On Sun, Feb 23, 2020 at 9:23 AM 'Brent Meeker' via Everything List < [email protected]> wrote:
> On 2/22/2020 2:10 PM, Bruce Kellett wrote: > > On Sun, Feb 23, 2020 at 7:17 AM 'Brent Meeker' via Everything List < > [email protected]> wrote: > >> >> But isn't that just a matter of it's proponents overselling it. If you >> say, well it's a probabilistic theory, then that the Born rule is the way >> to get a probability is fairly compelling. >> > > Many-world proponents certainly oversell Everett. I have not seen anybody > admit openly that there is a problem with getting probability into a > deterministic theory so it just has to be put in by hand. If, as you say, > people admit that what they really want is a probabilistic theory, even if > they have to force it in by hand, then at least some of the arguments for > the Born rule make sense. But if you insist that your theory is pure > SWE/Everett, then all attempts at deriving the Born rule from this > deterministic position fail. > > The arguments that I have developed here, based on Kent's insight, take > Many-worlds at face value. Then the theory is clearly incoherent, or at > least incompatible with observation. However, if you take a classical > deterministic theory, such as Bruno's WM-duplication thought experiment, > then there is no way you can sensibly interpret such a theory > probabilistically. > > > You don't think copying of persons has a probabilistic implication for > copies? > Only if you say so. The trouble, as I have pointed out, is that if they estimate their probabilities on the basis of the data they each collect from repeated trials, they all come to different answers. And all of these answers are equally justifiable. The concept of "a probability" in this situation is valueless. The duplication case is similar to the question Carroll poses: "What branch will I end up on?" A question he rightly dismisses as misguided. Bruce -- 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/CAFxXSLSGxtCrxN%3DDkFoT36%3DPDe-NRjYRc47uaPNsKJAveP4QLw%40mail.gmail.com.
