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Eliezer_Yudkowsky comments on If Many-Worlds Had Come First - Less Wrong
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There's certainly one obvious explanation which occurs to me. There being a copy of you in another universe seems more counterintuitive than needing to give up on measuring distances, so it's getting more like the backlash and excuses that natural selection got, or that was wielded to preserve vitalism, as opposed to the case of Special Relativity. Also the simple answer seems to have been very hard to think of due to some wrong turns taken at the beginning, which would require a more complex account of human cognitive difficulty. But either way it doesn't seem at all unnatural compared to backlash against the old Earth, natural selection, or other things that somebody thought was counterintuitive.
You mean that "simple answer" that still can't make predictions?
You need to realize that the "simple answer" isn't so simple- no one has been able to use the axioms for many worlds to make an actual calculation of anything. By kicking away the Born amplitudes, they've kicked away the entire predictive structure of the theory. You are advocating that physicists give up the ability to make predictions!
Its even worse when you go to quantum field theories and try to make many worlds work- the bulk of the amplitude will be centered on "world's" with undefined particle number.