On Friday, February 14, 2020 at 3:34:59 AM UTC-6, Bruce wrote: > > On Fri, Feb 14, 2020 at 7:56 PM Alan Grayson <agrays...@gmail.com > <javascript:>> wrote: > >> On Thursday, February 13, 2020 at 4:33:52 PM UTC-7, Brent wrote: >>> >>> On 2/13/2020 1:17 PM, Alan Grayson wrote: >>> >>> Bruce argues that the MWI and Born's rule are incompatible. I don't >>> understand his argument, no doubt my failing. >>> >>> >>> I don't think they are incompatible; it's just that the Born rule has to >>> stuck in somehow. It's not implicit in the SWE and can't be derived from >>> the linear evolution. Somehow a probability has to be introduced. Once >>> there is a probability measure, then it can be argued via Gleason's theorem >>> that the only consistent measure is the Born rule. >>> >>> Brent >>> >> >> I think what Bruce is trying to show, is that using the MWI, one CANNOT >> derive Born's rule as claimed by its advocates. But whether one affirms MWI >> or not, the only thing one has to work with is an ensemble generated by >> measurements in THIS world. So if you cannot derive Born's rule using a >> one-world theory, it would seem impossible to do so with many-worlds, since >> in operational terms -- what is observed -- the two interpretations are >> indistinguishable. AG >> > > That's quite an astute observation, Alan. The thing is, we can move on > from there. If Many-worlds is true, all possible sets of measurements are > generated, and most will give different values for the probabilities. For > the observers getting the alternative data, there is nothing to tell them > that they are getting the wrong answer. MWI is incoherent. > > Bruce >
All quantum interpretations have a level of incoherence. LC > ISTM that whether we affirm one world or many worlds, all we can ever >>> measure is what observe in this world, and it is from this world that we >>> generate an ensemble after many trials from which to observe and affirm >>> Born's rule. What am I missing, if anything? TIA, AG >>> >>> -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/50893916-e933-46aa-85ad-7b119ba47896%40googlegroups.com.
