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Sean Carroll
seanmcarroll.bsky.social
did:plc:7odhgjrqjyqrjqvzxxmqzlz6
The coarse-graining step, mapping a large number of microstates of particles into a single macroscopic fluid description, is of course fraught with philosophical peril. Who decides what coarse-graining is the right one? Ultimately it’s what gives an effective emergent higher-level theory.
2025-10-07T20:03:51.659Z