On Thu, Feb 26, 2015 at 5:57 PM, meekerdb <[email protected]> wrote:
> On 2/26/2015 3:16 PM, LizR wrote: > > On 27 February 2015 at 10:01, meekerdb <[email protected]> wrote: > >> MWI predicts the same as QM+collapse. >> >> Only because it assumes the Born rule applies to give a probability >> interpretation to the density matrix. But Everettista's either ignore the >> need for the Born rule or they suppose it can be derived from the SWE >> (although all attempts have fallen short). >> >> This is an important point. Do *any* interpretations explain the Born > rule? If so, that would be a reason to prefer them to the MWI. > > > Gleason's theorem says the Born rule is the only consistent way to assign > probabilities to states in Hilbert space (showing Born had good intuition). > So then the mystery of the Born rule is solved. I don't see why/how adding collapse solves anything. > So if you can justify placing a measure on the multiple worlds it has to > be Born's rule. The problem seems to be that branch counting doesn't make > sense unless the number of branches are infinite. > Why is that? > But if they're infinite it's not clear how to define the measure. > Why is that? Does the size of the infinity matter? > Perhaps taking the limit of branch counting as the number of UD threads > goes to infinity would work, but that seems non-Platonic since it would > rely the threads coming into existence as on a concrete UD. > > This is separate (I think) from the basis problem. Under a > computationalist theory of mind it would seem that you need to define bases > with eigenvectors like, "I see the needle pointing up." But we only know > (approximately) how to define eigenvectors for the needle. > Would it be equivalent to the eigenvector of the needle pointing up and you looking at it? Jason -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
