explain xkcd - User contributions [en]

Talk:2665: America Songs

2022-09-11T03:59:22Z

Adrgru: Some more examples

Many of these rely on "ia"/"ie"/"io" serving as the 3rd and 4th syllables, so every song would be sung like "God Bless <s>Olimpiya</s> Algeriya". Virginia Beach appears to be the only one to escape this.--[[User:Magtei|Magtei]] ([[User talk:Magtei|talk]]) 19:39, 29 August 2022 (UTC)
:As a Washingtonian, I pronounce Olympia without the diphthong (so four syllables; the “a” being distinct). It’s probably a dialect thing, and some pronunciations are more common than others, but as long as one fairly-common pronunciation scans, I think it’s fine. [User:Szeth Pancakes|Szeth Pancakes] ([[User talk:Szeth Pancakes|talk]]) 03:37, 30 August 2022 (UTC)
::Alright, bad example. Skipping it is unheard of in areas further south. Do you (or a large part of the US) fully pronounce most dipthongs, [https://www.howmanysyllables.com/syllables/syria Syria with three syllables], etc.?--[[User:Magtei|Magtei]] ([[User talk:Magtei|talk]]) 07:02, 30 August 2022 (UTC)
:::I can't speak for the rest of the US, but in the case of places I usually pronounce the extra syllable. Virginia is the one exception I can think of right now. [[User:Szeth Pancakes|Szeth Pancakes]] ([[User talk:Szeth Pancakes|talk]]) 21:08, 30 August 2022 (UTC)
:There are also some locations with three-syllable names, such as Detroit Lakes or Fergus Falls (both located northwest of St. Cloud, Minnesota) which, although not listed by Randall, will also work and not use the noted syllables. [[User:RAGBRAIvet|RAGBRAIvet]] ([[User talk:RAGBRAIvet|talk]]) 02:35, 30 August 2022 (UTC)

This phrase, "scans to", has me confused. Can the explanation address what this is supposed to mean?
--anon 16:23, 29 August 2022
:You betcha [[User:Szeth Pancakes|Szeth Pancakes]] ([[User talk:Szeth Pancakes|talk]]) 20:38, 29 August 2022 (UTC)
::What does scanning mean in relation to sung verse? Just syllables and their stress pattern, or is their more? [[Special:Contributions/172.69.34.28|172.69.34.28]] 23:11, 29 August 2022 (UTC)
:::I'm not familiar with the term, but I assume it's related to scansion. If I'm right, it's probably just syllables and stress pattern. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 06:52, 30 August 2022 (UTC)
::::- There was a young man from Japan
::::- Whose limericks never would scan.
::::- And when they asked why,
::::- He said "I do try!
::::- But when I get to the last line I try to fit in as many words as I can."
::::...though – and this is me talking, not the famous limerick – after making sure your poetry rhymes (if you want it to; and/or assonate, consonate, etc) and scans (some words are tricky, as mentioned, according to dialect/accent/etc) you also need to check the meter (does it obviously flow and split in patterns like the iambic one where "da-DUM da-DUM-da DUM-da DUM-da-DUM" might be how it works with word-boundries).
::::You might be wise to avoid words like "vehicle" with theoretically, two to four syllables and all kinds of stress-patterns and vowel-sounds (c.f. stereotypical Deep South, north British, Aussie, etc), at least as an early (establishing) element. Maybe you can set up its far more knowable rhyme/scan/metering partner first and rely upon the reader adopting the intended variation (give or take the relatively opposing strengths of writer/reader accents, etc) after being given the prior clue.
::::I would personally say the scan(sion) is mostly the simple syllable count, and may need some writing tricks ("learned" as in "I learned something" and "learn'ed" as in "a very learned person") to convey well during sight-reading or initial internalised read-through.
::::On that, I personally have some problems reading "-ya" syllables as singular (depending upon what the preceding symbol is, I would consider it a "-ee-ah"/"-ee-uh" (or mid-point) with a cut-down "-ee-"), while I have no problem with the "-lm" dipthong/whatever (c.f. Northern Irish tends to clearly enunciate as "fill-um" for 'film', whilst I might almost consider it a syllable/beat of its own). But I suspect the right voice (internal or external) could convince me of any of those examples as given, eventually... ;) [[Special:Contributions/162.158.159.105|162.158.159.105]] 13:46, 30 August 2022 (UTC)

Aussie here: we tend to say (and sing) "Australia" with three syllables. For example, see the [https://www.pmc.gov.au/resource-centre/government/australian-national-anthem-scores Australian national anthem]. Occasionally two syllables: Straya mate!! But saying it with four syllables is perhaps an American thing. [[Special:Contributions/162.158.2.207|162.158.2.207]] 21:19, 29 August 2022 (UTC)
:Interesting! It probably is a dialect thing. As an American, I've always pronounced it with four. [[User:Szeth Pancakes|Szeth Pancakes]] ([[User talk:Szeth Pancakes|talk]]) 21:23, 29 August 2022 (UTC)

In the comic, Saskatchewan is spelled as Sasketchewan. Might be fixed later?

Just putting this here: https://www.quora.com/A-lot-of-place-names-in-the-USA-have-four-syllables-Minnesota-Chattanooga-Albuquerque-Tallahassee-Talladega-Massachusetts-Massapequa-Mississippi-Cincinnati-Sacramento-Indiana-Alabama-Oklahoma-etc-Is-there-a (with the understanding that "scanning" doesn't necessarily mean only the number of syllables, e.g. Al-BUH-ker-key has the wrong stress pattern.)[[Special:Contributions/172.70.210.49|172.70.210.49]] 21:51, 29 August 2022 (UTC)
:Hot dog, jumping frog, Albuquerque! [[Special:Contributions/172.69.79.211|172.69.79.211]] 22:03, 29 August 2022 (UTC)
::''AlBUquerque, AlBUquerque, God shed his grace on theee...!'' [[Special:Contributions/172.70.207.8|172.70.207.8]] 22:46, 29 August 2022 (UTC)

Does anyone know how to craft a Wikidata query for all the place names with four syllables following the .'.. stress pattern? We should probably say how many there are. [[Special:Contributions/172.70.214.183|172.70.214.183]] 23:15, 29 August 2022 (UTC)

Jurassic park, Jurassic park, how lovely are thy branches… [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 23:31, 29 August 2022 (UTC)

The pronunciation of Vidalia, Georgia, is "vi-DAIL-ya" -- three syllables, not four. It doesn't actually scan like "America". Seems like the comic is assuming the pronunciation is "vee-DAHL-ee-ah", which would scan.ing
:And the age old question of whether an optional schwa constitutes a syllable rears its head. [[Special:Contributions/172.69.134.161|172.69.134.161]] 05:14, 30 August 2022 (UTC)
::I came to say a similar thing about Montpelier. In Vermont, at least, it has three syllables. [[User:CeramicMug|CeramicMug]] ([[User talk:CeramicMug|talk]]) 10:42, 30 August 2022 (UTC)

I simply wish to note the similarity to "Thighs" (#321), which is one of my favorite xkcd comics and one that I find comes to mind surprisingly often.

For changing the tune of a song but not the lyrics (or the lyrics in entirety but not the tune), see the title text to 788: The Carriage [[Special:Contributions/172.70.131.126|172.70.131.126]] 11:24, 30 August 2022 (UTC)

Shirley [surely] there must be some overlap between XKCD and "Weird Al" Yankovic fans, but no one has yet mentioned that Randall missed the "American Idiot"/"Canadian Idiot" overlap, mentioning the former but not the latter? '''--BigMal''' // [[Special:Contributions/172.70.114.87|172.70.114.87]] 14:12, 30 August 2022 (UTC)

Needs a better explanation of "scans" (short for Scansion). Something something ''Syllables'', something something ''stress pattern'', something something ''rhythm''. I'd write it myself, but no one wants a 30 page thesis on the topic. PS to those complaining certain locations usually use a three syllable pronunciation... poetic license frequently stretches (usually middle or penultimate) syllables to cover two beats, even without changing vowel length (although it's more common to do so). At least, in English; some other languages are not as flexible in this regard. --- [[Special:Contributions/172.70.214.79|172.70.214.79]] 16:15, 30 August 2022 (UTC)

Should it be noted that one of the implicitly suggested songs, "America", from West Side Story, replaced with "LaGuardia", was in fact done in the Saturday Night Live sketch "Airport Sushi" in 2020? [[Special:Contributions/172.69.70.41|172.69.70.41]] 22:32, 30 August 2022 (UTC)
: Omission would clearly be a travesty, but do you have a YouTube link? [[Special:Contributions/172.70.210.243|172.70.210.243]] 02:57, 31 August 2022 (UTC)
::[https://www.youtube.com/watch?v=6d7Vk_qaiB8 "Your wish is my command, Kemosabi."] 2m30s. [[Special:Contributions/172.70.206.213|172.70.206.213]] 04:36, 31 August 2022 (UTC)
:::I was going to !vote against inclusion until the David Byrne wrap-up. [[Special:Contributions/172.70.210.243|172.70.210.243]] 04:54, 31 August 2022 (UTC)
:::The closed captioning is very inaccurate in that video, but exposes information about the pre-pandemic closed captioning cost benefit analyses. [[Special:Contributions/172.70.206.95|172.70.206.95]] 05:13, 31 August 2022 (UTC)
::::WHAT? lol, I fukn love this site. [[Special:Contributions/172.69.33.25|172.69.33.25]] 05:33, 31 August 2022 (UTC)

Hmmm... It says above that "Antarctican Idiot" scans with "American Idiot", but "Ant-arc't-" and "Am-er-" are disjointed, if both "-ic-an" endings are the same. Or is it "-tic-" against "-ic-" (and possibly "An-tar'c-" vs "Am-er-")? Still voices funny, and with the former needing much more tongue-teeth complexity, in direct replacement. It's certainly hard to speak as a direct replacement, I'll try to get someone to speak them to me later, to get the proper listener experience, but right now I have my doubts that it's entirely valid. (Possibly less of a problem, but not removing all the issues, if you ellide the first 'c' from your voicing. This seems to be a thing. But "Arctic" is a solidly c-pronouncing word, so "Antarctic" should also be.) [[Special:Contributions/172.70.91.80|172.70.91.80]] 14:01, 31 August 2022 (UTC)

I like to be in Gondwanaland

Okay by me in Gondwanaland

Everything free in Gondwanaland

For a small fee in Gondwanaland!
[[Special:Contributions/172.70.90.223|172.70.90.223]] 22:39, 1 September 2022 (UTC)

: Oh Middle Earth! Our home and native land! [[Special:Contributions/172.70.85.163|172.70.85.163]] 11:53, 2 September 2022 (UTC)

I was ABOUT to point out how Canada doesn't scan with America, but Canadian scans with American, but I see someone already noted that. :) I sing Dennis Leary - Asshole at karaoke sometimes, and he uses "American" a couple of times - "the way our American hearts beat" - and as a Canadian I like to swap in Canadian. :) [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 05:06, 3 September 2022 (UTC)

I propose accepting "mar-AH-la-go" as scanning, simply so people can write cool parody songs. [[User:These Are Not The Comments You Are Looking For|These Are Not The Comments You Are Looking For]] ([[User talk:These Are Not The Comments You Are Looking For|talk]]) 05:00, 5 September 2022 (UTC)

Here are some more:
* Afghanistan, Turkmenistan, Uzbekistan, Tajikistan
* Liberia, Nigeria, Bolivia, Siberia, Somalia, Albania, Bulgaria, Colombia, Cambodia, Armenia, Australia, Dominica, Estonia, Mongolia, Romania, Slovenia, Slovakia, South Africa
* El Salvador
* the Alamo, the Netherlands, the Gambia
-[[User:Adrgru|Adrgru]] ([[User talk:Adrgru|talk]]) 03:59, 11 September 2022 (UTC)

2586: Greek Letters

2022-03-23T01:22:22Z

Adrgru: /* Greek letters */ typo

{{comic
| number = 2586
| date = February 25, 2022
| title = Greek Letters
| image = greek_letters.png
| titletext = If you ever see someone using a capital xi in an equation, just observe them quietly to learn as much as you can before they return to their home planet.
}}

==Explanation==
{{incomplete|Created by '''''O R B S''''' PRO®- Missing explanations for some letters. The text for each letter should be in the explanation with an attempt at explaining it. This has not been included and many of the letters have no explanation of the given text, only for what they actually are used for. Do NOT delete this tag too soon.}}
Mathematics uses lots of Greek letters, typically using {{w|Greek_letters_used_in_mathematics,_science,_and_engineering|the same letter consistently}} to represent a particular constant or type of variable. This comic gives a (non-)explanation of what they typically mean, see [[#Greek letters|below]].

In the title text the joke about capital Xi from the main comic is continued. In the main comic those using Ξ (capital xi) greets us as Earth mathematicians, indicating they are not from Earth, but have come here to learn what we know of math. In the title text the idea that any one using Ξ must be aliens is made clear. So if you ever meet someone using this letter while doing math, then learn as much as you can by quietly observing them, before they return to their home planet. Either learn from their possible advanced math (that allowed them to construct a way to get from one star system to another), or learn about them as the aliens species they represent.

Previously [[Randall]] made a similar comic, [[2520: Symbols]], about math symbols.

===Greek letters===

* '''π (lowercase pi): This math is either very simple or impossible.''' — Typically used to refer to the constant ratio between a circle’s circumference and its diameter (approximately 3.14). In a common school curriculum, this constant first shows up in introductory geometry classes, which would be considered "simple" by advanced mathematicians. But often, pi can show up seemingly randomly in advanced equations that have nothing to do with a circle at first glance, such as in infinite series. And because pi is transcendental, it can sometimes be difficult to work with pi in those situations. The comic may also be a reference to the impossibility of squaring the circle.
* An alternate explanation is that the comic refers to how the symbol can sometimes be used as a variable where the 'p' sound might make sense, such as in the prime-counting function where it stands for "prime" or the Buckingham π theorem where it stands for "parameter." These uses can be confusing to students who have only ever seen a lowercase pi used for the circle constant. This has pushed college courses to use it less and less frequently for anything other than the circle constant, so that now you are only likely to see π as something else in higher math. (More confusing still is the variant lowercase pi, so-called omega pi {{w|Pi_(letter)#Variant_pi|ϖ}} sometimes used for angular frequency instead of the more common (and very similar-looking) lowercase omega ω. In Astronomy, ϖ is traditionally used to denote the {{w|Longitude of the periapsis|longitude of perihelion}}.)

* '''Δ (capital delta): Something has changed.''' — Typically prefixes a variable to refer to a macroscopic change in or finite difference of that variable. For instance, Δ'''v''' may be the finite change in velocity '''v''' over some finite time span, while Δ[''f''](''x'') represents the forward difference of ''f'' at ''x'', defined as Δ[''f''](''x'') = ''f''(''x''+1) - ''f''(''x'').

* '''δ (lowercase delta): Something has changed and it's a mathematician's fault.''' — Used in calculus. In many areas of maths we study systems by introducing small changes (perturbations) in input variables and observing how the system changes. The perturbations introduced are often written down as ''x'' → ''x'' + ''δx'' for some variable ''x'' we're perturbing, where ''δx'' is the change we've introduced. These are often applied in physics (perturbation theory, principle of least action, Noether's theorem,…). Since this change was purposefully introduced by the mathematician instead of occurring naturally, it is therefore their fault.

* '''θ (lowercase theta): Circles!''' — Used in trigonometry. Typically used to refer to an angle, and is notably used in the polar coordinate system. The text refers to its close relationship with circles, on which the polar coordinate system is based. In European handwriting, the variant form ϑ is commonly used with the same meaning.

* '''φ (lowercase phi): ''ORBS''''' — Typically used to refer to another angle other than one referred to by theta. It's used in spherical coordinates, and the text refers to how spheres, or orbs, are important in spherical coordinates. Lowercase phi has two forms in modern typography which are confused by this website's default font. In the comic, it has a complete circle with a vertical line passing through it, which is what Knuth called "phi." The alternate form, ϕ, is what Knuth called "variant phi" and can be written in a single stroke. Most fonts reverse the way these symbols are rendered. There is no difference in meaning between the symbols. Additionally, "O R B S" is written with spaces between each letter, possibly a reference to the linguistic phenomena of surreal memes and their tendency to add spaces between letters of "surreal-sounding" words like "orbs".

* '''ϵ (lowercase epsilon): Not important, don't worry about it.''' — Typically used to refer to a very small quantity. ϵ may be an error term in a statistical model (which is usually small if the model is useful), a remainder term in an approximation (same), or an arbitrarily small (positive) quantity in analysis. Although a total cumulative change of "ϵ" is negligible, in analysis, ϵ is most often applied in a context of an infinitesimal change occurring with infinite frequency. The study of ratios of quantities that approach zero gives rise to infinitesimal calculus. Also used for a sequence of transfinite numbers that are unreachable from ω by finite application of addition, multiplication, and exponentiation. This Greek lowercase letter has two common modern variants, ϵ and ε. ϵ is called the "{{w|Epsilon#Unicode|lunate epsilon}}" and may be more common in the U.S. A stylized version (∈) is used as the mathematical symbol for "is an element of." ε is what Knuth called the "variant epsilon" and is never used for the "element of" symbol but otherwise has identical meaning. Because epsilon represents an arbitrarily small (positive) quantity, there's no reason for anyone to worry about it from a practical standpoint. Also used in set theory to show a number is part of a set, e.g. X ϵ Y (x is part of set Y).

* '''<span style="font-family: serif;">υ,ν</span> (lowercase upsilon and nu): Is that a v or a u? Or...oh no, it's one of ''those''.''' — Common in college level physics and engineering equations. <span style="font-family: serif;">ν</span> commonly represents wavenumber in physics as well as a wide variety of other variables, often with names starting in N (e.g. neutron) or V (e.g. viscosity). Lowercase upsilon is rarely used, probably to avoid confusion. The symbols look remarkably similar to Latin u and v, to the point that they are nearly indistinguishable in some fonts; Randall has complained about this before in [[2351: Standard Model Changes]].

* '''μ (lowercase mu): This math is cool but it's not about anything that you will ever see or touch, so whatever.''' — Used broadly in the abstract mathematical fields of category theory and measure theory. Also used in statistics for mean (average). Physicists use Latin letters for the indices of the 3-vectors of classical physics and Greek indices, including μ, for the 4-vectors of special relativity. This leads to μ being ubiquitous in a field which is very far from everyday experience (where speeds approach the speed of light). It is also employed in statistics for the population mean, which is a quantity that the statistician never actually knows and frequently wants to estimate. Equations requiring a μ are thus impossible to apply directly. However, μ is used in physics for the coefficient of friction in the Coulomb model, typically used to approximate resistive forces between dry solids of different material sliding past each other. A very common use of μ in science and engineering is as the symbol of the SI prefix ''micro-'' for a millionth. Unicode has officially added a point for μ as the "micro sign," distinct from its usual codepoint as the lowercase Greek letter mu.

* '''Σ (capital sigma): Thank you for purchasing ''Addition Pro''®!''' — Typically used as a symbol for the sum of a series of numbers. The comic is making fun of summation, pointing out that it's essentially a complicated, "pro" version of simple addition. The capital sigma is often used as the icon for the all-important "sum" button in spreadsheet software. However, the sigma operator is often necessary for explicitly defining infinite sums, avoiding ambiguous notation like an ellipsis (...).

* '''Π (capital pi): ...and the ''Multiplication''® expansion pack!''' — Typically used as a symbol for the product of a sequence of numbers. The joke is the same as for summation. Here, it is advertised as an "expansion pack," a term used for a piece of software that cannot stand alone but adds features to some existing software. Any paid spreadsheet or database program should already have the ability to perform products. The ® symbol indicates that ''Multiplication'' is a registered trademark somewhere, which is unlikely, as the term is not unique. However, common words are registered as parts of longer trademarks rather often.

* '''ζ (lowercase zeta): This math will only lead to more math.''' — Frequently used for the {{w|Riemann zeta function}} in analytic number theory, a function of complex numbers which is challenging even to define and which is the focus of a famously unsolved problem in highly advanced mathematics. Zeta is used much less often in other contexts, such as the ζ-potential in colloidal chemistry, and even there it is likely to just lead to more math. It is also used for another sequence of transfinite numbers, which will also lead to more math.

* '''β (lowercase beta): There are just too many coefficients.''' — This could be a reference to the typical usage of beta to represent coefficients of independent variables in the {{w|Ordinary_least_squares#Linear_model|ordinary least squares regression model}}. Regression can potentially have a large number of independent variables, hence potentially many different betas (differentiated by subscript, or compacted into matrix notation) would be used, while there is only ever a single zeroth-order coefficient α in these models. Alternatively, the comic might suggest whatever source this equation is from has run out of Latin letters to use as symbols, and is now going through the Greek letters.

* '''α (lowercase alpha): Oh boy, now ''this'' is math about something real. This is math that could ''kill'' someone.''' — As the first Greek letter, α is used for a tremendous variety of purposes in math. For example, it is used to represent the probability of a Type-I error (false positive) occurring in a hypothesis test. It could also possibly refer to the {{w|fine-structure constant}} which shows up in high energy physics, atomic physics, quantum electrodynamics, and at least [[1047|one other xkcd comic]]. Alpha could also refer to {{w|angular acceleration}}, and a rapidly-rotating system is capable of killing people in a number of [[123|interesting ways]]. Another dangerous meaning for α comes from ionising α-radiation: while it can be easily blocked by even a sheet of paper, it has been {{W|Alexander Litvinenko#Poisoning and death|used for assassinations}} through ingestion.

* '''Ω (capital omega): Oooh, ''some'' mathematician thinks their function is cool and important.''' — The last letter of the Greek alphabet and thus often seen as momentous (the end, the final word, death). The capital letter has been used as the symbol for a {{w|Omega_function|variety of mathematical functions}}, the {{w|first uncountable ordinal}}, and {{w|Absolute Infinity}}. It is commonly used in physics and electrical engineering as the symbol for {{w|ohms}}, a unit for electrical resistance. Capital omega has produced a fascination in common culture, perhaps due to God reportedly describing himself as "the alpha and the omega" in the Book of Revelation or due to its highly distinctive shape. It is often used to represent something of grave or transcendent significance. So using it to name your function (instead of a conventional symbol like ''f'' or ''g'') may mean you think the function is particularly important.

* '''ω (lowercase omega): A lot of work went into these equations and you are going to die here among them.''' — Used for the {{w|Transfinite_number|least transfinite ordinal number}}, the order type of the natural numbers under '<'. The line about dying here among the transfinite equations may be in reference to the "eternity" of the infinite set it represents. It is also used in physics and electrical engineering for angular frequency, equal to 2π times the frequency, and thus it is ubiquitous in equations dealing with all sorts of wave phenomena. '''ω''' is also used for the angular velocity of a rotating system, defined by '''v''' = '''r'''×'''ω'''.

* '''σ (lowercase sigma): Some poor soul is trying to apply this math to real life and it's not working.''' — In statistics, σ commonly refers to the population standard deviation of a distribution. Many simplified statistical equations substitute the population standard deviation σ for the sample standard deviation s for simplicity, even when this is not justifiable. A common example is using the normal distribution to model the mean of several identically-normally-distributed variables instead of the T distribution. The variant ς is used at the end of Greek words (called the "final sigma") but is rarely used in math or science.

* '''ξ (lowercase xi): Either this is terrifying mathematics or there was a hair on the scanned page.''' — Randall comments that this looks like a strand of curly hair. Xi is used in the {{w|Riemann Xi function}} and sometimes as a variable or function symbol in higher math. It is famously difficult to write in a way that is consistent and clearly distinct from other symbols.

* '''γ (lowercase gamma): ''Zoom'' pew pew pew [space noises] ''zoooom!''''' — Lowercase gamma is used for the {{w|Lorentz factor}}, an important variable in special relativity calculations. Its use implies that you are dealing with speeds approaching the speed of light and therefore with spaceships or other moving objects not confined to Earth. γ-rays are also the highest energy photons, so a space opera might have ships flying near the speed of light firing gamma-ray weapons that go PEW PEW. γ is also used as the symbol for the Euler-Mascheroni constant and occasionally as a variable or function name.

* '''ρ (lowercase rho): Unfortunately, the test vehicle suffered an unexpected wing separation event.''' — Used in statistics to measure association between variables. Lowercase rho often represents volumetric mass density, such as the density of air that a wing might be travelling through. The density of a fluid is directly proportional to the Reynold's number which dictates the sort of physics used to model motion through the fluid. Flying a plane in conditions with a Reynold's number well outside of what it was designed for could have catastrophic consequences. A variant symbol ϱ with the same meaning is common in European handwriting.

* '''Ξ (capital xi): Greetings! We hope to learn a great deal by exchanging knowledge with your Earth mathematicians.''' — Probably the least used Greek letter in math and physics despite being easy to write and to recognize. According to the comic, anyone using this letter is likely a being from another planet. It does see very occasional use, such as in the Riemann xi function or as the symbol for a class of heavy baryons in particle physics. It resembles, but is not to be confused with a "hamburger button" or a triple equals sign ≡. Coincidentally, it also resembles the simplified Hanzi (Chinese) character for the [https://en.wikibooks.org/wiki/Chinese_(Mandarin)/Numbers number 3]. Randall thinks it most closely resembles alien writing.

* '''ψ (lowercase psi): You have entered the domain of King Triton, ruler of the waves.''' — Both capital and lowercase psi are shaped like tridents. In classical mythology, {{w|Triton}} is one of the gods of the sea, alongside his father Poseidon, and tridents are commonly associated with sea gods. In quantum mechanics, either psi is used to represent the wave function of a particle, leading to a pun. (Psi is also used in mathematics to represent the sum of the inverse of the Fibonacci numbers, the division polynomials, and the supergolden ratio, and other purposes.)

==Transcript==
:[A list with 21 explanations of different Greek letters. To the left the letter (on in one case two letters) are shown, and then the explanation is written to the right in one or two lines (and in one case on three lines). Above these explanations there is a header in a slightly larger font:]
:<big>What Greek letters mean in equations</big>
:π This math is either very simple or impossible.
:Δ Something has changed.
:δ Something has changed and it's a mathematician's fault.
:θ Circles!
:Φ '''''O R B S'''''
:ϵ Not important, don't worry about it.
:υ,ν Is that a v or a u? Or...oh no, it's one of ''those''.
:μ This math is cool but it's not about anything that you will ever see or touch, so whatever.
:Σ Thank you for purchasing ''Addition Pro''®!
:Π ...and the ''Multiplication''® expansion pack!
:ζ This math will only lead to more math.
:β There are just too many coefficients.
:α Oh boy, now ''this'' is math about something real. This is math that could ''kill'' someone.
:Ω Oooh, ''some'' mathematician thinks their function is cool and important.
:ω A lot of work went into these equations and you are going to die here among them.
:σ Some poor soul is trying to apply this math to real life and it's not working.
:ξ Either this is terrifying mathematics or there was a hair on the scanned page.
:γ ''Zoom'' pew pew pew [space noises] ''zoooom!''
:ρ Unfortunately, the test vehicle suffered an unexpected wing separation event.
:Ξ Greetings! We hope to learn a great deal by exchanging knowledge with your Earth mathematicians.
:ψ You have entered the domain of King Triton, ruler of the waves.

{{comic discussion}}

[[Category:Math]]
[[Category:Aliens]]

2538: Snack

2021-11-09T02:08:52Z

Adrgru: /* Explanation */ removed duplicated weird

{{comic
| number = 2538
| date = November 5, 2021
| title = Snack
| image = snack.png
| titletext = Although grad students, suddenly reminded that food exists, tend to just grab and devour both without further discussion.
}}

==Explanation==
{{incomplete|Created by the APPLE COOKIE REVIEW BOARD- Please change this comment when editing this page. Do NOT delete this tag too soon.}}

Many psychological studies involve participants being asked to make decisions under varying conditions, to determine how those conditions influence decision making. A common example is to give subjects a choice between eating a healthy snack (such as an apple) or a tasty snack (such as a cookie), which may be used as a simple proxy for whether they're prioritizing long-term health or short-term gratification. In most cases they are not made aware of the nature of the experiment, as knowing the premise of the study is liable to influence their behavior and alter the results. Instead subjects may deliberately be given a false impression of the purpose of the study, or they may be offered a choice under conditions where they're not aware that they're part of an experiment at all.

Examples of experiments like this are the {{w|Stanford marshmallow experiment}} and [https://pubmed.ncbi.nlm.nih.gov/8656339/ this study].

This sort of psychological study is most commonly done by universities, which means that using university students as subjects is generally the most convenient option. This means both that psychological studies tend to be heavily skewed towards the demographics of college students, and that university students have a pretty good chance of being invited to participate in a study at some point.

The joke in this strip is based on the premise that psychology majors are sufficiently aware of such studies that it would make them suspicious of any circumstances which ''could'' be part of a study. If they've studied (or even conducted) such experiments, anything that reminded them of such a study could cause them to become suspicious. In [[Cueball]]'s case this is exaggerated into outright paranoia, and [[Ponytail]] is apparently playing on that to prank him, offering options that could easily be part of such an experiment just to spook him into suspicion.

Studies done on humans are subject to important ethical controls, particularly if the subjects are not fully informed of the study's purpose. "IRB" stands for {{w|Institutional Review Board}}, which is a committee (for example, at a university) which must approve such research to ensure that there's no significant risk of doing harm to the subjects of the study.

The title text jokes that graduate students have so much work to do that they are liable to forget to eat entirely and stereotypically too impoverished to afford adequate amounts of food; when presented with an offer of a snack, they don't ponder the implications or potential ulterior motives, they just eat it quickly and get back to work.

==Transcript==
:[Ponytail, holding a cookie up in one hand and an apple up in the other, addresses an alarmed Cueball. His alarm is shown by six lines radiating away from his head, and he also holds his arms stretched out.]
:Ponytail: Hey, do you want a cookie? Or an apple?
:Cueball: '''''Who are you!? Did the IRB approve this!? Is everyone here an actor!?'''''

:[Caption beneath the panel:]
:The best prank you can play on psych majors is just to offer them a snack.

{{comic discussion}}

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

2455: Virus Consulting

2021-04-29T01:50:23Z

Adrgru: Verb agreement

{{comic
| number = 2455
| date = April 26, 2021
| title = Virus Consulting
| image = virus_consulting.png
| titletext = All our teams make an effort to stay optimistic, but I will say that once our virus division saw the vaccine efficacy data, they started asking for payment up front.
}}

==Explanation==
{{incomplete|Created by a COVID virus. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}
This comic is another in a [[:Category:COVID-19|series of comics]] related to the {{w|2019–20 coronavirus outbreak|2020 pandemic}} of the {{w|coronavirus}} {{w|SARS-CoV-2}}, which causes {{w|COVID-19}}, specifically regarding the [[:Category:COVID-19 vaccine|COVID-19 vaccine]].

This comic imagines a scenario where [[Ponytail]] works for a {{w|consulting firm}}, which offers advice about viruses, specifically COVID-19. Ponytail tells a panel of people (the government?), consisting of [[Hairbun]], [[Cueball]] and [[Megan]], that though they are worried about COVID-19 variants, the fact that the number of people vaccinated is increasing considerably is a good sign. Hairbun then accuses Ponytail's firm of simply "telling them what they want to hear", accusing her firm of giving them false hope to make them keep retaining her firm.

The punchline comes in the final panel where it turns out that Ponytail's colleague, [[Black Hat]], is consulting a different set of clients, which are the viruses themselves. He presents the exact same graph to the viruses and gives them the opposite message: though COVID-19 variants seem to be exciting to them, vaccination numbers are terrible news to their propagation and survival. This repeats the idea of [[2287: Pathogen Resistance]] where the pandemic is seen from the virus' perspective. As in that previous comic, it is the virus that is in a lot of trouble, which is another way of saying that humanity stands a good chance of surviving this situation. (That humanity will survive is also good for the virus, which needs living humans so that it can spread.)

The fact that another member of Ponytail's firm is telling clients that they should be worried is what Ponytail refers to when claiming that her firm does not simply tell clients what they want to hear.

This would not be the first time that Black Hat has given advice to natural disasters that can kill humans, see [[1754: Tornado Safety Tips]].

{{w|Variants of SARS-CoV-2|SARS-CoV-2 variants}}, commonly called "COVID variants", have been in the news. The SARS-CoV-2 virus has mutated into many different strains, some of which spread more easily among humans. It is unknown whether the different variants have a greater individual fatality rate. The current SARS-CoV-2 vaccines from Pfizer-BioNTech and Moderna as well as the Regeneron therapeutic monoclonal
antibodies all effectively protect against at least the New York ({{w|Lineage B.1.526}}), South African ({{w|Lineage B.1.351}}), and U.K. ({{w|Lineage B.1.1.7}}) variants according to [https://www.nytimes.com/2021/04/22/health/covid-ny-variant-vaccine.html two recent study preprints] released April 22, 2021. Further research and peer review is ongoing.

The title text notes that the firm's "virus division" (the group advising the viruses themselves) has started to get worried that their jobs are becoming obsolete, due to vaccine efficacy. Thus, they are demanding to be paid "up front", before consulting/advising services have been rendered to their clients. Dependent upon the expectations of each party, payment can be asked for "up front", deferred for invoicing once services have been rendered, or a combination of the two. The weaker party to a contract may need to submit their transaction, or a guarantor, before the other spends too much effort in fulfilling their side of the contract.

==Transcript==
:[Ponytail stands in front a chart, with a labeled graph with an upward-curving line at the top, and several box-and-whisker plots below, with unreadable text and labels. She is holding a pointer towards the plot while addressing a panel in front of her to the left. The panel is seated behind a desk and is composed of Hairbun, Cueball and Megan. Cueball has one arm on the desk.]
:Ponytail: Now, I know you're worried about the variants, but this graph should be encouraging.
:Ponytail: Your rollout is going well. The vaccines are good. They work.
:Label on graph: Vaccinations

:[Same setting in a narrower panel without the chart. Ponytail has the pointer to her side. Cueball has his arms under the desk as the other two.]
:Hairbun: You're just telling us what we want to hear.
:Ponytail: If you think that, you should see the reports from my colleagues who work for COVID.

:[Close-up of Ponytail in a very narrow panel.]
:Off-screen voice: They work for '''''who??'''''
:Ponytail: Our firm has lots of clients.

:[Black Hat stands in front of an identical chart as in panel one, and points to it with a pointer in the same way as Ponytail did. Only he is looking to the right at his clients. He is speaking to a panel of three large coronaviruses, two of which floats above the desk, the middle one is partly below the desk. Across the top frame of the panel there is a box with a caption:]
:Meanwhile...
:Black Hat: Now, I know you're excited about the variants, but this graph should be terrifying.
:Black Hat: We're in real trouble here.
:Label on graph: Vaccinations

{{comic discussion}}

[[Category:COVID-19]]
[[Category:COVID-19 vaccine]]
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Hairbun]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Black Hat]]