explain xkcd - User contributions [en]

Talk:3196: Aurora Coolness

2026-01-20T19:16:06Z

IIVQ:

second - [[Special:Contributions/45.178.1.151|45.178.1.151]] 03:07, 20 January 2026 (UTC)
:minute [[Special:Contributions/82.13.184.33|82.13.184.33]] 09:31, 20 January 2026 (UTC)
::hour [[User:CalibansCreations|'''Caliban''']] ([[User talk:CalibansCreations|talk]]) 10:24, 20 January 2026 (UTC)
:::day [[Special:Contributions/93.36.184.86|93.36.184.86]] 14:06, 20 January 2026 (UTC)
:::: What [[Special:Contributions/2605:59C8:160:DB08:657A:CBF1:9BDA:C5C|2605:59C8:160:DB08:657A:CBF1:9BDA:C5C]] 14:57, 20 January 2026 (UTC)

I picture people going out on a cold, clear winter night to stare at a shimmering, aurora-filled sky, and then returning to their warm homes to sip hot cups of soup from the microwave, blissfully unaware of how closely related the two events are ... or would be were it not for that thin, thin, layer of mostly diatomic and triatomic gases that is desperately parrying the Sun's murderous assault on our behalf. Yes, yes, I know, I know ...[[Special:Contributions/2605:59C8:160:DB08:657A:CBF1:9BDA:C5C|2605:59C8:160:DB08:657A:CBF1:9BDA:C5C]] 04:07, 20 January 2026 (UTC)
:Makes you wonder why no-one's figured out how to reproduce that in a microwave, so we can enjoy an aurora every time we heat something. [[Special:Contributions/82.13.184.33|82.13.184.33]] 09:34, 20 January 2026 (UTC)
::"Aurora Borealis? At THIS time of year, at THIS time of day, in THIS part of the country, localized ENTIRELY within your kitchen?" [[Special:Contributions/168.8.230.51|168.8.230.51]] 13:57, 20 January 2026 (UTC)
:::In order: Yes, yes, yes, no despite Randall's best efforts. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 14:19, 20 January 2026 (UTC)

The graph in 2914 isn't a function of time, it's a function of how close one is to the path of totality. [[Special:Contributions/137.25.230.78|137.25.230.78]] 05:39, 20 January 2026 (UTC)
: Fixed. [[Special:Contributions/2605:59C8:160:DB08:657A:CBF1:9BDA:C5C|2605:59C8:160:DB08:657A:CBF1:9BDA:C5C]] 06:38, 20 January 2026 (UTC)

New England was getting heavy snow in the days leading up to this comic, so it was probably too cloudy for any auroras to be visible. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 05:42, 20 January 2026 (UTC)

: "''probably too cloudy''" Far north coast of Maine, all I could see was sky-glow from the Walmart 7 miles away. We actually have a Dark Sky movement in this area (lotta old hippies) but Walmart didnt get that memo. --[[User:PRR|PRR]] ([[User talk:PRR|talk]]) 06:02, 20 January 2026 (UTC)

::Indeed. I live about 50km from London in a town with many street lights (and I don't drive). I've never seen an aurora.--[[Special:Contributions/2A00:23CC:D248:8901:8DF8:31D:D8B:3B99|2A00:23CC:D248:8901:8DF8:31D:D8B:3B99]] 09:09, 20 January 2026 (UTC)

I wish all those many people who apparently get notified about aurora forecasts, go outside and then AFTERWARDS post about it instead posted about it BEFORE… I keep seeing such posts when it's too late. :( [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 06:53, 20 January 2026 (UTC)

I'm not sure if this is a UK-specific phenomenon, so it may not be familiar to many of you, but those who ''do'' do this ("do do" – snigger), ''stop it''. I refer to banging on about how spectacular the aurora is but not mentioning that it couldn't be seen with the naked eye. If you can only see it by pointing your camera at it, that's not seeing it. That's not worthy of BBC journalists saying the aurora was visible, because it ''wasn't''. That's a cute trick that your phone can do to translate invisible parts of the spectrum into visible light. You don't post UV-detector shots of patterns that birds can see and say "Wow, conditions were perfect for making these patterns visible on this lizard!" If it's not visible, it's not visible. [[User:Yorkshire Pudding|Yorkshire Pudding]] ([[User talk:Yorkshire Pudding|talk]]) 10:55, 20 January 2026 (UTC)
:From my recollection of past info (that I won't repeat too specifically, as I kight be wrong and you probably don't want me saying it more exactly either way) you're also somewhere on the inner fringes of one of the main Yorkshire conurbations. Which means that your night-time views are blighted by 'cityshine' (as mine typically are, except it's more like a major regional town just over the hill) except upon the clearest of clear nights.
:I don't know what the urban equivalent is, but it's seemingly something like constant noctiluscent clouds (only illuminated by over-the-hill settlements, not the under-the-horizon Sun). Technically, I should get good aurora views, at this latitude, but have ''never'' seen (with my naked eye) anything that doesn't look like reflected light-pollution. Really clear skies and really good aurora seem to never have coincided, either it's the skies (lots of stars, or even shooting stars at the right times of year) or its an ambiguous glow that is probably anthropogenic. (Or, worse, it's so cloudy/etc, that I don't even get the neighbouring town's light.) [[Special:Contributions/82.132.239.241|82.132.239.241]] 16:25, 20 January 2026 (UTC)
I am sooo jealosu at Randall for er experiencien Aurora for hours. Aurora is in my top-3 of natural phenomeman that I want to see (have already seen a volcano erupt, have been in the path of a total eclipse twice - on overcast days) and yesterday, for about 10 minutes, I saw aurora for the first time. As in, I saw a glow that had a slightly greener glow than the light pollution would normally be, and I would not recognized it if my family who lives in darker territory didn't warn me. [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 19:16, 20 January 2026 (UTC)

Talk:3164: Metric Tip

2025-11-06T20:13:03Z

IIVQ:

!tsrif --'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User Talk:DollarStoreBa'al|Converse]] 21:08, 5 November 2025 (UTC)
:If you like to have fun with first comments, the place to do it is The Daily WTF comment pages. https://thedailywtf.com. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 21:25, 5 November 2025 (UTC)
Would have helped avoid the Mars Climate Orbiter [https://en.wikipedia.org/wiki/Mars_Climate_Orbiter] feature. [[User:SubtrEM|SubtrEM]] ([[User talk:SubtrEM|talk]]) 07:41, 6 November 2025 (UTC)

I am switching from metric to imperial: I am 1m34.5" --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 08:18, 6 November 2025 (UTC)
:You mean 1m2'26⅔cm. Or ''very nearly'' 2yd4cm½"..? [[Special:Contributions/82.132.244.220|82.132.244.220]] 12:08, 6 November 2025 (UTC)
::This actually is how I remember how much a Yard is. I am slightly over 2Yards, while being under 2m, so a Yard is a bit less than a meter. --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 15:36, 6 November 2025 (UTC)

Wait, what? ounce can be volume or weight? So you could give the density of a material in oz/oz? Imperial units are really weird... --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 08:21, 6 November 2025 (UTC)
:That would be highly nonstandard. Density is usually given in pennyweight/cubic barleycorn. [[Special:Contributions/209.188.63.33|209.188.63.33]] 08:52, 6 November 2025 (UTC)
:Not just that - it can be an areal density or a thickness, too: https://en.wikipedia.org/wiki/Ounce#Other_uses Strictly speaking, though, the imperial measure of volume is not an 'ounce', but a 'fluid ounce' - it's just that Americans have mangled the two together. [[Special:Contributions/82.13.184.33|82.13.184.33]] 10:21, 6 November 2025 (UTC)
: Weirdly enough, the active ingredient in something like medication is given in mg/oz (fluid ounce, presumably). That's just wrong.--[[User:Coconut Galaxy|Coconut Galaxy]] ([[User talk:Coconut Galaxy|talk]]) 10:35, 6 November 2025 (UTC)

"...are usually effectively one or other measurement of weight..." The grammar here seems wrong and confusing. [[Special:Contributions/2A00:23C5:FE1C:3701:54C4:F71B:724:CBE7|2A00:23C5:FE1C:3701:54C4:F71B:724:CBE7]] 10:30, 6 November 2025 (UTC)
: Better now? [[Special:Contributions/82.13.184.33|82.13.184.33]] 10:41, 6 November 2025 (UTC)

I'm so glad I live in a metric country now. Helping people fix their terminally naff cars in the 80s in the UK was a trauma - spanner/socket sizes, like 13/16ths and 10/12ths and 1/2 and... so the guy takes one, not right, asks for the next size up. Well, what size is that then? You mean the six and a quarter eighths, yes? 😪
Oh, and don't get me started on American recipes - you'll very quickly discover that US Imperial and British Imperial are not the same (and far too many American recipes measure stuff in "cups"). So, really, Imperial is complicated enough without translating half into metric! [[Special:Contributions/92.184.141.48|92.184.141.48]] 14:07, 6 November 2025 (UTC)
:Most recipes don't require the measurements to be very precise and you can get away with adding too few.or too much of an ingredient. A "cup" is just a large cup. So for a cup of wheat, just fill a cup or even looser, throw in what you estimate to be a cup.
:Certain bakeware and especially homemade pasta and cakes are picky about the relative quantities (especially of wheat and water), so beware! [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 20:13, 6 November 2025 (UTC)

I ran some numbers, and assuming 28.349523125 grams in an ounce and 16 ounces in a pound, "7 kg and 9 ounces" would be 7255.145708125 grams, assuming the "9 ounces" doesn't involve rounding, while 16 pounds would be 7257.47792 grams, which differs by only about 2.332211875 grams, or about 0.08 ounce - it's possible the weight is actually 16 pounds exactly, which feels like it makes "7 kg and 9 ounces" even worse than it already is. [[User:Conster|Conster]] ([[User talk:Conster|talk]]) 14:13, 6 November 2025 (UTC)
:Don't see why - it's easy to see the equivalence: 7 + 9 = 16. Simples! [[Special:Contributions/82.13.184.33|82.13.184.33]] 14:30, 6 November 2025 (UTC)
::This is an interesting coincidence - I made a [https://www.desmos.com/calculator/dqbzb8gfjf desmos] to find other places this happens. Unfortunately, looks like it's just in the 7kg, 9oz case (7257g) and integer multiples of it, up to 30kg. After 30kg, there are no more coincidences like this one. Maybe someone could mention this case in the trivia section. [[User:R128|R128]] ([[User talk:R128|talk]]) 16:04, 6 November 2025 (UTC)

Talk:3147: Hiking

2025-09-28T07:38:15Z

IIVQ:

But what if the drones run out of battery? --'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User_talk:DollarStoreBa'al|converse]] 18:54, 26 September 2025 (UTC)

:: "''what if the drones run out of battery?''" What If the Amazon/UPS delivery truck with the [['''What If? 2''']] book you ordered runs out of gas/diesel/juice? Maybe they attempt repeat delivery. Maybe a refund is posted in 7 to 10 business days.

I was going to write a transcript, but I can't figure out how to describe how this is supposed to be a time series in a single panel. I'll let someone else do it. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 19:22, 26 September 2025 (UTC)

:: "''how to describe how this is supposed to be a time series in a single panel''" It is three moments in time, superimposed. "Slide is delivered", "Hikers slide", "Slide is removed". [[User:PRR|PRR]] ([[User talk:PRR|talk]]) 22:35, 26 September 2025 (UTC)

::: Four moments in time actually. You forgot "Hikers orders slide". [[Special:Contributions/2001:9B1:40D0:C300:102B:825:C539:3F33|2001:9B1:40D0:C300:102B:825:C539:3F33]] 01:06, 27 September 2025 (UTC)

I'd also like an on-demand ski lift for upwards segments [[Special:Contributions/73.222.207.213|73.222.207.213]] 23:54, 26 September 2025 (UTC)

I feel like this comic deserves a parody of "Jack and Jill went up a hill". [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 19:37, 26 September 2025 (UTC)

This is how I learnt there were waterslides. [[Special:Contributions/64.114.211.21|64.114.211.21]] 08:59, 27 September 2025 (UTC)
: #todayyearsold [[User:RadiantRainwing|RadiantRainwing]] ([[User talk:RadiantRainwing|talk]]) 15:53, 27 September 2025 (UTC)

I'm not sure this would improve the hiking experience for me; not because I have anything against waterslides, but because the downhills are a valuable rest period in between unpleasant ascents. If it were over in a moment I'd still be exhausted at the bottom of the next rise. [[Special:Contributions/79.77.240.136|79.77.240.136]] 19:18, 27 September 2025 (UTC)
:And probably thoroughly wet, to boot. [[Special:Contributions/92.17.62.87|92.17.62.87]] 00:05, 28 September 2025 (UTC)
::I prefer ascents, and having bad knees don't like descents. Last summer I did a 1400m ascent to a mountaintop, with only 250m of descent. Lovely! On-demnd slides (they may be dry ones) would make the experience even better for me! [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 07:38, 28 September 2025 (UTC)

This raises the possibility of drone-delivered escalators for ascending Mount Everest. [[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]]) 03:38, 28 September 2025 (UTC)

Talk:3125: Snake-in-the-Box Problem

2025-08-09T06:01:35Z

IIVQ: wrong example

The math problem in question is https://oeis.org/A099155 [[User:Mei|Mei]] ([[User talk:Mei|talk]]) 21:57, 6 August 2025 (UTC)

why is d>8 unsolved? stevethenoob 21:59, 6 August 2025 (UTC)
:Computational power, I guess, although I'm going to go out on a limb and predict that for N=9 snake=196. [[Special:Contributions/94.73.52.245|94.73.52.245]] 23:18, 6 August 2025 (UTC)
:It's not that hard to imagine: if you were to try a brute force search it would take time that's exponential in the path length, which itself is exponential in d. There are evidently methods to do it slightly better, but not enough to make solving d=9 feasible yet. [[User:Zmatt|Zmatt]] ([[User talk:Zmatt|talk]]) 10:03, 7 August 2025 (UTC)
:To give an impression of the rate at which these get solved: d=6 was solved in 1988, d=7 in 1996, d=8 in 2014. [[User:Zmatt|Zmatt]] ([[User talk:Zmatt|talk]]) 10:32, 7 August 2025 (UTC)

I would argue that computer science has one as well with the China room problem. [[User:Ctinsman|Ctinsman]] ([[User talk:Ctinsman|talk]]) 22:14, 6 August 2025 (UTC)

: Humans aren't cute animals (mostly), so I propose a variant of the problem called the Chinese Red Panda Room [[Special:Contributions/177.12.49.23|177.12.49.23]] 22:38, 6 August 2025 (UTC)

Interesting. Just a few days ago I was investigating a very similar idea (looking at a path that transitioned between adjacent ''faces'' of a polyhedron, which was effectively going from vertex to connected vertex upon that chosen polyhedron's ''dual''), but for the opposite reason, i.e. looking for the paths that actually maximised proximity (along the path) between neighbouring faces (upon the polyhedra), so that it actually minimised the search back/forth along the path-chain to establish what value the adjacent polyhedron faces (beyond the ones automatically at ±1 positions on the chain) inherited.
 As to solving this one (basically disallowing visiting of any nodes adjacent to prior visits ''other'' than the single one that the +1 position of the chain has to first go to), I've got a basic idea of how I'd N-dimensionally space-search the possible routes (after all, visiting any given node at {0,1} value for dimensions [a, b, c, ...] rules out now visiting all of [!a, b, c, ...], [a, !b, c, ...], [a, b, !c, ...], etc, ''except'' whichever one of these was chosen for the next step of onward travel), for valid foldings across the appropriate N-polytype cuboidal analogue. Though I suspect that the exponental (or greater!) growth in the potential search-trees you'd use would be the sticking point. No point in setting off an exhaustive algorithm if it seemed likely to take three years to check just 1% of possibilities, and no doubt more dedicated analysis than my own brute-forcing method has already hit other problems in trying a more nuanced extrapolation between each level of added dimensionality, which is where the unsolved nature of this starts to bite.
 But also think it'd be far more interesting to investigate the possibilities in the N>3-Dimensional extensions of non-cubic platonic solids, like the {{w|600-cell}} and beyond, and establish what allowable lengths of traversal ''they'' would allow, under similar stipulations.
 Great! I love getting things like this to think about. If I can spare the time needed... [[Special:Contributions/82.132.245.59|82.132.245.59]] 22:22, 6 August 2025 (UTC)
: I think you've been nerd-sniped. [[Special:Contributions/177.12.49.23|177.12.49.23]] 22:42, 6 August 2025 (UTC)
::So far, I've personally got as far as:
::*For any given number of dimensions, N, there are always N adjacent points (point, zero dimensions, zero neighbours; line, one dimension, one neighbour; square, two dimension, two neighbours, etc).
::*In total, there are 2N points (0d=1, 1d=2, 2d=4, etc)
::*A maximum possible length, L, has a ''lower'' lower limit of starting at any particular vortex and only taking directions that are perpendicular to all prior directions (for a cube, only go by x, y and z directions once), and this would be eaual to N.
::*But that's overly-lazy, as you're ruling out (as you gain enough dimensions) revisiting a dimensional plane, even though you're allowed to revisit a point on that plane that's shifted by at least ''two'' other dimensions of offset. e.g. the top right of a cube's facing face when you started at the bottom left of it (went 'deep' to the rear face, took two steps from the rear-lower-left to rear-upper-right then back).
::*For the first step, you have N choices from your starting position. You take one and cannot later visit any of the ones you did not choose to go to. For the second step onwards, you have N-1 basic choices (every direction but backwards to the prior step) and should choose one and rule out ever visiting the rest.
::*This gives a new (at least for N>2) lower limit to L whereby the sum of starting, taken and not-taken nodes that you count can be added to by new steps until you would end up with have a total greater than 2N. (Line: start on one (of two), choice of one (taken), two points 'marked', only two points possible; Square: start on one (of four), two choices, take one, reserve one, three points 'marked', still the fourth point available for L=2, but then five points would be marked (the untaken-from-start being the only non-backwards choice) so can't go further.
::*But this is also wasteful as (in increasingly higher dimensions) there's nothing to stop an unvisited neighbour of a past step from being a(n enforced) unvisited neighbour from a later step, as you 'choose' to go only to a valid further point. So clever "near-neighbour" backtracking can reduce the number of ''freshly'' eaten-up points and thus maintain more future points for more steps.
::**Noting that past-step no-go-neighbours that can possibly 'fold into' the current-step's not-going-neighbours list only become such after ''at least'' two intervening steps (for 'square-based' hypercubic domains, whereas triangle-based hypernets (e.g. tetra-, octa- and icosohedrons, in 3-space) happen after just one step, and pentagon-based ones (dodecahedrons in 3-space) can't take advantage of this in less than three. (This seems to share some of the mathematics with the 'classical' rabbit-population problem, whereby new offspring only become viable breeding population after a step or two since their generation.)
::*Optimally, in fact, you should aim to double-back in such a way as leave yourself with ''all but one'' onward neighbour unavailable (thus only eating up potential points at a rate of one per step, at that point).
::*Heading vaguely back 'towards' past snake-lengths, in higher-dimensional hypernets, seems like the best(/longest) space-filling strategy. It's a bit like coil-built pottery, but with more undulations (and dimensions) to it. But with care to make sure you don't burrow yourself into a dead-end with ''no'' viable onward choices while still having maybe half of the potential visitable/neighbourable points untouched, or avoiding filling 'voids' to guaranteeing accessing a majority of the potential future visits, but unwisely not exploiting all the phase-space of vertices optimally.
::**I can mentally visualise doing this successfully in 3-, 4- and 5-cube situations, elegantly enough (it's like , but N>=6 versions get increasingly hard to do in my head with certainty. After I've slept on it, I might have to break out the pencil and paper.
::So, yeah, I've set a lower-limit to L, for various Ns, and can construct a ''possible'' upper-limit to L, but I haven't even checked these L(N)s vs. the values stated in the comic. Or what progress (and more advanced logical reasoning) has already been made in the field. I suspect I'm just reinventing the (hyper-)wheel, of course, rather than have the key to the problem that everyone else had failed to spot, but that's not the point. If I get even half way close to what the 'professionals' in this field have managed, I'll be smug and self-satisfied enough for myself. And, anyway, I've explained myself enough tolet any ''other'' similarly-minded nerd the ability to get at least as far as I've got with this problem. Which is as good an outcome, as far as I'm concerned, as getting this done entirely on my own. [[Special:Contributions/82.132.244.41|82.132.244.41]] 00:33, 7 August 2025 (UTC)
::: I'm still having trouble getting hold of long enough snakes. [[Special:Contributions/82.13.184.33|82.13.184.33]] 08:31, 7 August 2025 (UTC)
::: I've got the 50 length one for 7D, lets see if I can go further :) --[[User:Darth Vader|Darth Vader]] ([[User talk:Darth Vader|talk]]) 13:25, 7 August 2025 (UTC)

Psychology is way ahead of y'all, they've been putting actual mice in weird boxes for ''decades''. [[Special:Contributions/177.12.49.23|177.12.49.23]] 22:45, 6 August 2025 (UTC)
:Psychology might have been putting animals in boxes for decades, but zoology has been doing it for centuries! [[Special:Contributions/97.118.209.207|97.118.209.207]] 00:36, 7 August 2025 (UTC)
::Gastronomy has been doing it for as long as people have been storing food. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 03:41, 7 August 2025 (UTC)
:: https://scratch.mit.edu/projects/284912743/--[[Special:Contributions/2001:4450:8178:2200:D1C2:8DED:F6FE:E93C|2001:4450:8178:2200:D1C2:8DED:F6FE:E93C]] 04:01, 7 August 2025 (UTC)
:::That link doesn't work. When I remove the -- at the end it goes to some kind of math game. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 15:58, 7 August 2025 (UTC)

Reading (just) the [comments] of the underlying research suggests that 98 is the longest found snake. Perhaps that means a longer one has not been explicitly eliminated (making 8 also not solved to some extent) [[Special:Contributions/2A02:A45B:8867:0:BED8:F2BA:838E:765|2A02:A45B:8867:0:BED8:F2BA:838E:765]] 22:52, 6 August 2025 (UTC)
:a(8)=98 was proven by: Östergård, P.R.J., Pettersson, V.H. Exhaustive Search for Snake-in-the-Box Codes. Graphs and Combinatorics 31, 1019–1028 (2015). https://doi.org/10.1007/s00373-014-1423-3
:[[User:Zmatt|Zmatt]] ([[User talk:Zmatt|talk]]) 09:46, 7 August 2025 (UTC)

I suppose Randall doesn't consider [[beetles]] cute, or else [https://en.wikipedia.org/wiki/Philosophical_Investigations#Wittgenstein's_beetle philosophy of language] would be included. [[Special:Contributions/137.25.230.78|137.25.230.78]] 23:15, 6 August 2025 (UTC)
: that's a great example [[Special:Contributions/177.12.49.23|177.12.49.23]] 01:46, 7 August 2025 (UTC)

In simultaneous interpreting, humans are the cute animal in the box. {{unsigned|DrInterpreter|07:35, 7 August 2025 (UTC)}}

I don't believe an explanation of the Schrödinger's cat thought experiment is necessary to understand this comic. However, people keep editing the page to include an incorrect description of the experiment, by saying the cat is either dead or alive and you don't know which until you open the box. That's wrong and misses the point of quantum superposition. The cat is not dead or alive, it's literally both, due to its fate being linked to radioactive decay, a process that is subject to quantum superposition. Since it does seem inevitable that someone will keep editing this to add an explanation, I've added one myself. [[Special:Contributions/177.12.49.23|177.12.49.23]] 10:29, 7 August 2025 (UTC)

The link in the mail newsletter lead to "http://https//xkcd.com/3125/", not sure if that's worth documenting here. [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 13:07, 7 August 2025 (UTC)

Not a chemistry grad student, but is it possible that Randall intended "lure campus squirrels into laundry hampers in the hope that it ''sparks'' inspiration" as a humorous method of investigating the triboelectric effect? [[Special:Contributions/129.222.87.163|129.222.87.163]] 13:25, 7 August 2025 (UTC)

n=2: Snakes on a plane. [[Special:Contributions/64.201.132.210|64.201.132.210]] 16:47, 7 August 2025 (UTC)

the comic number 3125 is 5^5 [[Special:Contributions/96.77.127.105|96.77.127.105]] 18:26, 7 August 2025 (UTC)

Conclusion: we better have no snakes in the world {{unsigned ip|102.117.215.0|08:21, 8 August 2025 (UTC)}}

In the middle of the tree "wrong" examples, is the vertex leading from head to tail also a "wrong" vertex and should be coloured red? [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 06:01, 9 August 2025 (UTC)

Talk:3124: Grounded

2025-08-05T07:24:59Z

IIVQ: + add train service

I don't get the joke at all
The idea is to simply drive the plane on the ground to the destination.
Ok, should we mention this is because they mention the taxing speed
:Taxiing speed, not taxing speed. The pilots are not mulling how quickly they can file their 1040s. [[Special:Contributions/136.226.19.75|136.226.19.75]] 21:23, 4 August 2025 (UTC)

Even if a plane could taxi at around 60 MPH (car highway speed), 2 hours is only 120 miles. Not many flights on commercial jets are so short. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 21:37, 4 August 2025 (UTC)

I would hope that Randall was aware of John Finnemore's radio sitcom "Cabin Pressure", as a very compatible sense of intelligent humour (with the 'u', 'cos British!). Though maybe not ('cos British radio, might be too fringe a taste), and so the fact that one of the episodes has a somewhat similar plotpoint to it (not saying which, and how, as anyone who'd like to start listening might just appreciate not knowing "this is the one where..." before it happens) probably isn't worth fully analysing (with an 's', 'cos British! :p ) in the explanation. But just mentioning it here, in passing, given that it reminds me of it.
 ...also, as well as bridge heights, I hope they have a good idea about carriageway widths, for the undercarriage, and road furniture (like lampposts/roadsigns, and telegraph/powerline poles) ''plus'' structures (buildings, and bridge-spans, and even groundworks like cuttings through an overlying grade) , for the wings. Though maybe a flight(/taxi) between two places in a relatively undeveloped landscape, having just wide surfaced roads and nothing more immediately prominent than relatively sliceable giant saguaro cactii. Which I can imagine (for the sake of the joke) in the US, but would probably rule out absolutely every possible road route here in the Uk, for any aircraft bigger than a microlight. (Or an autogyro, with the rotors tied front/back, or doing a Mad Max 2 because of prior damage, but that was also in feature-sparse desert...) [[Special:Contributions/82.132.244.251|82.132.244.251]] 22:22, 4 August 2025 (UTC)

American Airlines is already making their flights from Chicago O'Hare and Philadelphia do this! On busses. Yes, busses at the airport boarding gates. They're calling it American [https://www.aa.com/i18n/travel-info/experience/landline.jsp Landline]. [[User:Aaron Liu|Aaron Liu]] ([[User talk:Aaron Liu|talk]]) 22:48, 4 August 2025 (UTC)
:KLM does this as well, with [https://www.klm.nl/information/ticket-services/air-rail trains] between Brussels (ZYR) and Antwerp (ZYR) and Schiphol Airport (AMS). However, it is a "normal" Eurostar (formerly Thalys) train journey on your flight ticket: you check in your luggage between the train and flight and you're mixed with "normal" train passengers. Annoyingly, you can not count this trip towards your Eurostar miles. There used to be a train service from Brussels Central to Zaventem Airport where you checked in at Brussels Central. [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 07:24, 5 August 2025 (UTC)

I'm reminded of Douglas Adams's comments on the l2th radio episode of HHGttG, about how delays in getting a flight off the ground (for reasons that were almost entirely pointless) made it slower than making the trip by train would have been, in addition to the plane travel being less comfortable and less convenient. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 23:01, 4 August 2025 (UTC)

Talk:3075: Anachronym Challenge

2025-04-11T19:30:12Z

IIVQ: Duck tape

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)

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)

:: 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)

: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)

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

Talk:3048: Suspension Bridge

2025-02-08T12:58:35Z

IIVQ:

What if a car doing one of the fun jumps lands on a car that didn't do a fun jump? Should we mandate that every car does a fun jump for this reason (and yay, fun jump!)? [[Special:Contributions/198.41.227.115|198.41.227.115]] 22:08, 7 February 2025 (UTC)
: Radar speed management, vehicles are only let on the bridge if their expected land point is between the vehicles around them. [[Special:Contributions/172.68.55.80|172.68.55.80]] 22:48, 7 February 2025 (UTC)
:Carrot/stick question. If they do a jump, they get their toll refunded on the far side of the bridge. Maybe give them double refund if they do a flip. [[Special:Contributions/172.69.246.135|172.69.246.135]] 04:07, 8 February 2025 (UTC)

Do suspension bridges still work when built this way? Those pilings look much easier to sway to me. Maybe they are just buried a little more securely. [[Special:Contributions/172.68.55.80|172.68.55.80]] 22:48, 7 February 2025 (UTC)
:Yep! With "classic" suspension bridges (like the Golden Gate Bridge), there is no fixed connection between the deck and the towers. With differring loads and temperatures the deck can move up and down about 30cm at tower level (and almost 2 netres at midpoint). Some modern bridges do ise a fixed connection or hinge between deck and tower. [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 12:58, 8 February 2025 (UTC)

This looks a lot like a {{w|stressed ribbon bridge}}. [[Special:Contributions/172.69.64.132|172.69.64.132]] 22:59, 7 February 2025 (UTC)

This ''exact'' proposal, the [https://poly-bridge-2.fandom.com/wiki/Dangling_Road 'dangling road'], is actually The Meta in Poly Bridge 2. Poly Bridge 3 tried to tweak the numbers to make this strat less effective, but a variant of it continues to persist to this day. (This probably goes in the trivia section, because it seems like Randall came to this concept from first principles.) [[Special:Contributions/172.71.151.65|172.71.151.65]] 01:07, 8 February 2025 (UTC)

It's funny to me, there's a level in Jak II for the PS2 that's literally just this idea: for whatever reason the city's central palace is held up by five suspension bridge-esque wires, and one level has you crawling along wire #4 to get inside the palace (the catch? The wires are covered in security robots) [[Special:Contributions/172.71.159.7|172.71.159.7]] 01:54, 8 February 2025 (UTC)

I like the fact that vehicles are clearly on flexible cables, not some rigid material formed into a catenary shape. There's a truck between the two towers that is visibly depressing the cable it's riding. [[User:Nitpicking|Nitpicking]] ([[User talk:Nitpicking|talk]]) 03:57, 8 February 2025 (UTC)
:Happy happy joy joy. {{w|Tacoma_Narrows_Bridge_(1940)|No dogs allowed on this bridge}}. [[Special:Contributions/162.158.42.87|162.158.42.87]] 04:35, 8 February 2025 (UTC)

Talk:2928: Software Testing Day

2024-05-05T06:47:20Z

IIVQ:

What holiday are they referring to? In the UK we will have a long weekend due to the Early May Bank Holiday. But May Day isn't a "thing" in the USA, is it? Or should we just assume this is set in Britain? [[User:Zeimusu|Zeimusu]] ([[User talk:Zeimusu|talk]]) 13:45, 4 May 2024 (UTC)
:Well, that's refering to the official STD(!) set to be on January 0th (+24hr+12hr), so I don't think it's a topical scene.
:It looks like our Leftpondian friends have official ''nationwide'' 'holidays' on: New Year's Day (1/Jan), Martin Luther King, Jr, Day. (3rd Monday in January), Inauguration Day (20/Jan, every 4 years), Presidents Day (3rd Monday in February), Memorial Day (last Monday in May), Juneteenth (19/Jun), Independence Day (4/Jul), Labor Day (1st Monday in September), Columbus Day (2nd Monday in October), Veterans Day (11/Nov), Thanksgiving Day (4th Thursday in November), Christmas Day (25/Dec). And then there'll be additional state/more local days, no doubt. (And, because of labo(u)r laws, or insufficient ones, I'm given to believe that might be more of an inconvenience/inapplicability to quite a lot of workers.)
:But this seems to be a highly specific 'QA'/software-testers' tradition, either within a particular company or across ''all'' such professionals. At least within the xkcd universe, which might have all kinds of other strangenesses to it that we're only seeing the vaguest outline of through these comics. [[Special:Contributions/172.71.242.188|172.71.242.188]] 17:37, 4 May 2024 (UTC)
:"May Day isn't a ''thing'' in the USA, is it?" -- Personal holiday. At my house (Maine USA) a maypole is customary (if snow allows). When I was very young (1950s California) we celebrated in kindergarten, but I think religious bigots cancelled that. --[[User:PRR|PRR]] ([[User talk:PRR|talk]]) 19:55, 4 May 2024 (UTC)

I exapnded the "hours on/after midnight" section a bit. Nearly put down that the 'official' day at times used to start at 6:00AM (or dawn, depending upon whether some form of consistent timekeeping or just practical astronomical cycles dominated), so that the post-midnight activities of people (very unusual, for most, but would include liturgical ceremonies) also belonged to the prior daylight cycle. And that "noon" was the "ninth hour" of the day (~3PM, give or take), before clock changes and civil practice moved it to midday. - But this really is beyond the scope of the above explanation, so mentioning it here instead. [[Special:Contributions/162.158.38.91|162.158.38.91]] 18:09, 4 May 2024 (UTC)
:I work in public transport, where we use times up to 32:00 but ignore daylight saving time on the night it switches (so on that night, 30:00 might be 5am or 7am in the sunday morning). Also, we have different notations for time as a specific point in the day (7:10) or as a duration (7h10). [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 06:47, 5 May 2024 (UTC)

Talk:130: Julia Stiles

2023-12-23T23:14:21Z

IIVQ:

Randall is right once again. [[User:Netherin5|Netherin5]] ([[User talk:Netherin5|talk]]) 13:30, 5 March 2019 (UTC)

I can't beleive it took over 16 years for this factoid about Stiles to be [https://en.wikipedia.org/w/index.php?title=Julia_Stiles&diff=1186988046&oldid=1186323176 included on her Wikipedia page]. [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 23:14, 23 December 2023 (UTC)

2853: Redshift

2023-11-11T10:13:31Z

IIVQ: +link to redshift

{{comic
| number = 2853
| date = November 10, 2023
| title = Redshift
| image = redshift_2x.png
| imagesize = 223x264px
| noexpand = true
| titletext = So do you have any plans for z=-0.000000000000045?
}}

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

In {{w|cosmology}}, {{w|redshift}} refers to the way that light from distant objects in the universe is stretched out, making it appear more red than it would otherwise. This occurs because the universe is expanding, and as a result, light waves are stretched as they travel through space. The {{w|Redshift#Redshift formulae|"z" value}} is a dimensionless measure of the redshift. A higher "z" value, or redshift, corresponds to earlier times in the history of the universe. This is because as the universe expands, light from distant galaxies is stretched to longer, redder wavelengths as it travels towards us. The further away a galaxy is, the longer its light has been traveling, and thus the more the universe has expanded since that light began its journey. Therefore, a higher redshift indicates a galaxy that is further away and that the light we see from it left when the universe was younger. Conversely, a lower redshift means the light has traveled a shorter distance and time, indicating a more recent epoch in the history of the universe. Negative values of "z" indicate a blueshift, which indicate objects that are approaching the observer, generally used in cosmological work to calculate rotation speeds of nearby objects.

The joke here is that Cueball is asking Ponytail when she became interested in cosmology, and instead of giving a time like "in college" or "as a kid," she responds with a redshift value "z=0.00000000038." This very small number is due to a highly recent event compared to the start of the universe, within the cosmologist's lifetime. The negative blueshift question in the title text is a playful way of asking about a future event, as it is approaching the speakers. Specifically it is a closer event to present day to when the cosmologist became interested in her field of study as the absolute value of z is 10^4 smaller and indicates a closer albeit future event.

Assuming a particular cosmology, and in particular values for the Hubble constant (H₀) and the curvature of the universe, it is possible to specify a particular look-back time. For z = 0.00000000038, and a flat Lambda CDM cosmology, with H₀ = 69.32 km / (Mpc s), a value of Ω₀ of 0.2865, a cosmic background temperature of 2.725 K, the look-back time is of around 1960 days, or five and a half years, which could suggest that Ponytail started studying cosmology as part of a Ph.D. program.

Negative numbers of z would indicate a "look-forward" time, or a time in the future, and the same model indicates that z = -0.000000000000045 corresponds to about 5.5 hours in the future.

The use of non-standard units of measurement has also been seen in [[2707: Astronomy Numbers]], with (higher) redshift values previously visited as a part of [[2764: Cosmological Nostalgia Content]].

Redshift an blueshift have been mentioned before in [[1852: Election Map]]

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[Ponytail and Cueball are sitting at a table, eating dinner. The table has two cups of wine and a different dish for each person.]
:Cueball: So, when did you first get interested in early universe cosmology?
:Ponytail: Sometime around z=0.00000000038.

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

Talk:2841: Sign Combo

2023-10-14T09:06:17Z

IIVQ: Added comments

Theoretically you can get around this limitation by turning off the road before the sign and doing whatever maneuvers you need to out in the wide open area to the right or left of the road. It's not a U-turn if you're not on the road, and you didn't enter a restricted part of a road either, and didn't stop on the road. After which you calmly make a turn onto the road when traffic is clear. [[Special:Contributions/108.162.245.207|108.162.245.207]] 02:34, 14 October 2023 (UTC)
:I'm pretty sure swerving off of a road is also illegal. [[User:SteveTheNoob|SteveTheNoob]] ([[User talk:SteveTheNoob|talk]]) 04:41, 14 October 2023 (UTC)
:: You can always just pull over - if a cop asks, just tell him you were lost or tired or had to take a phone call. And then take the opportunity to ask about the bloody sign! Anonymous 07:30, 14 October 2023 (UTC)
So does making a three point turn count as a u-turn? [[Special:Contributions/172.69.58.66|172.69.58.66]] 02:40, 14 October 2023 (UTC)
Wouldn't putting it in reverse stop you briefly as you switched from forward acceleration to reverse?
:Yes, this is also an example of Rolle's theorem as seen in [[2042]]. [[User:SteveTheNoob|SteveTheNoob]] ([[User talk:SteveTheNoob|talk]]) 04:56, 14 October 2023 (UTC)

[https://en.wikipedia.org/wiki/Immelmann_turn Immelmann!] [https://en.wikipedia.org/wiki/Stall_turn Hammerhead!] [https://en.wikipedia.org/wiki/Cuban_eight Half Cuban Eight!] [[User:Jordan Brown|Jordan Brown]] ([[User talk:Jordan Brown|talk]]) 03:21, 14 October 2023 (UTC)

You could obey the title text if it was 45 miles per hour and 65 meters per hour, respectively. [[Special:Contributions/162.158.90.96|162.158.90.96]] 04:04, 14 October 2023 (UTC)

Take notice of the road markings too. At least here in Europe double white lines are not to be crossed. And they go past the point of the sign.--[[User:Henke37|Henke37]] ([[User talk:Henke37|talk]]) 07:06, 14 October 2023 (UTC)

:Double lines are also "do not cross" in America. And I think in this case it's supposed to be yellow, the dashed-and-solid combo indicates a one-sided passing zone into a lane with on-coming traffic, and double lines in general are only use to separate anti-parallel lanes of traffic, both of which use yellow. "Solid double white lines" do exist, but are only used in very specific cases. Near me, there's a very congested exit, and the solid double whites are used to indicate "no really, you should have switched lanes ages ago, it's too late now!", but since it isn't a Jersey barrier or a line of rods or even a full on median, nobody actually follows the rule. Anonymous 07:30, 14 October 2023 (UTC)

:: BTW in Europe, yellow lines are reserved for temporary use, and then take precedence over any existing white lines. Makes lots of sense, because there are so many construction sites here. (And the yellow lines are actually just adhesive tape.) --[[Special:Contributions/162.158.87.102|162.158.87.102]] 08:28, 14 October 2023 (UTC)

And I completely forgot why I was posting in the first place: I think there's good reason to create a full "traffic signs" or "road signs" tag, not just "traffic lights". I know there's a page with a very complicated "this is what the road ahead looks like" sign that just says "good luck", and of course there's "Next Five Miles" and "Ahead Stop". Thoughts? Anonymous 07:58, 14 October 2023 (UTC)

More thoughts: if you must not make a U-turn to the left, you should do it to the right.
And then return on the same lane, because of the double line.
And finally, the sign itself may be valid and not contradicting itself; it is your fault if you got on this road. ;) --[[Special:Contributions/162.158.87.102|162.158.87.102]] 08:28, 14 October 2023 (UTC)

In the Netherlands, the message on signs are only valid behind the sign (with the exception of the "precedence way" (voorrangsweg), where outside of built-up areas, the signs are after a junction (though technically... way before the ''next'' junction) , so a driver stopping /u-turning here wouldn't be violating anything except the double white lines.
Also, stopping out of necessity (e.g. the car in front is also stopped) is ''never'' illegal. [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 09:06, 14 October 2023 (UTC)

Talk:2799: Frankenstein Claim Permutations

2023-07-08T12:49:18Z

IIVQ:

Expanding on [[1589: Frankenstein]], clearly. [[User:Trimeta|Trimeta]] ([[User talk:Trimeta|talk]]) 03:17, 8 July 2023 (UTC)

The last permutation is a garden path sentence that starts off talking about the TV show ''Doctor Who''. [[Special:Contributions/162.158.62.175|162.158.62.175]] 03:21, 8 July 2023 (UTC)

:"The [unnamed] ''Doctor Who'' [Dr. Who might be a function title like Q and M in the James Bond Franchises] [whom] creates ''Mary Shelly'' in ''Frankenstein'''s novel". Does this mean Frankenstein is the original creator of the Dr. Who universe? [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 12:49, 8 July 2023 (UTC)

:The title text seems straightforward enough to me, anyways: "No, the doctor (who creates Mary Shelley (in Frankenstein's novel)) doesn't have a name." Not much of a garden path sentence at all. [[Special:Contributions/172.70.34.187|172.70.34.187]] 03:43, 8 July 2023 (UTC)

The best part of this comic is that every last one of these claims is wrong. In the original novel, Victor Frankenstein is an obsessive undergrad, notably with no medical degree. [[Special:Contributions/172.71.151.35|172.71.151.35]] 03:54, 8 July 2023 (UTC)

You could argue rather that Walton and Saville were the names of the authors. The monster Shelly created was named Victor von Frankenstein. The tragic hero was unnamed. [[User:EebstertheGreat|EebstertheGreat]] ([[User talk:EebstertheGreat|talk]]) 04:02, 8 July 2023 (UTC)

Pretty sure that Randall saw the image of the misprinted book where the title is Mary Shelly, and the author is Frankenstein. [[Special:Contributions/172.71.151.35|172.71.151.35]] 06:54, 8 July 2023 (UTC)

:See here: https://twitter.com/MedCrisis/status/1511644464544104452?t=B23sq4iftXXWPdSKYCqOyg&s=19
[[User:Svízel přítula|Svízel přítula]] ([[User talk:Svízel přítula|talk]]) 08:46, 8 July 2023 (UTC)

No, Frankenstein is the name of the novel created by the monster (according to her sleepless readers) Mary Shelley. [[Special:Contributions/172.68.34.38|172.68.34.38]] 08:12, 8 July 2023 (UTC)

The second permutation could be read in the "the scientist who abandoned his creation is the ''real'' monster" sense. --[[Special:Contributions/172.69.62.28|172.69.62.28]] 11:19, 8 July 2023 (UTC)

The Doctor joined the Who and married Shelley, the inventor of Monster energy drinks. [[Special:Contributions/108.162.237.102|108.162.237.102]] 12:28, 8 July 2023 (UTC)

Talk:2790: Heat Pump

2023-06-19T05:04:02Z

IIVQ:

woah! an xkcd with color what was the last one with color? (im kinda new to xkcd) [[Special:Contributions/172.71.122.48|172.71.122.48]] 21:17, 16 June 2023 (UTC)Erfaniom
:I guess the last one with a lot of color was [[2750]]. More at [[:Category:Comics with color]]. [[Special:Contributions/162.158.167.11|162.158.167.11]] 17:29, 17 June 2023 (UTC)

I suppose color was needed to show the air temperature. Odd, though, that in summer (in the northern hemisphere), the character is trying to increase the indoor temperature. [[User:Davidhbrown|Davidhbrown]] ([[User talk:Davidhbrown|talk]]) 21:27, 16 June 2023 (UTC)
:He's not. He's moving the hot air from inside to the cooler outside. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 22:18, 16 June 2023 (UTC)
:::he's actually heating it, the comic is set in winter. It's a reference to the discussion about regulating heating systems in Germany. I added something about that in the explanation, but I don't think I made the citation right (I'm not to editing wikis) [[User:Marta]] ([[User talk:Marta|talk]]) 05:25, 17 June 2023 (UTC)
:::::The citation does not appear to strongly relate to the comic to me. I might be curious if Randall had a lot of comics queued and actually published a winter one in the summer, for example. [[Special:Contributions/172.69.59.112|172.69.59.112]] 00:19, 18 June 2023 (UTC)
::::::I agree, I think the Germany thing might probably be coincidental. Randall lives in North-Eastern America. It's unlikely, though quite possible, he was inspired enough by such foreign matters to base a comic on it. Still, you never know from whence inspiration may strike, in which case he published when he thought of it instead of when it'd be relevant... [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 04:40, 18 June 2023 (UTC)
:::::::News of this had not otherwise reached me over the German Ocean (i.e. North Sea), never mind where Randall is, way over the Pond (i.e. Atlantic). Not saying it wasn't a prominant bit of news, in his media feeds, but usually the problem is that something 'popularly heard about' state-side confuzzles anyone in (say) Europe/ex-Europe when used as inspiration for a comic without enough setup to it. Now, ''if'' say Penn./Mass. state legislature were being similarly proactive on such matters, I'd say it might be the cue for this. Otherwise, it might be better as an afterthough/Trivia instead of the lead-on paragraph. But I also don't know enough to know that it ''isn't'' worthy of such prominance, so this is just my thoughts, leaving others to alter it if they so wish... Anybody can do it, after all... [[Special:Contributions/162.158.74.96|162.158.74.96]] 09:55, 18 June 2023 (UTC)
::::Nearly right. Simple "insert URL" as a 'number' is single []s, or [<url><space>some text] to have it given linking text (preferable).
::::Plus you seem to have not used the four tildes, i.e. <code><nowiki>~~~~</nowiki></code> to sign the above comment (made it correct, for you), plus confusingly replied ''before'' another reply (so I indented you a bit more, as well as it now having that timestamp to make precedence clear).
::::But these are all things you'll pick up, I'm sure, if you're going to be getting [used] to wikis... Welcome! [[Special:Contributions/172.71.178.139|172.71.178.139]] 05:35, 17 June 2023 (UTC)
::I actully think he's warming the inside, already warmer than outside, by effectively (and literally!) squeezing the heat out of the cooler outdoors air.
::By compressing the cool outdoor air, he increases its temperature (p1v1/t1=p2v2/t2) to warmer than the warm indoor air, creating a squeezebox->room flow of heat energy, then returns to the outside before decompressing and lowering the temperature in his squeezebox below the cool-air temperature in order to create an outdoors->squeezebox flow of energy and repeat. (The comic has the cycle start at roughly half-way through that, and wraps round, but the heat-to-room seemed the most obvious starting place here.)
::Right now, I'd not wish to heat my indoors up (even at 11:30pm, like now), so I agree that it's a funny time of year show heat-adding (rather than heat removing), but it definitely is that. [[Special:Contributions/172.70.86.154|172.70.86.154]] 22:31, 16 June 2023 (UTC)
:::Assumption(?): Indoors is on the LHS and higher, outdoors on the RHS and lower, door opens outwards and steps down to "outside". He COULD instead be cooling a basement apartment with a door that opens inwards (like mine)... however he seems to make a noticeable difference to the red, not the blue, so... probably not. :-/ [[Special:Contributions/172.70.34.160|172.70.34.160]] 02:36, 17 June 2023 (UTC)
::: Since panel 3 shows it at its widest and bluest with "Release", I understand that to mean he's releasing the heat outside from inside - like an A/C does. The weird thing is then showing the reddest/smallest with "Radiate", that word means "make and release heat" to me. The thing is, past experience tells me Randall lives in roughly the same part of the world as me, same climate. That he's in the northern states (like, within a day's drive of the Canadian border), and the Eastern time zone, and it's summer for us. Only heat pumping people should want is pumping heat OUT of the house... [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 04:16, 18 June 2023 (UTC)
::::Releasing the spring. At that point, there's the same amount of heat within the device, but it's spread out more so that the temperature is lower (than it was, but also than the surrounding air, which is also ''negligibly'' compressed outwards of course). NB, it does ''not'' draw air into it.
::::Now he has a cool device, heat naturally flows into it until (sufficiently) equalised after a small wait. Take the outside-cool (and expanded) device inside and compress it (it does not expel air!) to have that amount of heat be in a smaller space and thus a higher temperature. High enough to (quite naturally) flow into the room. Thus low-temperature heat taken from outside and used to increase the higher-temperature heat inside, which is different to what happens if you trap and move cold ''air'' into a warm room. Though perhaps it looks like that on first appearance, except for the colour-cues going all screwy. [[Special:Contributions/162.158.74.96|162.158.74.96]] 09:55, 18 June 2023 (UTC)
Wasnt there a "My hobby is to open my refrigerator and when people tell me that doesnt help, I sneak into their house and use their AC?" Comic? I cant find it, but we should link it in the "how leaving a fridge open doesnt help" section [[Special:Contributions/172.71.142.158|172.71.142.158]] 23:36, 16 June 2023 (UTC)
:Sounds like Steven Wright, he has lots of those "my hobby is" jokes. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 13:29, 17 June 2023 (UTC)

I think it's talking about leaving the door open in general i.e. forgetting to close it when getting groceries, not specifically when he's moving the heat pump [[User:Firestar233|Firestar233]] ([[User talk:Firestar233|talk]]) 23:40, 16 June 2023 (UTC)

I can't think of a good reason to say this, but my new fridge doesn't warm up on the back. It warms on the sides. A bad (and quite a PITA reason) is I had to get a new fridge. Protip: don't panic, and do put the sacks of ice into something that won't leak. First time I've met a fridge that doesn't warm on the back.
Btw, red hot blue cold. Pink? Light blue? A light blue a pink? Shrug. [[Special:Contributions/172.70.43.31|172.70.43.31]] 23:57, 16 June 2023 (UTC)

How many trips would this take? I'll leave the exact parameters of the calculation up to you. (Nerd sniping attempt.) ~ Megan she/her [[user talk:megan|talk]]/[[special:contribs/megan|contribs]] 00:20, 17 June 2023 (UTC)
: 42. But stick figures are just lines and have no surface area for heat transfer.
[[Special:Contributions/172.70.134.236|172.70.134.236]] 01:02, 17 June 2023 (UTC)

Currently, the explanation says you use a heat pump to "transfer heat from a relatively cold area to a relatively hot area". I don't know anything about the named "ideal gas law" in order to be sure enough to change this, but isn't that the wrong way around? If an area is ALREADY cold, why would anybody transfer heat FROM it? 04:49, 18 June 2023 (UTC)
:Let's say it's winter, and it's cold outside. It's warmer inside, but not as warm as you'd like it to be, so you need to warm it up. Where are you going to get the heat from? Traditionally you'd use a boiler to heat up water or electric coils, but these use lots of energy. A heat pump is more efficient, it moves some of the heat from the cold air outside to the inside. You need a pump because it won't move spontaneously -- heat always goes from warmer to colder areas. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 09:49, 18 June 2023 (UTC)
:[edit conflict with the above reply, thus repetition, but as I was adding other stuff too...] It's fridge-logic! i.e., that's what fridges do... and if you're living in a cool climate, you can potentially heat your house above "too cold for indoors" temperatures by extracting heat from the "far too cold for indoors" air that is outside. [[Special:Contributions/162.158.74.96|162.158.74.96]] 09:55, 18 June 2023 (UTC)

Technically, it's not the ''ideal'' gas law in play, since air isn't an ideal gas, and the system would behave similarly for closer-to-reality gas behaviour models. But I can't think of a good way of modifying the article to reflect that. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 16:04, 18 June 2023 (UTC)

Noting you could make hand-crank manual heatpumps that are much easier to use than the one depicted. If it’s doable it’s of meaning because a heatpump can be a big electricity draw, and sometimes electricity is not available. You could also connect a horse, waterwheel, or windmill to it. Making homemade windmills out of bicycle parts is a thing. [[Special:Contributions/172.69.59.147|172.69.59.147]] 20:03, 18 June 2023 (UTC)
:You can make a [https://hackaday.com/2016/08/25/a-refrigerator-cooled-by-rubber-bands/ rubber band heatpump] which works the exact opposite: rubber bands ''heat'' when stretched and ''cool'' when the force is released. This seems counterintuitive, but stretching is adding entropy (as is compressing a gas) and releasing the tension is bringing the entropy back to normal levels again (as is relasing the gas pressure). [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 05:04, 19 June 2023 (UTC)

Folks seem to be assuming that the red side is "indoors", and the blue side is "outdoors", but in my experience exterior doors tend to swing in, not out. The hinge pins on an outwards-swinging door can more easily be accessed, which makes an out-swinging door a poor choice as an exterior door. [[Special:Contributions/172.70.100.224|172.70.100.224]] 20:26, 18 June 2023 (UTC)
::But why would you have steps leading up to the door from the inside? [[User:Firestar233|Firestar233]] ([[User talk:Firestar233|talk]]) 21:55, 18 June 2023 (UTC)
::Many exterior doors open outwards as a matter of safety, especially emergency exits. It's not a big deal if only one or two people are expected to try to exit in event of an emergency, since whoever opens the door can probably take a step backwards to make way for the door. But if there's likely to be crowding at the door, there isn't room for it to swing inwards. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 22:28, 18 June 2023 (UTC)

Talk:2700: Account Problems

2022-11-21T11:16:40Z

IIVQ: 🦙 username example

What was going on with this page? [[User:Sarah the Pie(yes, the food)|Sarah the Pie(yes, the food)]] ([[User talk:Sarah the Pie(yes, the food)|talk]]) 00:58, 19 November 2022 (UTC)

:Vandalism. I mentioned it on the [[explain xkcd:Community portal/Admin requests|Admin requests]] page. It's getting reverted back to normal pretty quickly when it happens, but it will probably keep happening until an admin bans the person doing it, or the person doing it gets bored and stops on their own. [[User:Equites|Equites]] ([[User talk:Equites|talk]]) 01:05, 19 November 2022 (UTC)

are two nazis actually in an edit war or is it just one person astroturfing --[[Special:Contributions/162.158.63.100|162.158.63.100]] 01:18, 19 November 2022 (UTC)

I'm trying to combat it, but I'll only be able to keep this up for around another 20 minutes or so. [[User:InfoManiac|InfoManiac]] ([[User talk:InfoManiac|talk]]) 01:21, 19 November 2022 (UTC)

:Is TheusafBot ofline or something? Generally it handles this sort of stuff pretty well--[[User:Mapron01|Mapron01]] ([[User talk:Mapron01|talk]]) 01:44, 19 November 2022 (UTC)
::I'm pretty sure he is. [[User:Starstar|Starstar]] ([[User talk:Starstar|talk]]) 02:23, 19 November 2022 (UTC)

This reminds me of the time I used a character in my password that was the "stty kill" character for one workstation's default console terminal settings. I normally logged in via ssh, and occasionally logged in via xdm, but the time I tried logging in via the console, it really didn't like what was left of my password. [[Special:Contributions/162.158.62.180|162.158.62.180]] 01:25, 19 November 2022 (UTC)
:Ah, the good old days when ordinary printing characters were used for erase and kill. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 01:43, 19 November 2022 (UTC)

Vandals are just looking for a fun time, generally. Solution: make it not a fun time for them. Revert their edits dryly, patiently, with no particular comment or anything. Eventually they will get bored and find something else to do. Or, perhaps they'll sit there vandalizing while we revert them, we dozens against probably just one vandal. But if you make your irritation clear, that's "fun" to them, and they'll keep at it with renewed vigour. [[Special:Contributions/108.162.216.239|108.162.216.239]] 01:37, 19 November 2022 (UTC)

I accidentally used a backspace character in a username one time. It caused all sorts of problems with my account.

Also, I've never found the whole "The trolls will leave you alone if you don't move." thing to be effective. But I've never found anything else to be effective at universally adjusting behavior either.
-Master Areth

I wrote most of the current page after the first paragraph. It's a fairly sloppy first draft that could probably use some editing. Anyone who can should feel free to clean it up. Especially since the page is now protected (I'm not complaining; it was necessary) and so I can't edit it any more. [[User:Equites|Equites]] ([[User talk:Equites|talk]]) 05:57, 19 November 2022 (UTC)
:Hi [[User:Equites|Equites]], I [[Special:Diff/299457|rewrote]] the explanation, hope that's okay. I removed the references to the security aspect because I didn't think it was relevant. (Also pinging [[User:FrankHightower|FrankHightower]].) --[[User:Hddqsb|Hddqsb]] ([[User talk:Hddqsb|talk]]) 07:59, 20 November 2022 (UTC)

Seems to be another Tech issue comic, its a tech issue with Cueball talking to Megan and the tech issue is extremely cursed. Should we add this one?[[Special:Contributions/162.158.22.98|162.158.22.98]] 06:00, 19 November 2022 (UTC)

"since there is no sequence of keys he could type that would result in a null terminator" ... I can type a NULL (ASCII 00) just fine in my editor on Linux (ctrl-v ctrl-@, the latter I type as ctrl-shift-2). However, I am not quite sure how to phrase this in the explanation without sounding like "Áctually! ...." [[User:henrikar|Henri]]
:I am amused that both in the main text and in this comment something has converted the "at sign" into [email protected].

The title text is likely a reference to [https://www.reddit.com/r/ProgrammerHumor/comments/yqof9f/comment/ivrd9ur/ this reddit post]. [[User:Pb|Pb]] ([[User talk:Pb|talk]]) 07:06, 19 November 2022 (UTC)
: I don't think that's likely... --[[User:Hddqsb|Hddqsb]] ([[User talk:Hddqsb|talk]]) 08:50, 20 November 2022 (UTC)

The only thing is I'm pretty sure it's not terribly difficult to enter a null string character, you just have to know what it is. On a PC with a keyboard that has a number pad, you can press Alt-[Number] to enter special characters using their ASCII code (Alt-65 will get "A", Alt-8 is backspace or delete, I forget which but I think BS, etc. MIGHT need leading zeroes to be 3 digits). The 0 to 31 codes - 32 is space, starting the normal characters - tend to have all the special characters, I think null string is 0? [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 04:14, 20 November 2022 (UTC)
:It is. And (with caveats, depending upon other issues and circumstances) Alt-numpad0 would give me the null-char wherever it's practical and not blocked (intentionally or just because it isn't specifically catered for).[[Special:Contributions/172.71.178.206|172.71.178.206]] 15:25, 20 November 2022 (UTC)
::I know a sysadmin friend of mine had to help a user whose account name was "🦙" (The Llama unicode symbol) and he was on a computer where not all layers between the username field and the password authentication understood unicode. Examples like this will happen in real life. [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 11:16, 21 November 2022 (UTC)

As Cueball is showing and handing over his laptop, I don't think the issue is about a website account (where he could probably do a password reset), but his local account on the laptop, of which he is now locked out, and hopes Poneytail can break into it? [[User:Ghen|ghen]] ([[User talk:Ghen|talk]]) 18:28, 19 November 2022 (UTC)
:Good point, updated to avoid referring to "website" specifically. (Another possibility is that it is the password for some installed application.) --[[User:Hddqsb|Hddqsb]] ([[User talk:Hddqsb|talk]]) 07:17, 20 November 2022 (UTC)

''"Suppose a website's registration form allows the user's new password to have up to 20 characters, but due to a programmer error the login page only accepts passwords with up to 18 characters."'' 
There are also cases where page or application is updated with the expectation that old user accounts will still be working, but updated page no longer accepts same characters (or number of characters) than the old one, locking some people out. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 01:35, 20 November 2022 (UTC)
: Good point. I don't think it's worth adding this to the explanation though ("keep it simple"). --[[User:Hddqsb|Hddqsb]] ([[User talk:Hddqsb|talk]]) 07:20, 20 November 2022 (UTC)

Talk:2687: Division Notation

2022-10-20T07:16:16Z

IIVQ: Dutch view

Fun fact: In Poland, we don't write the long division like that; we just write A:B with the bar above. I was VERY confused the first time I saw that notation. [[Special:Contributions/172.70.246.235|172.70.246.235]] 21:03, 19 October 2022 (UTC)
:Unrelated to {{w|Polish notation}}, i presume? [[Special:Contributions/172.70.134.13|172.70.134.13]] 22:43, 19 October 2022 (UTC)Bumpf

For me, the version on the xkcd website has an additional line ("A/B: Software Engineer") that's not on this site. I think the comic might have been updated. Is anyone else seeing that? [[User:JBYoshi|JBYoshi]] ([[User talk:JBYoshi|talk]]) 23:20, 19 October 2022 (UTC)
:Updated. [[User:Natg19|Natg19]] ([[User talk:Natg19|talk]]) 00:31, 20 October 2022 (UTC)

For the Unicode one, I think it’s a reference to ⁄ (U+2044, fraction slash) or characters like ½, ¼, etc. - [[User:Cherryblossom|Cherryblossom]] ([[User talk:Cherryblossom|talk]]) 00:24, 20 October 2022 (UTC)

Is it important to note that 1/2 auctocorrects to ½ in many text-based programs like Microsoft Word?--[[User:Theunlucky|Theunlucky]] ([[User talk:Theunlucky|talk]]) 02:32, 20 October 2022 (UTC)

It's possible to use fraction-style notation in LaTeX by using \frac, or am I missing something?--[[Special:Contributions/162.158.2.125|162.158.2.125]] 05:49, 20 October 2022 (UTC)

"the long division symbol is only used in some countries". Only English-speaking ones, to be more precise. Most of the countries of the world use a different notation. [[Special:Contributions/172.68.51.80|172.68.51.80]] 06:19, 20 October 2022 (UTC)

In the UK, the 'long division symbol' is nowadays often referred to (particularly with Primary classes, children aged 4 - 11) as the "Bus Stop Method". Because it looks like a UK bus shelter. [[User:MarquisOfCarrabass|MarquisOfCarrabass]] ([[User talk:MarquisOfCarrabass|talk]]) 07:07, 20 October 2022 (UTC)

As a Dutch primary schoolchild, I have used a÷b for calculations and "a over b" for fractions (e.g. ⅘).
For more difficult divisions, like what is 785/35, we used [https://nl.m.wikipedia.org/wiki/Staartdeling Staartdelingen] (nl), long division, of which the primary notation is 35/735\.
I think in early highschool we started using a over b for more complex calculations, "like (x+3) over 5 = 2, what is x". I had up to this XKCD never seen B⟌A, and would confuse it for what we use as square root symbol (√). [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 07:16, 20 October 2022 (UTC)

2684: Road Space Comparison

2022-10-12T22:27:27Z

IIVQ:

{{comic
| number = 2684
| date = October 12, 2022
| title = Road Space Comparison
| image = road_space_comparison_2x.png
| imagesize = 740x1157px
| noexpand = true
| titletext = I wonder how hard it would be to ride an electric scooter in a hamster ball.
}}

==Explanation==
{{incomplete|Created by a CHAD WALKABLE CITIES ENJOYER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The comic is a parody of a common comparison done in arguments for walkable cities - the amount of usable space taken up by cars and car-centric infrastructure that could be eliminated for other useful public amenities, the first of which may be from 1978[https://www.fietsersbond.nl/nieuws/van-wie-is-de-ruimte/], may be inspired by a parody that compares the space taken up by 50 people on different modes of transportation, to 150,000 bats flying over the roadway. Like the parody, this strip devolves further into absurdity.

The first 4 ones are common, real-life comparisons involving people walking, people on bicycles, public transport and private car ownership, which distinctly show how all the alternatives to cars take up significantly less space than cars do for the same amount of people. However it is from this point the comic starts becoming more and more absurd in its comparisons.

The 5th one shows 50 people on a tandem cycle. This would obviously be impractical in a city due to its sheer length and would not be able to work with less people due to its sheer mass. The longest tandem bicycle holds about 20 people<ref>https://www.earthridercycling.com/earth-rider-blog/the-best-postion-on-a-bike#/</ref> which this bicycle outstrips by a significant margin.

The 6th one involves 20 people driving 40 cars, with each person driving 2 cars at a time by straddling them in the middle. Besides being unwieldy and impractical it is also extremely dangerous as the cars could go out of control at any time. Its also results in a really bad traffic jam.

The 7th one has 30 cars riding on 6 buses by stacking them on top of each other. Assuming the same people-per-car/bus ratio from the earlier examples, this arrangement would have about 345 people riding across the same road! However, people getting out of the car when they reach somewhere is a problem for most cars in this arrangement however due to them being stacked under other cars or surrounded by them.

The 8th panel has 50 people in hamster balls. Randall has shown his interest in human sized [[:Category:Hamster Ball|hamster ball]] transportation before, and indeed this would be an enjoyable way to traverse a road, provided no other hamster balls try to drive into you and knock you off the road.

The 9th panel has 40 tiny cars pulling a big one. Such feats of strengths are a common sight while setting world records, so maybe this is a world record attempt by the cars in question. It is unknown how many people fit in the big car.

The 10th panel is a 50 person variation on the classic Boat Crossing Puzzle, which has also been [[2348: Boat Puzzle|referenced before]] by Randall, except this one involves 30 goats, 20 cabbages and 10 wolves trying to cross the now-flooded road with a single boat. It is not known how many people (or cabbages for that matter) the boat fits, but since humans significantly outnumber the goats, cabbages and wolves it doesn't seem like too much of a problem.

The title text proposes a problem related to another alternative form of transport - the electric scooter. Randall wonders how well an electric scooter would function when run inside the hamster ball. This would probably function like a monowheel of sorts.

==Transcript==
[A picture of many traffic scenarios are shown, with the last one being part of a river with road on either side.]
{|class="wikitable" style="marginauto"
|+Road space comparision
|-
!50 people walking!!50 people riding bikes!!50 people riding a bus!!50 people in 33 cars!!50 people on one tandem bicycle
|-
|A picture of 50 people walking on the left lane of a road.||A picture of 50 bicycles with people on them on the left lane of a road.||A picture of a single bus.||A picture of 33 cars filling the road||A picture of 50 people on one long tandem bicycle.
|-
!20 people driving 40 cars!!30 cars riding on 6 buses!!50 people in human-sized hamster balls!!One giant car pulled by 40 smaller ones!!50 people with 30 goats, 20 cabbages, and 10 wolves
|-
|A picture of 40 cars with 20 people between them with one leg in each side window.||A picture of 30 cars stacked as to fit on 6 buses.||50 hamster balls, each containing a person.||A large car connected to 40 normal cars by rope.||A picture of a road separated by a river. In said river is a dock and boat, and on the side closest to us are 50 people, 30 goats, 20 cabbages, and 10 wolves.
|-
|}
{{comic discussion}}
[[Category:Hamster Ball]]

2684: Road Space Comparison

2022-10-12T22:26:42Z

IIVQ: /* Explanation */

{{comic
| number = 2684
| date = October 12, 2022
| title = Road Space Comparison
| image = road_space_comparison_2x.png
| imagesize = 740x1157px
| noexpand = true
| titletext = I wonder how hard it would be to ride an electric scooter in a hamster ball.
}}

==Explanation==
{{incomplete|Created by a CHAD WALKABLE CITIES ENJOYER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The comic is a parody of a common comparison done in arguments for walkable cities - the amount of usable space taken up by cars and car-centric infrastructure that could be eliminated for other useful public amenities, the first of which may be from 1978[https://www.fietsersbond.nl/nieuws/van-wie-is-de-ruimte/].
may be inspired by a parody that compares the space taken up by 50 people on different modes of transportation, to 150,000 bats flying over the roadway. Like the parody, this strip devolves further into absurdity.

The first 4 ones are common, real-life comparisons involving people walking, people on bicycles, public transport and private car ownership, which distinctly show how all the alternatives to cars take up significantly less space than cars do for the same amount of people. However it is from this point the comic starts becoming more and more absurd in its comparisons.

The 5th one shows 50 people on a tandem cycle. This would obviously be impractical in a city due to its sheer length and would not be able to work with less people due to its sheer mass. The longest tandem bicycle holds about 20 people<ref>https://www.earthridercycling.com/earth-rider-blog/the-best-postion-on-a-bike#/</ref> which this bicycle outstrips by a significant margin.

The 6th one involves 20 people driving 40 cars, with each person driving 2 cars at a time by straddling them in the middle. Besides being unwieldy and impractical it is also extremely dangerous as the cars could go out of control at any time. Its also results in a really bad traffic jam.

The 7th one has 30 cars riding on 6 buses by stacking them on top of each other. Assuming the same people-per-car/bus ratio from the earlier examples, this arrangement would have about 345 people riding across the same road! However, people getting out of the car when they reach somewhere is a problem for most cars in this arrangement however due to them being stacked under other cars or surrounded by them.

The 8th panel has 50 people in hamster balls. Randall has shown his interest in human sized [[:Category:Hamster Ball|hamster ball]] transportation before, and indeed this would be an enjoyable way to traverse a road, provided no other hamster balls try to drive into you and knock you off the road.

The 9th panel has 40 tiny cars pulling a big one. Such feats of strengths are a common sight while setting world records, so maybe this is a world record attempt by the cars in question. It is unknown how many people fit in the big car.

The 10th panel is a 50 person variation on the classic Boat Crossing Puzzle, which has also been [[2348: Boat Puzzle|referenced before]] by Randall, except this one involves 30 goats, 20 cabbages and 10 wolves trying to cross the now-flooded road with a single boat. It is not known how many people (or cabbages for that matter) the boat fits, but since humans significantly outnumber the goats, cabbages and wolves it doesn't seem like too much of a problem.

The title text proposes a problem related to another alternative form of transport - the electric scooter. Randall wonders how well an electric scooter would function when run inside the hamster ball. This would probably function like a monowheel of sorts.

==Transcript==
[A picture of many traffic scenarios are shown, with the last one being part of a river with road on either side.]
{|class="wikitable" style="marginauto"
|+Road space comparision
|-
!50 people walking!!50 people riding bikes!!50 people riding a bus!!50 people in 33 cars!!50 people on one tandem bicycle
|-
|A picture of 50 people walking on the left lane of a road.||A picture of 50 bicycles with people on them on the left lane of a road.||A picture of a single bus.||A picture of 33 cars filling the road||A picture of 50 people on one long tandem bicycle.
|-
!20 people driving 40 cars!!30 cars riding on 6 buses!!50 people in human-sized hamster balls!!One giant car pulled by 40 smaller ones!!50 people with 30 goats, 20 cabbages, and 10 wolves
|-
|A picture of 40 cars with 20 people between them with one leg in each side window.||A picture of 30 cars stacked as to fit on 6 buses.||50 hamster balls, each containing a person.||A large car connected to 40 normal cars by rope.||A picture of a road separated by a river. In said river is a dock and boat, and on the side closest to us are 50 people, 30 goats, 20 cabbages, and 10 wolves.
|-
|}
{{comic discussion}}
[[Category:Hamster Ball]]