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Black holes are basically the toilets of the universe.
(lemmy.world)
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. A showerthought should offer a unique perspective on an ordinary part of life.
Go read about the holographic principle. Also most scientists don't think singularities actually exist. Infinities pop up where our math doesn't make sense anymore.