀⣀⣀⣠⣤⣤⣤⣤⣤⣤⣤⣄⣀⠀⠀⠀⠀⠀⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠃⠀⠀⠀⠀⠀⠀⠀⠀⢻⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⠚⠛⠛⠋⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠛⠶⢤⣄⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⡾⠃⠀⠀⠀⠀⠀⠀⠀⠀⣠⣶⣶⣶⡞⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠳⣤⠀⢀⣀⡀⠀⠀⠀⠀⠀⣠⡴⠖⠚⠛⠛⠛⠛⠛⠛⢻⣿⣿⣯⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⠁⠀⠀⠀⠀⠀⠀⠀⣠⣿⡿⠃⠀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡟⠉⠉⠙⠛⠛⠳⠶⡞⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣿⢿⣿⣿⣿⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠁⠀⠀⠀⠀⠀⠀⢀⣼⣿⠟⠁⠀⠀⠘⣧⠀⠀⠀⠀⠀⣀⣠⣤⡴⠶⠶⠶⢤⣤⣀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠁⠀⠀⠀⠸⢦⣄⠀⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣿⣿⣿⣿⣿⣿⣟⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠁⠀⠀⠀⠀⠀⠀⣠⣾⡟⠁⠀⠀⠀⠀⠀⢸⡆⠀⠀⣼⠋⠉⣠⣤⣶⣶⣦⡀⠀⠀⠉⠙⢳⡆⠀⠀⠀⠀⢠⡟⣸⡇⠀⠀⠀⠀⠈⠛⢿⣆⣠⣤⣤⣶⣒⡒⠒⠒⠲⣄⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀⠀⠀⠀⢠⣼⠟⠋⠀⠀⠀⠀⠀⠀⠀⠀⢳⣄⠀⣏⣀⣸⣿⣿⣿⣿⣿⣇⣀⣤⣤⠶⠟⠁⠀⠀⠀⢠⡞⠰⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢷⣾⣿⣿⣷⡄⠀⠀⣿⠀⠀⠘⣷⣿⣿⣿⣿⣯⣿⣿⡿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⠀⠀⠀⠀⠀⢰⡿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⠻⠿⠿⢿⣭⣭⣭⣭⣉⣉⣁⣀⣀⣀⣀⣀⣀⣀⣴⠛⠁⠀⣀⣤⣄⠀⠀⠀⠀⠀⠀⠀⠀⢸⠀⠀⠉⠛⠳⠶⠶⠟⠀⠀⠀⢻⣿⣿⣿⣿⣿⣿⡿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣽⡇⠀⠀⠀⠀⣴⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠉⠉⠉⠉⠉⢩⡭⠥⠶⠶⠞⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢷⣤⣤⣤⣤⣄⣀⠀⠀⠀⠀⠈⣿⣿⣿⣿⣿⣿⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠃⠀⠀⢀⡾⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣇⠀⠀⠀⠀⠀⢀⣀⣤⣤⣄⠀⠀⠀⠀⠀⠀⠀⠀⠉⠻⣦⡀⠈⠉⠉⠉⠉⠙⢿⣿⣿⣿⣯⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⣰⠟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⠀⠀⠀⠀⣴⣿⣿⣿⣿⡿⠀⠀⠀⠀⣠⣶⣶⣤⣄⠀⠈⢳⣄⠀⠀⠀⠀⠀⠀⠹⣿⣿⣿⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⢀⣴⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⣇⠀⠀⠀⢸⣿⣿⣿⡿⠋⠀⠀⠀⠀⠀⠻⣿⣿⣿⡿⠀⣠⠶⠋⠀⠀⠀⠀⠀⠀⠀⠈⢿⡿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⡞⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠦⣤⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣰⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡗⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠒⠶⠶⠚⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⣷⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⣀⣤⣤⣤⣤⣤⣤⣤⣄⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣠⠴⠞⢿⡉⠉⢹⡆⠀⠀⠀⣿⠀⠀⠀⣿⠙⢦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠶⢿⡅⠀⠀⠘⡇⢀⣠⣷⣤⣤⣤⣿⣀⡀⢸⡇⠀⣼⠿⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⡾⣏⠀⠈⢷⣄⣠⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡻⢿⣇⣠⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣷⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡴⠏⠀⢙⣦⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠷⠶⢻⡄⣸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⣧⠀⠀⠀⠀⠀⠀⠀⢤⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⠀⠀⠀⠀⠀⣼⢳⣤⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣇⣀⣠⣼⠟⢻⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⣿⠀⠀⠀⢠⣤⣼⠶⠛⠀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⠏⠀⠀⠀⠀⢰⡇⣸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⣤⣤⣶⣾⣶⣾⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⣯⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⢿⣿⣿⣿⠂⢀⠀⠀⢀⡼⢀⣠⡴⠟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⠇⠀⠀⠀⠀⠀⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡏⠀⠀⢀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⣿⣠⣿⣶⡾⠿⢿⠋⠁⠀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡟⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⢯⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣁⣴⡶⠾⠿⠏⣀⣠⡤⠿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡟⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⣇⠀⠀⠀⠀⠀⠀⢀⣀⢶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣾⣿⢀⣾⣧⣠⡴⠟⢂⡴⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡼⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⠀⣙⣿⣷⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢻⣿⣿⡟⠋⢹⣇⣦⣶⠟⣀⡾⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡇⠀⠀⠀⠀⠀⠀⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠁⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⢀⣹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣶⣿⣿⣟⣻⠛⠉⢀⣠⡼⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⡼⠃⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⢸⠀⠀⠀⠀⠀⠐⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣏⣿⠏⠉⠁⢀⡘⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣧⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡏⠀⠀⠀⠀⣸⠀⠀⠀⠀⠀⢨⣿⣿⣿⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣽⣿⣾⣿⣿⡀⠀⣼⠸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡆⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀⠀⢰⠏⠀⠀⠀⠀⢀⣾⣿⣻⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⡞⢃⣶⡿⠶⠶⠆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⣇⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⢀⡿⠀⠀⠀⠀⢀⣾⢿⣿⣿⣿⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣫⣿⣿⣄⠈⠀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠋⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀⠀⢸⠁⠀⠀⠀⠀⣼⣿⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⣼⣿⣿⡷⠦⠄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠏⠀⠀⠀⠀⠚⠀⠀⠀⠀⢠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡷⣿⣷⡾⠿⣋⠀⠀⠀⢀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣿⠛⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢿⣴⣶⣿⣿⣶⠚⢋⢠⡾⣱⠟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⡞⠛⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠐⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣾⣿⡇⢹⣤⣿⠟⢛⡵⠂⠀⠀⠀⠀⠀⢰⣆⣀⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⡞⠋⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⣻⡟⣹⡏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡿⣿⣽⣿⡿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⡾⢿⡁⣠⠞⢡⣖⡀⠀⠀⢀⣠⣤⣿⡏⣩⠍⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣦⡞⠁⣹⣟⢿⣿⣿⣿⣿⣿⠟⣿⣩⠿⣿⠁⣿⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⠇⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⣿⠿⢻⡅⣀⡾⢃⠉⠉⠉⢉⣉⣽⣯⣿⣇⣀⣠⣤⠤⠄⠀⠀⠀⠀⠀⠀⠀⠈⠻⣷⣞⡁⠈⣻⠿⢶⡷⠶⢿⠚⠻⡇⣀⣽⣾⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣯⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⣿⠟⠛⠁⠀⣿⠈⠉⢻⣿⠃⢸⣤⣄⠀⣰⣟⣁⣈⣉⣹⣿⡷⠒⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⠿⣷⣤⣼⣧⣤⣾⣷⣾⠿⠟⠋⠀⠀⠀⠀⠀⢀⡠⣤⡀⠀⠈⢷⣿⣿⣤⣤⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠟⠋⠁⠀⠀⠀⠀⣿⢀⣴⠟⠻⡄⢸⣿⣿⠛⠁⠉⠉⠉⠉⣩⠿⢿⣤⠤⠤⠤⠶⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠉⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⡄⠸⣷⡏⠙⠓⠀⣾⢿⣿⣟⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⣿⣿⣿⡿⠋⠀⠀⠀⠀⠀⢠⣤⣼⠿⠋⠁⢠⣤⣿⣿⣿⣸⣀⠀⠛⣦⣤⣾⣥⣤⣤⠿⢶⣛⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣤⣷⣿⣏⠻⠄⠀⣿⡧⠘⢿⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⣿⣿⡿⠛⠁⠀⠀⠀⠀⠀⠀⠛⠛⠁⠀⠠⠼⠟⢛⣫⠟⢛⣿⣿⣟⣻⡷⠟⣼⣶⣦⣤⠐⠒⠛⢿⡄⣠⣇⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠰⢦⡜⣿⣿⡏⠙⢧⡀⣿⢿⡟⠛⠿⠿⠯⠉⠙⢿⣯⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⢸⣿⣿⠟⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣤⣴⣯⣥⣶⣛⣡⠟⢿⣜⣧⣾⡽⠋⣹⣟⠻⠿⠟⢻⣟⣿⡿⠁⠀⠀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣤⣤⡀⣴⣿⡿⣿⡟⠛⠛⣿⡟⠛⣿⣶⣀⡀⠀⠀⠀⠀⠀⠉⠻⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⠛⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠛⠋⠉⠀⠀⠉⠉⢁⣤⢴⣿⣿⡟⠐⣶⣿⠋⠀⠀⠀⢸⡏⠉⠳⣤⣤⡾⣿⠀⠀⠀⣤⠀⠀⠀⢀⡀⣧⡀⡄⠀⠀⣀⣸⣿⣿⡉⠈⡇⠀⠁⢀⣰⣿⡛⠶⠭⠭⠿⠶⠶⠃⠀⠀⠀⠀⠀⠀⠈⠉⠛⠻⢿⣽⣿⣿⣿⣿⣿⣿⣿⡇
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠶⠶⠶⠶⠛⠋⢁⣙⣿⣾⣿⣧⡤⠴⠖⢠⣼⠛⠛⠛⠛⠛⣶⣿⣤⣴⣞⣿⣀⣆⣀⣸⣧⣿⣿⡷⢶⣾⣉⣀⣨⡿⣿⣄⢲⣆⠀⣼⡟⠈⠙⠛⠶⠆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠉⠙⠛⠿⠿⣿⣧
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⣶⡶⠾⣿⢿⡿⣿⣿⣥⣤⣴⡿⣿⠈⠉⣉⠉⠙⠛⠛⠛⠛⠻⣿⣬⡏⢈⣏⣰⡇⠸⣧⠀⠀⠀⢹⡇⠀⠀⠙⢻⡿⢳⣿⣿⣦⣤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠴⠞⠁⢸⡷⠿⠟⣿⣿⣾⣟⠁⠀⠀⣿⠀⡀⠀⢶⣀⣶⣀⣿⣀⣠⡿⠿⠛⠀⠀⠀⠀⠀⠀⠈⠁⠀⠠⠤⠬⣷⣿⠬⣿⣿⣆⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢉⣉⡼⠿⣍⠛⠂⠀⣿⣼⣇⡼⠀⠉⠉⠉⠁⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⣸⣂⣠⣾⡯⠟⠙⠛⠛⠉⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠶⠶⠋⢁⡾⠂⠈⣳⣶⣷⣿⣿⡿⠃⠀⢠⡄⢰⡆⡀⠀⣀⠀⣀⣀⠀⡀⠲⣦⣴⣾⣿⣟⣽⣋⣉⣉⣉⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⣄⣀⣤⠟⠉⠉⠉⠭⠽⣿⣿⢿⣧⡀⢀⣼⠃⡾⣁⠙⣶⡇⠀⢈⣹⣿⣿⣾⣿⣿⡛⠋⠉⠉⠉⠉⠉⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
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==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
Bad map projection #248: Madagascar

Mercator projection but with the North Pole in the Indian Ocean so it exaggerates the size of Madagascar instead of Greenland

{{comic discussion}}

[[Category:Bad Map Projections]]

1549: xkcd Phone 3

2022-04-29T20:42:56Z

172.69.33.225: /* Explanation */

{{comic
| number = 1549
| date = July 10, 2015
| title = xkcd Phone 3
| image = xkcd_phone_3.png
| titletext = If you're not completely satisfied with the phone after 30 days, we will return you to your home at no cost.
}}

==Explanation==
This is the third entry in the ongoing [[:Category:xkcd Phones|xkcd Phone series]] which parodies common smartphone specs by attributing absurd or useless features to a fictional phone that sounds impressive but would actually be very impractical. The previous comic in the series [[1465: xkcd Phone 2]] was released over half a year before this one and the next [[1707: xkcd Phone 4]] was released almost a year later.

;2 AA batteries (not included)

:A phrase usually shown on small, low-powered, electronic devices like remote controllers, and not on cellphones; which use lithium-ion batteries and need to be periodically recharged for continuous use.

:The apparently thin phone (according to the scale as judged by the wristband) would also preclude inserting AA batteries, unless a protruding battery compartment is hidden out of view on the back of the phone.

:Alternatively could mean two Anti-Aircraft (artillery) "batteries" which would be groups of light or medium artillery pieces or missiles (2 to 9 weapons per battery, depending on country, weapon system and organization). In any case, they would badly hamper the portability of the phone.[[[285: Wikipedian Protester|''citation needed'']]]

;Boneless

:Reference to meat or fish products being boneless, i.e. having all the bones removed, making it convenient to cook or eat. Phones do not typically have bones{{Citation needed}}, so this is wholly unremarkable. A possible reference to the iPhone 6's reported problems with its chassis, where it {{w|IPhone 6#Bendgate (chassis bending)|could bend under pressure}}.

:Likely a reference to "Bone Conduction Microphones" implying that needing bones to work is a disadvantage and this phone has the feature of being "Boneless".

:[[xkcd Phone 4]] was instead "seedless".

;Ear screen

:An overcomplicated term for a speaker, connecting a screen which emits light to send visual information and the portion of a speaker which vibrates to send auditory information. Comparing the two makes a speaker a screen for the ear.

:Could also be implying that there's a screen protecting the user's ear from the phone's internals, or the reverse.

;Heartbeat accelerator

:A mashup of heartbeat sensor and accelerometer. May be some sort of external pacemaker. If that's the case, it's worrying that it only accelerates, potentially causing a positive feedback (heart attack). It may also be the result of the phone being so exciting or frustrating that it increases its user's heart rate.

;MobilePay money clip

:While mobile pay is a form of payment involving electronic transfers via cellphone, this model includes a money clip; a way of holding physical bills together, which defeats the purpose of electronic payment. Because you can take cash wherever, this is a "MobilePay" using physical money.

;Siri, or whoever it was we put in here

:A joke on intelligent personal assistants. It also hints that Siri and the like are actual people, trapped inside of phones, which is not the case{{Citation needed}}.

;Instead of being on surface only, screen goes all the way through

:A reference to surface screens. Possible reference to smartphones with screen display wrapping one or more edges, like Samsung Galaxy Note Edge or Samsung Galaxy S6 Edge, or dual-screen smartphones with screen on the back (usually e-ink) like YotaPhone 2, or smartphones with minimal bezel like e.g. Sharp AQUOS Crystal.

:Screen going ''all the way through'' would leave no place for innards of smartphone: processor, battery etc., and unless each layer is designed to be semi-transparent to see the inner {{w|voxel}}s the inner displays would be unseeable anyway.

;theknot.com partnership - phone licensed to perform wedding ceremonies and does so at random

:[https://www.theknot.com/ theknot.com] is a website that assists in all stages of wedding planning. Due to this partnering, the phone has apparently obtained legal status as a {{w|Justice of the peace}} capable of performing legally valid marriages. It exerts this capability randomly, however, so the phone's owner (or potentially any other unsuspecting bystander) could suddenly find themselves with a new spouse without their knowledge, generally an undesired effect{{Citation needed}}. Whether this would result in unintentional {{w|bigamy}} or if the phone restricts itself to pairing up singles, or even enacts divorce first if necessary, is left unclear. May be a reference to how same-sex marriage was fully [http://en.wikipedia.org/wiki/Obergefell_v._Hodges legalized] in the United States just two weeks prior to the release of this comic.

;Fingerprint randomizer

:Presumably randomises the user's fingerprint, which may or may not be inconvenient depending on the intent of the user. It is not clear whether the device will change the person's fingerprint into a human-like fingerprint that is randomly selected from all possibilities, or if it completely mangles the fingerprint of the user. Either way, physically altering the user's finger to this degree will likely involve a painful process. Likely a cynical reference to fingerprint scanners, which are touted as password replacements.

;USB E (hotswappable)

:A USB port that makes fun of the three current systems, A, B, and recently C, by skipping D completely and jumping to E. The port presumably charges the phone and allows to transfer files like normal, but this kind lets you perform {{w|Hot swapping}} (replacing computer system components without turning the system off) with it, which has always been a feature of USB, so mentioning it is redundant at best.

:May be a reference to the eSATAp (Power over eSATA) hybrid port that is functioning as a USB and eSATA port at the same time. The Serial ATA bus interface has standardized hot swapping support.

;Waterproof, but can drown

:Perhaps a reference to Siri or the person trapped in the phone drowning, but the phone itself staying functional. This is another human-like function, which the first 2 XKCD Phone comics had.

;Foretold by prophecy

:Likely mocking people on the internet who attempt to predict when Apple will release their next device. Might also be a joke on many videogames or fantasy novels, in which the main character is 'the chosen one', because 'the prophecy' foretold it.

;Runs Natively

:Usually a description given to ported software, as this statement doesn't make any sense when referring to hardware (notable {{w|Transmeta Crusoe|exceptions}} to the norm are few and far between). When software writers would like to run their apps on multiple platforms, they usually have three choices: re-compile the source code into each platform's codebase (often requiring tweaking to handle practical differences in resources between the systems); use a specially 'pre-portable' code that you can {{w|write once, run anywhere}}, such as Java, but requires a suitable interpreter to be written for each platform (and may still require code tweaks to absorb differences in implementations); create a specific emulator/virtual machine to allow existing code to 'see' the platform it was written for, despite the underlying system.

:Only the first option is 'running natively', often the most optimised and thus best-performing option, and is usually qualified such as "Runs <Software Name> natively", for particular packages full compiled upon that platform. It would also make little sense for the OS ''itself'' to be non-native, except when intentionally emulating another system (ideally on a more powerful system that can power past the inefficiencies of conversion and translation).

:Or, in this case, it may be that the phone has legs and can literally run.

;Wristband

:Probably mocking trending smart watches, this feature would not be very useful on a full-sized smart phone, as it would be uncomfortable to wear due to its size. Also possibly a follow-up to xkcd Phone 2 being described as a 'phone for your other hand', as the wristband would make it possible to have all three phones accessible at once.

;Wireless discharging

:Some modern smartphones use a system called "wireless charging," in which power is delivered to the phone without a wire. This phone, however, uses wireless technology to discharge the phone, which would be useless given that the phone needs power and removing power from its battery doesn't seem to help... May also refer to the standard behavior of the phone's antenna, which communicates wirelessly via EM radio waves, but discharges the battery in doing so. It could also be simply and literally describing the nature of all cell phones, and indeed all battery-powered electronic devices, to gradually use the battery (discharging) when there are no wires attached (wireless), since wireless also means no power cord is plugged in (and assuming the absence or non-use of the aforementioned wireless charging function, which this phone may not even have). Depending on the avenue of discharge, this may also be related to the heartbeat accelerator, accelerating the user's heartbeat by shocking them. Notably, a few recent flagship phones now have a built in Qi wireless charging pad, so other devices can charge from its battery; this is usually marketed as power-sharing but could also be called wireless discharging.

;Magnetic stripe

:Likely a dig at the NFC (near-field communication) wireless radio modules in many modern phones. NFC allows, among others functions, mobile payment. This magnetic stripe could be a cheap way to imitate payment functionality, but "compatible" with classic credit cards.

:Magnetic stripes are a data storage method used by devices such as credit cards and key cards to hold and transfer small amounts of information like key codes. Usually cellphones don't have them as they utilize more robust and protected ways to store and transmit data (such as NFC). The magnetic stripe shown would likely be unusable with current magnetic stripe readers due to the phone's thickness, in contrast to that of regular cards, thus breaking all imagined 'compatibility' arguments.

:It would also be very annoying as it seems to block part of the screen, albeit a small portion.

:However, some modern phones actually have {{w|Magnetic secure transmission}} which allows them to interface wirelessly with magstrip readers by simulating the magnetic field from a passing magnetic stripe.

The phrase "We made another one®©™" is a reference to how phone companies release new phones very often, and the trademarks that surround the phone itself.

The title text is a joke on guarantees and customer service. Usually the advertisement says that if the customer is not satisfied with the product, they'll refund the money and take the product back at no additional cost. In this case they guarantee the customer they'll send him/her home without charge; implying they won't fix or refund anything. Or that due to anticipated but unspecified faults of some kind, the phone's owner will ''need'' help to get back home when things go wrong, and probably be thankful for such assistance, in yet another example of a worryingly non-specific 'reassurance'.
In addition, it says it would do so only AFTER thirty days, as opposed to the usual thirty-day return guarantee, which means you may be stuck with your phone for a month until you can be taken home yourself.

==Transcript==
:[An image of a smartphone lying down, with many labels pointing to it. There is a black stripe across the top left corner of the phone. At the top right something is protruding from the side, like a volume control. There is a wrist band (only partly shown) attached to the middle of each side of the phone. Above the screen are several small features, below only a central square and on the bottom a socket. Clockwise from the top left the labels read:]
:2 AA batteries
:(not included)
:Boneless
:Ear screen
:Heartbeat accelerator
:MobilePay money clip
:Siri, or whoever it was we put in here
:Instead of being on surface only, screen goes all the way through
:theknot.com partnership: Phone licensed to perform wedding ceremonies and does so at random
:Fingerprint randomizer
:USB E
:(hotswappable)
:Waterproof, but can drown
:Foretold by prophecy
:Runs natively
:Wristband
:Wireless discharging
:Magnetic stripe

:[Below the phone:]
:Introducing
:<big><big>The xkcd Phone 3</big></big>
:We made another one®©™

{{comic discussion}}

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

Talk:2613: Bad Map Projection: Madagascator

2022-04-29T18:06:58Z

172.69.33.225: Clicking on the map brings up the projection!

Hopefully the vandal won't bother this one. [[Special:Contributions/172.70.211.18|172.70.211.18]] 17:23, 29 April 2022 (UTC)

Anyone else want to play this (and the other bad map projections) as maps in a 4X/Grand Strategy game? [[User:Mazz0|Mazz0]] ([[User talk:Mazz0|talk]]) 18:02, 29 April 2022 (UTC)

Clicking on the original comic brings up the actual projection used, it looks like.