If collapse actually worked the way its adherents say it does, it would be: The only non-linear evolution in all of quantum mechanics. The only non-unitary evolution in all of quantum mechanics. The only non-differentiable (in fact, discontinuous) phenomenon in all of quantum mechanics. The only phenomenon in all of quantum mechanics that is non-local in the configuration space. The only phenomenon in all of physics that violates CPT symmetry. The only phenomenon in all of physics that violates Liouville’s Theorem (has a many-to-one mapping from initial conditions to outcomes). The only
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