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timtyler comments on Bloggingheads: Yudkowsky and Aaronson talk about AI and Many-worlds - Less Wrong
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The first sentence lays out the issue:
"the law conservation of energy is based on observations within each world. All observations within each world are consistent with conservation of energy, therefore energy is conserved."
Conservation of energy takes place within worlds, not between them.
FWIW, I first learned about the MWI from: Paul C.W. Davies' book: "Other Worlds" - waay back in the 1980s. It was quite readable - and one of the better popular books on QM from that era. It succeeded in conveying the "Occam" advantage of the theory.
OK, if that's really what it takes I guess I'll leave it at that. But I don't see the loss of generality from conservation laws operating on any closed system as a good thing, and I can't understand how weighting a world (that is claimed to actually exist) by a probability measure (that I've seen claimed to be meant as observed frequencies) is actually a reasonable thing to do.
I would actually like to understand this, and I suspect strongly that I'm missing something basic. Unfortunately, I don't have the time to make my ignorance suitable for public consumption, but if anyone would like to help enlighten me privately, I'd be delighted.