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2025-05-05 12:01:19 UTC

David Quintero on Nostr: Interesting bit about Sean Carroll's April AMA. He says he assumes that brute facts ...

Interesting bit about Sean Carroll's April AMA. He says he assumes that brute facts exist (although he says other people think differently). But that for him it's clear.

He mentions the work of the philosopher David Lewis, who wrote about the plurality of the worlds: there're many possible worlds (for instance a world with a different charge for the electron, or different initial conditions...) but we happen to live in this one. That's a brute fact. We can't explain why we live in this particular world.

Anthropic considerations allow you to leave out worlds where it would be impossible for us to exist, but you still have a plethora of possible worlds. Even if you have a principle that selects the world (the best or the simplest world), Carroll says, that principle would be a brute fact, because it could have been another one.

Some people have even claimed that the universe is the greatest brute fact ever.