On Thursday, November 7, 2019 at 3:53:12 PM UTC-6, Brent wrote: > > > > On 11/7/2019 1:40 PM, Bruce Kellett wrote: > > On Fri, Nov 8, 2019 at 6:35 AM 'Brent Meeker' via Everything List < > [email protected] <javascript:>> wrote: > >> On 11/7/2019 12:21 AM, Philip Thrift wrote: >> >> >> >> The mystery is: Why do (according to the science press in the wake of >> Sean Carroll's book) so many people think Many Worlds is a good scientific >> idea (or the best idea, according to the author). >> >> >> Because it treats measurement as just another physical interaction of >> quantum systems obeying the same evolution equations as other interactions. >> > > But you can do that (viz. accept that people, and measuring instruments, > and everything else are basically quantum mechanical) without adopting the > "many worlds" philosophy. > > > ISTM that creates problem for defining a point where one of the > probabilities becomes actualized. MWI tries to avoid this by supposing > that all probabilities are "actualized" in the sense of becoming orthogonal > subspaces. There are some problems with this too, but I see the attraction. > > Brent > > > I studied probability theory - and statistics - through the 70s - my thesis was in random fields [ def: https://en.wikipedia.org/wiki/Random_field ] - and T've read much on 'interpretations' of probability and statistics.
I'll just say that the vocabulary I see with 'probability' in the way some are describing things like Many Worlds are just baffling to me - probability theory-wise. I know one can have a Bayesian probabilities sense of 'a probability becomes 1.0' as in a prior to posterior probability updating, but I don't think the Many Worlds people are doing this. It's like a hybrid of QBI and MWI maybe. @philipthrift -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/8e85884f-a817-464c-b741-b86e23d48f3b%40googlegroups.com.
