607: 2038

Explain xkcd: It's 'cause you're dumb.
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2038
If only we'd chosen 1944-12-02 08:45:52 as the Unix epoch, we could've combined two doomsday scenarios into one and added a really boring scene to that Roland Emmerich movie.
Title text: If only we'd chosen 1944-12-02 08:45:52 as the Unix epoch, we could've combined two doomsday scenarios into one and added a really boring scene to that Roland Emmerich movie.

[edit] Explanation

The 2038 problem is a well-known problem with 32-bit Unix-based operating systems. Unix time is stored as a 32-bit signed integer on these systems, counting the number of seconds since 1970. In 2038, we overflow the highest number we can store in 32-bit integers, leading to unexpected behavior. The switch to 64-bit operating systems will most likely be complete by the year 2038, which is why the speaker is relieved. The reference to Y2K is a throwback to the year 2000 problem, in which people were concerned that computers storing digits as two numbers (e.g.: 99 to represent 1999) would cause problems when the year 2000 began. In both situations, the situation is largely resolved before the actual event, leading to few if no practical problems for users.

The title text is a reference to the film "2012" which is about the world ending in December of 2012, at the end of the Mayan calendar. If the designers of the UNIX operating system had used 1944 as their epoch instead of 1970, then the UNIX crash due to a variable overflow would coincide with the end of the Mayan calendar. Thus, the implication is that there could have been a boring scene in the movie where the UNIX time rolls over and nothing happens (and no one cares, since the world is ending).

[edit] Transcript

I'm glad we're switching to 64-bit, because I wasn't looking forward to convincing people to care about the Unix 2038 problem.
Friend: What's that?
Cueball: Remember Y2K? This could be even worse!
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Discussion

Can anyone explain the mouse-over text? Saibot84 (talk) 23:02, 7 May 2013 (UTC)
Good thing it's explained now, because I was relating 1944 and apocalypse with WW2. 108.162.212.196 21:57, 3 January 2014 (UTC)
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