explain xkcd - User contributions [en]

Talk:2976: Time Traveler Causes of Death

2025-09-18T09:22:21Z

81.89.66.133:

How'd I do for my first 'explanation?' I know it's short...[[User:Onestay|Onestay]] ([[User talk:Onestay|talk]]) 17:56, 23 August 2024 (UTC)
:I added to it. It's a good start. [[Special:Contributions/172.69.134.191|172.69.134.191]] 17:57, 23 August 2024 (UTC)
::Please sign your comments [[User:Onestay|Onestay]] ([[User talk:Onestay|talk]]) 18:01, 23 August 2024 (UTC)
:::How's this [[Special:Contributions/127.0.0.1|127.0.0.1]] 18:24, 23 August 2024 (UTC)
:::added a table [[User:42.book.addict|42.book.addict]] ([[User talk:42.book.addict|talk]]) 18:20, 23 August 2024 (UTC)
::::added a very necessary "citation needed" thingy - it's traditional [[User:PaulEberhardt|PaulEberhardt]] ([[User talk:PaulEberhardt|talk]]) 08:40, 24 August 2024 (UTC)
I, sometime this century, tripped over a story about a poor fucker who died because he couldn't get out of his Tesla. Turns out iirc that in the foot place in the back is a !!under! the carpet emergency lever that opens the doors. Iirc for no battery power to open the doors to get out of a Tesla you have to rip thecarpet out of the backseat footwell to find the emergency door open lever. I don't recall lawsuits. [[Special:Contributions/172.70.174.195|172.70.174.195]] 01:45, 27 August 2024 (UTC)

Shouldn't there be a thin line for "meteor" just below "trampled", if the time traveller lands during the Chicxulub impact event? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 18:56, 23 August 2024 (UTC)
:Probably a mistake on Randall’s part. He might correct it later (he’s updated other comics before), but unless you have a magic red telephone that reach his personal number right now, all we can do is wait (or add it to the Explanation/Trivia). [[User:42.book.addict|42.book.addict]] ([[User talk:42.book.addict|talk]]) 19:20, 23 August 2024 (UTC)
::For sure not a mistake. Only one day in the entire history of Earth you would die directly from the impact. But the heavy bombardment there would be many days this would happen. Although I just updated the table saying that asphyxiation would still go much faster than waiting for such a meteor. I'm certain that Randall would not update the comic for that. Mainly he updates if he has made a spelling mistake that could alter the meaning or has forgotten some part of a drawing that might seem important. And these events are rare.--[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 08:47, 24 August 2024 (UTC)
:: He might even go back and correct it before he makes it.[[Special:Contributions/172.70.86.173|172.70.86.173]] 08:34, 27 August 2024 (UTC)
:"Meteors" doesn't refer to "the impact" that killed the dinosaurs, it refers to the bombardment period, where the atmosphere was heated to furnace temperatures... No waiting necessary; the impacts were constant for thousands of years. Technically it'd be the heat, not the impacts, that'd kill you, but the heat was a direct result of megatons of debris making atmospheric entry on an ongoing basis. (For a fun fictional description of such a phenomena, check out 'Seveneves' & take the ending with a huge block of salt.)
:[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 03:32, 25 August 2024 (UTC)
::Was the Chicxulub aftermath at all sufficient for "thousands of years" of 'aftershock' impacts? (Or at least enough to make a line on the comic, essentially the same marker as the Cretaceous–Paleogene boundary layer is, geologically.) There were long-term climate effects, but by "bombardment" you seem to refer more to the Late Heavy Bombardment 'Meteors'. From "Seveneyes", which I haven't yet read but I have a general idea of the setup, you're effectively invoking a rerunning the aftermath of the Theia impact (4.5b years ago) in that much of the impact mass/broken Earth that had not at that time fallen back to Earth is now doing so.
::To be thorough, showing thin lines for various "Traps" (like the Deccan ones, coincidental and maybe or maybe not coincidental with Chicxulub, or the Siberian ones) where vulcanism and/or climate might be a very brief (geologically speaking) alternative to the surrounding non-volcano and non-climate 'primary threat'. But it's funnier, as it is, glossing over such transient issues. [[Special:Contributions/172.69.43.245|172.69.43.245]] 04:12, 25 August 2024 (UTC)
::: Yeah, Chicxulub was ''much'' later than the last major bombardment period, & relatively brief even compared to the shorter ice ages, whereas the bombardment period was basically hell on earth for a ''very'' long time... Then again, given the number of species that died out after Chicxulub, even looked at over a million year period or more (anything less than 10 MY would be a bit hard to represent at the scale shown), I do think somewhat indirect results of the "dino-killer" impact(s), such as increased volcanism & climate shift & food chain disruption, which occurred ''because'' of such impact, ''should'' be counted all as one cause of death, in the context of this chart; I guess Randall didn't agree, though?
:::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 14:46, 25 August 2024 (UTC)

I didn't think that the Cryogenian Ice Age was cold enough to be an immediate threat to a typical human, especially if that human was wearing winter clothes, just a long-term threat (mostly due to food). [[Special:Contributions/162.158.41.68|162.158.41.68]] 21:09, 23 August 2024 (UTC)
:Given asphixiation issues could be avoided by taking along appropriate breathing apparatus (and other life-saving solutions may exist for other periods), or just by not leaving your 'tardis' machine (with its airtight door, as hinted at, which may only be a problem if you can't open it again upon return), I think we're talking of essentially unprepared travel to these other times.
:Maybe without a machine (or without taking it with you, given the comic indicating there is one). Not realising what you're walking into, like stumbling through a {{w|Primeval (TV series)|swirling time-wedgie}} or {{w|Pebble in the Sky|being blasted through time}}, might be the primary reason to become a time-traveler. And the everyday Joe that finds themselves doing that out of ignorance is mostly unlikely to have been pre-prepared for any such trip.
:Or otherwise explain the stuck-door of the 'now-ish' era as being you generally would survive most now-ish trips (assuming you didn't do something like land in WW2 directly under a bomb or become captured by people who would be highly suspicious of your digital watch and your lack of valid id), or not actually going anywhen at all, then your death causes could be headlined by something ''really'' trivial like being stuck in a cupboard that forms the basis of the time-machine. (Or {{w|The Lion, the Witch and the Wardrobe|a wardrobe}}... Which I wouldn't put past being Randall's actual reference, on past form.) [[Special:Contributions/172.69.43.174|172.69.43.174]] 22:50, 23 August 2024 (UTC)
:It's not that hard to die of hypothermia in modern winters. Surely that's more likely during an ice age. And the claim isn't that you're really likely to die from these things, just that they're the most likely cause of death at the time. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 03:28, 24 August 2024 (UTC)
::Seems like the entire idea dwells on the fact that you do not think about going back to the present when realizing you are in a dangerous place. If there are air in the time machine then you should have time to go back before dying of the lack of oxygen. But of course if you land in lava it may be too late. What if you went further back and ended in a gas cloud. Would you die of lack of oxygen as well? Guess the actual biggest problem about time travel, if they where possible, is you also have to travel vast distances in space, since Earth has moved quite a bit no matter if you travel 1 hour into the past or a million/billion years. You would end up in empty space unless you also could travel very long distances through space... Sun moves around the galaxy so wont matter going a year back since the Earth are still not back to where it was. And the galaxy also moves... --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 08:47, 24 August 2024 (UTC)

The door is stuck, and you seem to assume the poor traveler is stuck /inside/. I would rather scream for the time police to save me if I am stuck /outside/ in this crappy age :-) [[Special:Contributions/172.69.109.54|172.69.109.54]] 08:37, 24 August 2024 (UTC)

For all the times xkcd has focused on raptors and how to prevent predatory raptor attacks, I'm disappointed that "Trampled" is the main concern for travelers going to the Mesozoic Era. [[User:TCMits|TCMits]] ([[User talk:TCMits|talk]]) 14:00, 24 August 2024 (UTC)
:Maybe the Mesozoic raptors also just tended to get trampled? Only in the modern day are raptors free from the threat of trampling and thus to become a threat to Randall. Especially if the present-day threat is a merely a stuck door. It all fits because, when it comes to things like doors, raptors are known to be Clever Girls! [[Special:Contributions/141.101.98.79|141.101.98.79]] 00:12, 25 August 2024 (UTC)

Disappointing that Randall hasn't set out the main threats when time travelling to future periods, so that we know what to prepare for.[[Special:Contributions/141.101.98.86|141.101.98.86]] 08:41, 27 August 2024 (UTC)
:"Future: If not Morlocks, then Eloi.” Or, if not either, your future self! [[Special:Contributions/172.71.26.60|172.71.26.60]] 12:31, 27 August 2024 (UTC)
: I think the "door ... stuck" is the punchline - it's a reference to the "DOOR STUCK!!! DOOR STUCK!!!" meme coming from the Counter-Strike community [[Special:Contributions/81.89.66.133|81.89.66.133]] 09:22, 18 September 2025 (UTC)

Talk:3137: Cursed Number

2025-09-04T08:55:24Z

81.89.66.133:

Warning! Do not read! 421827639108237885847650045004 --[[User:Darth Vader|Darth Vader]] ([[User talk:Darth Vader|talk]]) 22:00, 3 September 2025 (UTC)
:Oh no, too late! bdbdbalasdfsdfoiubtasdf [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 22:35, 3 September 2025 (UTC)
::Well, at least you knew that reading the string "bdbdbalasdfsdfoiubtasdf" was the only antidote! [[Special:Contributions/92.17.62.87|92.17.62.87]] 23:35, 3 September 2025 (UTC)
:::Maybe it's safe if you read it scientifically? ~4.218276391088547650045x1029?--'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User_talk:DollarStoreBa'al|'''''converse''''']] 23:43, 3 September 2025 (UTC)
:::Edit: NOPE NOPE NOPE NOPE NOPE NOPE NOPE NOPE NOPE --'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User_talk:DollarStoreBa'al|'''''converse''''']] 23:44, 3 September 2025 (UTC)

Wenn ist das Nunstruck git und Slotermeyer? [[Special:Contributions/76.209.228.203|76.209.228.203]] 23:50, 3 September 2025 (UTC)

This comic is the best comic in a while [[User:Mathmaster|Mathmaster]] ([[User talk:Mathmaster|talk]])

[https://en.wikipedia.org/wiki/Pentium_FDIV_bug Pentium FDIV Bug] is a math error when handling specific rarely-encountered numbers. {footnote: over 30 years ago!!} No FDIV deaths are reported, but we might not know. --[[User:PRR|PRR]] ([[User talk:PRR|talk]]) 00:20, 4 September 2025 (UTC)
* ahaha 0.1+0.2 goes brrt (e.g. = 0,30000000000000004) [[Special:Contributions/81.89.66.133|81.89.66.133]] 08:54, 4 September 2025 (UTC)

I have a different interpretation of this comic than the one in the explanation. See, I think it makes more sense that due to the infinite nature of numbers, it can be said that there may exist one that happens to be a severe cognitohazard, rather than there certainly being one such number in the comic's universe. [[User:HoneyBadger|HoneyBadger]] ([[User talk:HoneyBadger|talk]]) 01:55, 4 September 2025 (UTC)

I found this number years ago, while reading a hexadecimal dump of an image file, and yes, it is just as potent, possibly more so, in hexadecimal. Want to know what it is? It starts (in hex of course) DEADFACEABEDEFACEDAFADEDBADBEADEDBEDAD before going off into more ‘normal’ digits. [[Special:Contributions/2607:FB90:8B1D:C283:21DE:C9A5:72EB:C044|2607:FB90:8B1D:C283:21DE:C9A5:72EB:C044]] 03:42, 4 September 2025 (UTC)
* Oh, magic numbers. What about a ''0x31124837h'' pointer?  [[Special:Contributions/81.89.66.133|81.89.66.133]] 08:54, 4 September 2025 (UTC)

SCP nerd here, I think the article should link to a different SCP. SCP-033 isn't really a good example of a cognitohazard, since it affects written/digital storage, not the mind/brain. [https://scp-wiki.wikidot.com/scp-012 SCP-012] for example would be a closer fit. (CW: somewhat graphic self harm) --[[User:Muno|Muno]] ([[User talk:Muno|talk]]) 04:45, 4 September 2025 (UTC)

If one supposes that reading the cursed number inside another number is also bad, then for you to have at most a 1/2 chance of reading it in a string of numbers with the bounds given in the comic, you would have to read 1.8*10^21 digits strung together [[User:TheTrainsKid|TheTrainsKid]] ([[User talk:TheTrainsKid|talk]]) 05:15, 4 September 2025 (UTC)
:Taking an average reading speed of 40 digits per second, that would take the reader a trillion years.
[[Special:Contributions/46.144.8.194|46.144.8.194]] 07:25, 4 September 2025 (UTC)
* Good. Trillion years divided by 9 billion people still gives 111.(1) years of non-stop reading. [[Special:Contributions/81.89.66.133|81.89.66.133]] 08:55, 4 September 2025 (UTC)

Talk:3137: Cursed Number

2025-09-04T08:54:08Z

81.89.66.133:

Talk:3137: Cursed Number

2025-09-04T08:51:04Z

81.89.66.133: nah, some minds has been blown already

Warning! Do not read! 421827639108237885847650045004 --[[User:Darth Vader|Darth Vader]] ([[User talk:Darth Vader|talk]]) 22:00, 3 September 2025 (UTC)
:Oh no, too late! bdbdbalasdfsdfoiubtasdf [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 22:35, 3 September 2025 (UTC)
::Well, at least you knew that reading the string "bdbdbalasdfsdfoiubtasdf" was the only antidote! [[Special:Contributions/92.17.62.87|92.17.62.87]] 23:35, 3 September 2025 (UTC)
:::Maybe it's safe if you read it scientifically? ~4.218276391088547650045x1029?--'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User_talk:DollarStoreBa'al|'''''converse''''']] 23:43, 3 September 2025 (UTC)
:::Edit: NOPE NOPE NOPE NOPE NOPE NOPE NOPE NOPE NOPE --'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User_talk:DollarStoreBa'al|'''''converse''''']] 23:44, 3 September 2025 (UTC)

Wenn ist das Nunstruck git und Slotermeyer? [[Special:Contributions/76.209.228.203|76.209.228.203]] 23:50, 3 September 2025 (UTC)

This comic is the best comic in a while [[User:Mathmaster|Mathmaster]] ([[User talk:Mathmaster|talk]])

[https://en.wikipedia.org/wiki/Pentium_FDIV_bug Pentium FDIV Bug] is a math error when handling specific rarely-encountered numbers. {footnote: over 30 years ago!!} No FDIV deaths are reported, but we might not know. --[[User:PRR|PRR]] ([[User talk:PRR|talk]]) 00:20, 4 September 2025 (UTC)

I have a different interpretation of this comic than the one in the explanation. See, I think it makes more sense that due to the infinite nature of numbers, it can be said that there may exist one that happens to be a severe cognitohazard, rather than there certainly being one such number in the comic's universe. [[User:HoneyBadger|HoneyBadger]] ([[User talk:HoneyBadger|talk]]) 01:55, 4 September 2025 (UTC)

I found this number years ago, while reading a hexadecimal dump of an image file, and yes, it is just as potent, possibly more so, in hexadecimal. Want to know what it is? It starts (in hex of course) DEADFACEABEDEFACEDAFADEDBADBEADEDBEDAD before going off into more ‘normal’ digits. [[Special:Contributions/2607:FB90:8B1D:C283:21DE:C9A5:72EB:C044|2607:FB90:8B1D:C283:21DE:C9A5:72EB:C044]] 03:42, 4 September 2025 (UTC)

SCP nerd here, I think the article should link to a different SCP. SCP-033 isn't really a good example of a cognitohazard, since it affects written/digital storage, not the mind/brain. [https://scp-wiki.wikidot.com/scp-012 SCP-012] for example would be a closer fit. (CW: somewhat graphic self harm) --[[User:Muno|Muno]] ([[User talk:Muno|talk]]) 04:45, 4 September 2025 (UTC)

If one supposes that reading the cursed number inside another number is also bad, then for you to have at most a 1/2 chance of reading it in a string of numbers with the bounds given in the comic, you would have to read 1.8*10^21 digits strung together [[User:TheTrainsKid|TheTrainsKid]] ([[User talk:TheTrainsKid|talk]]) 05:15, 4 September 2025 (UTC)
:Taking an average reading speed of 40 digits per second, that would take the reader a trillion years.
[[Special:Contributions/46.144.8.194|46.144.8.194]] 07:25, 4 September 2025 (UTC)

Talk:3137: Cursed Number

2025-09-04T08:50:23Z

81.89.66.133:

Warning! Do not read! 421827639108237885847650045004 --[[User:Darth Vader|Darth Vader]] ([[User talk:Darth Vader|talk]]) 22:00, 3 September 2025 (UTC)
:Oh no, too late! bdbdbalasdfsdfoiubtasdf [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 22:35, 3 September 2025 (UTC)
::Well, at least you knew that reading the string "bdbdbalasdfsdfoiubtasdf" was the only antidote! [[Special:Contributions/92.17.62.87|92.17.62.87]] 23:35, 3 September 2025 (UTC)
:::Maybe it's safe if you read it scientifically? ~4.218276391088547650045x1029?--'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User_talk:DollarStoreBa'al|'''''converse''''']] 23:43, 3 September 2025 (UTC)
:::Edit: NOPE NOPE NOPE NOPE NOPE NOPE NOPE NOPE NOPE --'''''[[User:DollarStoreBa'al|DollarStoreBa'al]][[User_talk:DollarStoreBa'al|'''''converse''''']] 23:44, 3 September 2025 (UTC)

Wenn ist das Nunstruck git und Slotermeyer? [[Special:Contributions/76.209.228.203|76.209.228.203]] 23:50, 3 September 2025 (UTC)

This comic is the best comic in a while [[User:Mathmaster|Mathmaster]] ([[User talk:Mathmaster|talk]])

[https://en.wikipedia.org/wiki/Pentium_FDIV_bug Pentium FDIV Bug] is a math error when handling specific rarely-encountered numbers. {footnote: over 30 years ago!!} No FDIV deaths are reported, but we might not know. --[[User:PRR|PRR]] ([[User talk:PRR|talk]]) 00:20, 4 September 2025 (UTC)

I have a different interpretation of this comic than the one in the explanation. See, I think it makes more sense that due to the infinite nature of numbers, it can be said that there may exist one that happens to be a severe cognitohazard, rather than there certainly being one such number in the comic's universe. [[User:HoneyBadger|HoneyBadger]] ([[User talk:HoneyBadger|talk]]) 01:55, 4 September 2025 (UTC)

I found this number years ago, while reading a hexadecimal dump of an image file, and yes, it is just as potent, possibly more so, in hexadecimal. Want to know what it is? It starts (in hex of course) DEADFACEABEDEFACEDAFADEDBADBEADEDBEDAD before going off into more ‘normal’ digits. [[Special:Contributions/2607:FB90:8B1D:C283:21DE:C9A5:72EB:C044|2607:FB90:8B1D:C283:21DE:C9A5:72EB:C044]] 03:42, 4 September 2025 (UTC)

SCP nerd here, I think the article should link to a different SCP. SCP-033 isn't really a good example of a cognitohazard, since it affects written/digital storage, not the mind/brain. [https://scp-wiki.wikidot.com/scp-012 SCP-012] for example would be a closer fit. (CW: somewhat graphic self harm) --[[User:Muno|Muno]] ([[User talk:Muno|talk]]) 04:45, 4 September 2025 (UTC)

If one supposes that reading the cursed number inside another number is also bad, then for you to have at most a 1/2 chance of reading it in a string of numbers with the bounds given in the comic, you would have to read 1.8*10^21 digits strung together [[User:TheTrainsKid|TheTrainsKid]] ([[User talk:TheTrainsKid|talk]]) 05:15, 4 September 2025 (UTC)
:Taking an average reading speed of 40 digits per second, that would take the reader a trillion years.
[[Special:Contributions/46.144.8.194|46.144.8.194]] 07:25, 4 September 2025 (UTC)

I dunno about a singular numbers, but an array of 2 4-digit elements, such as {1337; 1987} is enough to (w)hack many mi(n)ds. [[Special:Contributions/81.89.66.133|81.89.66.133]] 08:50, 4 September 2025 (UTC)