On 9/2/2013 12:33 PM, Quentin Anciaux wrote:
2013/9/2 meekerdb <[email protected] <mailto:[email protected]>>On 9/2/2013 11:45 AM, Craig Weinberg wrote: Is it scientific? As a general principle, determinism is meta-physics. I doubt that it can be strictly falsified because every possible test depends on auxiliary hypotheses which one might be willing to give up before declaring a general metaphysical principle was invalid. But in the sense of having the preponderance of evidence against it, determinism has been falsified. Quantum mechanics showed experimentally that no *local* deterministic theory can be right. So the principle of determinism conflicts with the principle of localism (no faster than light signaling). Determinism can be saved by introducing non-local theories, like Bohmian quantum mechanics or Everett's multiple worlds.ISTM MWI is local but multi-valued, but local (no information travel faster than the speed of light).
I think it depends on the model of MWI. If you take Everett's original idea then a split due to a measurement "here", splits the wave function of the universe everywhere. Of course it's "local" in the Hilbert space where it's just a different projection. If you consider a decoherence model then the "split" propagates out from the "measurement" event. If you consider the multiverse model, then nothing physical propagates, you just learn which universe "you" are in (which was a non-local hidden variable).
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