On Sat, 8 Feb 2020 at 11:16, Bruce Kellett <[email protected]> wrote:
> On Sat, Feb 8, 2020 at 4:33 AM Stathis Papaioannou <[email protected]> > wrote: > >> On Fri, 7 Feb 2020 at 15:59, Bruce Kellett <[email protected]> >> wrote: >> >>> >>> This argument from Kent completely destroys Everett's attempt to derive >>> the Born rule from his many-worlds approach to quantum mechanics. In fact, >>> it totally undermines most attempts to derive the Born rule from any >>> branching theory, and undermines attempts to justify ignoring branches on >>> which the Born rule weights are disconfirmed. In the many-worlds case, >>> recall, all observers are aware that other observers with other data must >>> exist, but each is led to construct a spurious measure of importance that >>> favours their own observations against the others', and this leads to an >>> obvious absurdity. In the one-world case, observers treat what actually >>> happened as important, and ignore what didn't happen: this doesn't lead to >>> the same difficulty. >>> >> Nevertheless Many Worlds is at least logically possible. What would the >> inhabitants expect to see, if not the world we currently see? >> > > > Many-worlds might be logically possible, but it is also completely > useless. If every possible outcome from any experiment/interaction actually > occurs, then the total data that results is independent of any probability > measure. Consequently, one cannot use data from experiments to infer > anything about any underlying probabilities, even if such exist at all. In > particular, Many-worlds is incompatible with the Born rule, and with the > overwhelming amount of evidence confirming the Born rule in quantum > mechanics. So Many-worlds (and Everett) is a failed theory, disconfirmed by > every experiment ever performed. If Many-worlds is correct, then the > inhabitants have no basis on which to have any expectations about what they > might see. > So are you suggesting that the inhabitants would just see chaos? > -- Stathis Papaioannou -- 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/CAH%3D2ypWgcO_zJqfR8Ppm_9DgnhOgZGd2dFFnHpEpVA%2B_HYSFmw%40mail.gmail.com.
