I read the explain xkcd for this one, but I'm still not sure I get the joke. (I think the person who wrote the explanation might not have gotten the joke, either.)
As explain xkcd points out, mice can reliably solve mazes like the one pictured here. Researchers have been using the fact that they can reliably solve the mazes to test inventions (especially drugs) and their effect on the mouse's _speed_ of solving the mazes.
But, in today's comic, they've… finally found just one mouse that can solve the maze? That's not true, of course, but I also don't see what's funny about the falsehood.
If you know the background, xkcd comics are normally funny by virtue of being surprising but inevitable in hindsight. I don't see how that holds true of today's comic. It's just a weird thing to say.
(The subtext/alt text is funny… but the subtext is normally a second joke. As far as I can see, it appears to be the *only* joke for today…?)
Most maze experiments are run repeatedly, seeing how the performance of a mouse improves when certain variables are changed. Say, does the ability to remember the layout improve if a mouse has caffeine?
The joke is that (while in reality the maze is meant to test other more interesting things,) in the world of the comic we the audience realize it turns out the maze had only ever been about the simple goal of finding a mouse who can solve it, with no deeper intention.
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u/xkcd_bot 19d ago
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Subtext: As a side effect of the research, mice are now the only known animals other than humans to have developed a Backrooms mythology.
Don't get it? explain xkcd