explain xkcd - User contributions [en]

Talk:3075: Anachronym Challenge

2025-04-14T21:20:02Z

162.158.159.36:

Shouldn't "Anachronym" be "Anachronism"? The listed items aren't archaic acronyms. [[Special:Contributions/162.158.63.83|162.158.63.83]] 17:30, 11 April 2025 (UTC)
:No, "-nym" means name, so this is names that are outdated [[Special:Contributions/104.23.190.60|104.23.190.60]] 17:36, 11 April 2025 (UTC)
:: (The OP) Ah, I see now. An anachronym is a term used in an anachronistic way (like tin foil which isn't made of tin anymore), where an anacronym is an word that started as an acronym but is now treated as a word (people no longer think of it as an acronym). Neither term being in common parlance, and being only one letter different, my search for a definition got them confused.[[Special:Contributions/172.70.35.94|172.70.35.94]] 00:20, 12 April 2025 (UTC)

I'm not sure why he should be paying with paper money. He can easily pay by credit card ... using virtual debit card on his phone. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 17:46, 11 April 2025 (UTC)
: Paper money might not be made from paper anymore - at least, it isn't in NZ, where I live. [[Special:Contributions/172.69.0.130|172.69.0.130]] 17:53, 11 April 2025 (UTC)

::I think “paper money” is about paper no longer being made from papyrus. US bank notes are printed on rag paper, which is indeed a kind of paper despite containing little or no wood pulp.--[[User:Seakingsoyuz|Seakingsoyuz]] ([[User talk:Seakingsoyuz|talk]]) 18:20, 11 April 2025 (UTC)

:::Agreed. Rag paper is not just "a kind of paper", it's the original kind of paper (papyrus is not paper in any usual sense, because it is not made from pulped fibers). When paper was invented in China, it was made from rag fibers, and it was still made like that when it was first produced in Europe.

:: I don't think 'paper money' should be designated as being made of paper here. Everyone knows that paper money doesn't feel or act like paper. It's incredibly hard to rip. [[User:DollarStoreBa'al|DollarStoreBa'al]] ([[User talk:DollarStoreBa'al|talk]]) 18:27, 11 April 2025 (UTC)

::: Being Canadian, I thought the reference here was to what's described at Wikipedia as [https://en.wikipedia.org/wiki/Polymer_banknote Polymer banknotes]. --[[Special:Contributions/162.158.127.25|162.158.127.25]] 18:28, 12 April 2025 (UTC)

:The "card" in credit card seems to come from Latin and Greek for a piece of paper or papyrus. So a credit card, now made of plastic, metal, semiconductors, etc. might be considered an anachronym. [[Special:Contributions/162.158.41.95|162.158.41.95]] 19:20, 11 April 2025 (UTC)

Adults who "enjoy" rubber ducks include programmers: https://en.wikipedia.org/wiki/Rubber_duck_debugging [[Special:Contributions/172.71.95.27|172.71.95.27]] 18:40, 11 April 2025 (UTC)

The word money came from words that meant coin. The word coin evidently came from wedge shaped. Not quite anachronym, though somewhat anachronism. [[Special:Contributions/162.158.41.95|162.158.41.95]] 19:11, 11 April 2025 (UTC)

Surprised "lead pencil" didn't make the list [[Special:Contributions/172.68.12.109|172.68.12.109]] 19:13, 11 April 2025 (UTC)
:Not quite the same category. The core of wooden pencils never contained lead, that was always a misnomer by people who didn't know it was actually carbon. [[User:ChaoticNeutralCzech|ChaoticNeutralCzech]] ([[User talk:ChaoticNeutralCzech|talk]]) 08:07, 14 April 2025 (UTC)
::I thought soft metals like lead did work for writing with though, functioning similarly to the graphite in a pencil but possibly needing a rougher surface like chalk does. I'm surprised the name isn't from actual use as I had informally learned it was. I think I tested it by writing with lead solder. In ancient Rome people would write on rougher slate, not sure what they used to write on the slate with though. [[Special:Contributions/162.158.159.36|162.158.159.36]] 21:20, 14 April 2025 (UTC)

Duck Tape is no longer made from ducks! [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 19:30, 11 April 2025 (UTC)

:It Actually got its name from being made from "duck fabric," a kind of heavy very tightly woven cotton fabric. Then there was confusion by a brand putting a picture of a duck on the label, and people using it to join segments of heating ducts together, making people falsely think it was originally called "duct tape," with duck being a fanciful brand name. Originally though it was developed for the military in WW1 to seal ammunition boxes in a waterproof way, but due to widespread improvised uses by soldiers, post war they decided to market it to civilians.--[[Special:Contributions/172.71.255.102|172.71.255.102]] 17:11, 14 April 2025 (UTC)

"digital money" shouldn't be listed as what "paper money" is actually made out of. Nobody would say "I'm paying with paper money" if they are paying with some digital currency. The anachronism is "paper money" being actually made of linen or whatever hi-tech fibers. [[Special:Contributions/172.70.254.211|172.70.254.211]] 19:49, 11 April 2025 (UTC) anonymous user
:Not even ''fibers''. Sheet-polymers (with loads of complex embedded and pressed-in features) are becoming the new go-to for banknotes, in a number of countries. [[Special:Contributions/172.68.205.135|172.68.205.135]] 23:24, 11 April 2025 (UTC)

My wife suggests that this is much easier if you are tech shopping: Apple, Mouse, Spam, Phish, Cookies.[[Special:Contributions/162.158.78.225|162.158.78.225]] 20:03, 11 April 2025 (UTC)
:"Click mouse to accept cookie" meme - featuring rodent and confection. https://i.pinimg.com/originals/06/e6/7d/06e67d6ee5a2afa112bf548463e97125.jpg [[Special:Contributions/172.70.35.94|172.70.35.94]] 00:20, 12 April 2025 (UTC)
:That's not in the same category since computer mice were never ''made of'' actual mice. Anyway, I'm sure there are some examples in tech: '''compressed air''' (gas duster) cans do not actually contain nitrogen or oxygen but a mixture of hydrocarbon gases that can be liquified at pressures obtainable in a cheap can to drastically increase the volume ratio, but I can imagine people might have used actual pressurized air containers for dusting at some point (though likely not commercially). [[User:ChaoticNeutralCzech|ChaoticNeutralCzech]] ([[User talk:ChaoticNeutralCzech|talk]]) 08:07, 14 April 2025 (UTC)

Not sure why "sidewalk chalk" on there and who decides that calcium carbonate is allowed to be called chalk, but calcium sulphate is not. --[[Special:Contributions/108.162.216.196|108.162.216.196]] 05:25, 12 April 2025 (UTC)
:I came here wondering why it was on the list, but for a different reason: It's never been made from sidewalks. Yes, I actually needed to read the list to clear up the misconception. --[[Special:Contributions/162.158.127.25|162.158.127.25]] 18:28, 12 April 2025 (UTC)
::Because, other than the use we give it as "thing you write on blackboards with", chalk is originally a stone made of relatively loose calciulm carbonate (limestone mostly made from foraminifers), which is what was used to write on slate blackboards before we started making them out of pressed gypsum. --[[Special:Contributions/172.64.238.130|172.64.238.130]]

You can still buy solid cast-iron irons. Although I doubt anyone actually uses them for smoothing clothes, more for decoration. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 16:23, 14 April 2025 (UTC)
: If you can still buy _new_ ones update the article! People likely use the old ones in traditional communities though. [[Special:Contributions/162.158.159.36|162.158.159.36]] 21:20, 14 April 2025 (UTC)

== Steel ==

{{w|Stainless steel}} ''does'' contain Fe, so "iron" ain't ''that'' "wrong". [[Special:Contributions/172.70.35.95|172.70.35.95]] 05:48, 12 April 2025 (UTC)
:We have long made a distinction between "iron" and "steel", not to mention that, while stainless steel has about 1% carbon by weight (give or take: sometime more, sometimes less), since carbon is over 4 times lighter than iron, that makes about 4% (and up to 10%) of the atoms carbon, not to mention that, to be stainless, it has to either have a by weight composition of either over 10% chromium or over 8% nickel, which are almost the same weight as iron (a difference of around 5%, lower for chromium, higher for nickel). Given that the average stainless steel has a 18% by weight of chromium, adding that with the carbon means that only 3 out of 4 atoms are iron, and if you have copper and tin or copper and tin in that same ratio, it would long have surpassed the line to be called "bronze" or "brass", respectively. "Having iron atoms" is not the same as "made of iron", mainly when it originally was indeed made out of (wrought) iron. --[[Special:Contributions/188.114.111.245|188.114.111.245]]
::99% is a way higher percentage than say, the amount of nickel in nickels ($0.05 coins): 25% ({{w|Nickel (United States coin)|US}}) or 2% ({{w|Nickel (Canadian coin)|Canadian}}). The latter might qualify for this list because it actually used to be made of near-pure nickel, while the US coin's composition never changed since the first (1866) version that became known as the "nickel". [[User:ChaoticNeutralCzech|ChaoticNeutralCzech]] ([[User talk:ChaoticNeutralCzech|talk]]) 11:48, 14 April 2025 (UTC)

Steel (stainless or otherwise) does not occur naturally. It has to be made. By humans. Out of iron. So in this case 'having iron atoms' DOES mean 'made of (as a synonym of 'from') iron'. [[Special:Contributions/172.70.86.129|172.70.86.129]] 04:11, 14 April 2025 (UTC)

::Bronze contains mostly copper. So I assume you would call it copper, too. --[[Special:Contributions/162.158.130.67|162.158.130.67]] 11:15, 14 April 2025 (UTC)

"Cutlery" specifically refers to metallic implements with a cutting edge. Knives, scissors, and swords are cutlery; Spoons and forks are not cutlery. Table knives, forks, and spoons, collectively are "flatware". [[Special:Contributions/162.158.164.155|162.158.164.155]] 10:01, 12 April 2025 (UTC)
:I was really hoping to re-edit that element, anyway. The comic says "silverware" which can relate to cutlery/other food-implements or to the plates or candlesticks or even ''trophies''. Someone assumed that meant cutlery(+dining implements in general). As well as other improvable writing about the assumption they went with. [[Special:Contributions/172.70.58.49|172.70.58.49]] 22:58, 12 April 2025 (UTC)

I assume the confusion comes from the respecive British and American terms for a collection of forks, knives, and spoons. British English calls these things "cutlery" even if they don't have a cutting edge. American English commonly refers to these as "silverware," especially when made with stainless steel, although I have also heard the term "plastic silverware" or "wooden silverware" when "flatware" would probably have been a more accurate generic term. [[Special:Contributions/172.70.163.35|172.70.163.35]] 18:09, 13 April 2025 (UTC) (an American expat)

== Paper ==

I just want to point out that paper made from cotton fibers instead of wood pulp ''is still paper''. You can buy it in the store. There are non-paper banknotes now, but not in the U.S., and I'd be surprised if polymer banknotes were ever called "paper money". [[User:LtPowers|LtPowers]] ([[User talk:LtPowers|talk]]) 12:35, 12 April 2025 (UTC)
:Be surprised. That's what they're usually called in Canada. --[[Special:Contributions/162.158.127.164|162.158.127.164]] 18:29, 12 April 2025 (UTC)
::And anywhere with polymer bills. "Paper money" = bills. Still, it's true that cotton-linen paper is still paper, so is hemp paper and any other paper made from cellulose fibers (paper can be categorized by cellulose source, average fiber length, thickness, impurities and papermaking method). You can even make paper out of old clothes made from vegetable textiles (like blue jeans, cotton T-shirts or hemp pants). As a weird side note, there are non-cellulose papers, like silk paper, but they are made in the same way as regular paper (which is not how plymer bills are made, to my understanding)--[[Special:Contributions/188.114.111.245|188.114.111.245]]
:::Yeah, I've always heard of it as "paper money" --[[User:Xnerkcd|xnerkcd]] ([[User talk:Xnerkcd|talk]]) 07:10, 13 April 2025 (UTC)

== silverware made of silver ==

When I typed started typing "silverware made" into Google, it suggested "silverware real silver", which brought up a very ad-heavy results page. A few of them were re-selling vintage silverware, but most seemed to be offering "new" designs. I had to scroll down several pages before I found stuff that looked even like a catalog, rather than an ad for one particular possible purchase.

But since it seems like a competitive market, and I wasn't patient enough to look for an informational marketing page, I don't feel comfortable picking one (or several) particular ads as the citation.

Perhaps someone else does. Or perhaps a screenshot archived somewhere. [[User:JimJJewett|JimJJewett]] ([[User talk:JimJJewett|talk]]) 18:09, 14 April 2025 (UTC)

:Since when are ads considered reliable sources? --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 19:24, 14 April 2025 (UTC)

2471: Hippo Attacks

2021-06-03T09:19:55Z

162.158.159.36: /* Explanation */ Added citations.

{{comic
| number = 2471
| date = June 2, 2021
| title = Hippo Attacks
| image = hippo_attacks.png
| titletext = It's cool how, when there's a number lots of people are curious about, but which isn't easy to measure, some random guess will get cited everywhere and become the universally quoted value. Unrelatedly, did you know there are 850 trillion waves in the ocean?
}}

==Explanation==
{{incomplete|Created by a HIPAA-VIOLATING HIPPO. I think we have managed to capture the broad strokes of the comic, but it could use some copy-editing (especially my words), and I am not confident I am not missing some finer details. Do NOT delete this tag too soon.}}

The first part of this comic deals with unreliable sources on the internet. Neither "viral posts" nor "random listicles" are usually very reliable sources of information. They rarely cite their sources, and they are often published without much fact-checking, as published volume and impressive-sounding numbers are far more important for ad-revenue than actual facts.

The viral post appears to be [https://www.facebook.com/clickhole/photos/a.1461385317435063/2945077732399140/?type=3 this Facebook post.] The relevant source is unknown. There are a number of listicles Cueball may be referring to, but they all appear to be citing [https://www.gatesnotes.com/Health/Most-Lethal-Animal-Mosquito-Week the Bill & Melinda Gates Foundation.]

The Health Insurance Portability and Accountability Act ({{w|HIPAA}}, pronounced ''HIP-uh'') is an American healthcare law enacted in 1996. One of the most commonly cited provisions from HIPAA is the HIPAA Privacy Rule, which regulates the use and disclosure of protected health information.

In this comic, Cueball and Megan are discussing the number of {{w|hippopotamus}} attacks, which is unverified. Megan proposes an alternative explanation as to why this particular number is hard to come by: it would be violating the patients' privacy to create statistics of a very specific and unusual cause of death. The punchline comes with the pun on "hippo violation" ("HIPAA violation").

The title text amplifies the criticism of listicles. They sometimes provide factoids with regards to ill-defined, hard-to-measure numbers, and these factoids might end up in common circulation between such articles. One extreme example would be the number of waves in the ocean. Some problems with this definition would be:

* In which ocean/oceans?
* What is the smallest ripple that counts as a wave?
* When does one count two interacting waves as separate, and when does one count them as one?
* Even counting every body of water on the planet, this works out as around 400 waves per square meter, which is - to put it bluntly - a bit too stormy.

With different answers to these questions, wildly different answers could be reached.

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

:[Cueball sits at his computer desk, facing left. Megan stands behind him.]
:Cueball: I hate unsourced statistics.
:Cueball: ''This'' viral post says hippos kill 2,900 people a year, but ''this'' random listicle says 500.
:Megan: Makes sense.
:Megan: Publishing the real number would be a hippo violation.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Animals]]
[[Category:Statistics]]
[[Category:Puns]]

Talk:2453: Excel Lambda

2021-04-22T12:55:51Z

162.158.159.36:

Another ghost cueball comic! You can see it in the last panel. [[Special:Contributions/108.162.216.54|108.162.216.54]] 06:03, 22 April 2021 (UTC)

Someone needs to add an explanation of the Lambda, and possibly how Excel is implementing it. (I suppose it would immediately be useful for cutting down common re-use within a formula line, though =IF(ISERR(FIND(":",A1)),A1,RIGHT(A1,LEN(A1)-FIND(":",A1))) is a trivial repeat of the FIND, once to check, then again to do, I often need to do far more nested things, check for being a value, repeat the FIND to deal with the LEFT, etc.) But it has the smell of being effectively a Macro in this instance. Which already seems to me to be the only way to run a ''proper'' Turing Machine in an Excel column without hitting Circular Reference issues.

Would it be a stretch to say that Turing's inability to prove if Cueball will stop is actually equivalent to the halting problem, except it is for Cueball and not an arbitrary Turing machine? I thought that was pretty funny. [[User:XTheBHox|xTheBHox]] ([[User talk:XTheBHox|talk]]) 11:30, 22 April 2021 (UTC)

Microsoft themselves claim that the addition of LAMBDA makes Excel turing-comlpete (see here: https://techcommunity.microsoft.com/t5/excel-blog/announcing-lambda-turn-excel-formulas-into-custom-functions/ba-p/1925546). Based on this comic, I would argue that it already was... [[Special:Contributions/162.158.159.36|162.158.159.36]] 12:55, 22 April 2021 (UTC)

Talk:2453: Excel Lambda

2021-04-22T09:12:50Z

162.158.159.36:

Talk:2439: Solar System Cartogram

2021-03-19T22:54:05Z

162.158.159.36: /* planet list seems incomplete */

== planet list seems incomplete ==

Where's Pluto?

[[Special:Contributions/172.68.65.154|172.68.65.154]] 20:30, 19 March 2021 (UTC)

::Demoted to dwarf planet status in 2006, to the continued frustration of people like myself. [[User:Captain Video|Captain Video]] ([[User talk:Captain Video|talk]]) 20:33, 19 March 2021 (UTC)

What about exoplanets? [[User:Wilh3lm|Wilh3lm]] ([[User talk:Wilh3lm|talk]]) 20:49, 19 March 2021 (UTC)

:They're not in our solar system. [[User:Bubblegum|bubblegum]]-[[User_talk:Bubblegum|talk]]|[[Special:Contributions/Bubblegum|contribs]] 20:57, 19 March 2021 (UTC)
::We should rectify that ASAP! A few more planets slotted between/woven through the current set would make for some interesting possibilities... [[Special:Contributions/141.101.99.207|141.101.99.207]] 22:52, 19 March 2021 (UTC)

== bad map projection? ==

IMHO, this also qualify as kind of a [[:Category:Bad_Map_Projections|bad map projection]] (in the wider sense of a population density-anamorphic cartogram) [[Special:Contributions/141.101.77.160|141.101.77.160]] 21:11, 19 March 2021 (UTC)