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A drunk person wandering outside will always find their way back but a drunk bird probably won't.
(self.showerthoughts)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
So if we ignore that birds can't fly infinitely high, and also that they don't live in the air they live on a surface, in essentially a 2D area the same as humans, maybe this is interesting? But not really lol.
If you limit the extent of the third dimension to any finite value then my intuition says the probability is probably back to 100% but I don't know for certain.