[gameshot911]

That's actually a really fascinating science fiction idea!

[com2kid]

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

:-D

It's a topic that has been explored quite a bit in science fiction literature.

[willcipriano]

It's sort of the plot of the Douglas Adam's books.

https://hitchhikers.fandom.com/wiki/Earth

[karmakaze]

Related to the fallacy of comparing what's slow in our world with what's computable in a simulation of it--there's no requirement for time to tick similarly.