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multiverse philosophy Physics

Boltzman Brains

https://en.wikipedia.org/wiki/Boltzmann_brain

TLDR: It’s more likely that a human brain (complete with human thoughts/memories) snaps into existence than it is for our Universe to exist with us in it. It’s actually more likely that we are all Boltzman brains.

It’s completely bonkers, and that’s the point. The fact that our Universe is exists in the way it does is completely bonkers. This example is meant to highlight that.

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