philosophy of sciencephysicsemergence
Carroll’s argument for the Everettian “many-worlds” reading of quantum mechanics, made on grounds of austerity rather than extravagance: the wave function evolving smoothly is all the theory actually says, and every attempt to add a collapse, a hidden variable, or an observer is an addition. The many worlds are not posited — they are what you are left with when you stop deleting things.
The book’s second half is more speculative, sketching how spacetime itself might emerge from patterns of quantum entanglement. Read alongside The Big Picture, it shows the same instinct twice: take the formalism seriously, and let the familiar world appear as a higher-level description rather than a foundation.
