Ep63 - Sean Carroll: "Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime"
Talks at Google
00:00
Is There a Sea Change in Quantum Mechanics?
If there's a finite number of branches possible and branching is happening all the time, math theorems tell us, we're going to run out of branches. And what it would look like, it's just the approach to thermal equilibrium within any one branch. What happens is all the branches become indistinguishable from each other because equilibrium looks the same no matter where you started. So in some very real sense, once that happens, it's not so much that branches refuse together as there's no difference between the different branches. There's no obvious way to divide the universe in branches at all.
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