> On 8 Feb 2020, at 01:16, Bruce Kellett <[email protected]> wrote: > > On Sat, Feb 8, 2020 at 4:33 AM Stathis Papaioannou <[email protected] > <mailto:[email protected]>> wrote: > On Fri, 7 Feb 2020 at 15:59, Bruce Kellett <[email protected] > <mailto:[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.
You might confuse the 1p and 3p points of view. See my other posts on this. Bruno > > 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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/CAFxXSLSMSj6A%3DUdiK0wCwjb7%2BcnkvVW%2BU9zvDaGcwYk_JhREog%40mail.gmail.com > > <https://groups.google.com/d/msgid/everything-list/CAFxXSLSMSj6A%3DUdiK0wCwjb7%2BcnkvVW%2BU9zvDaGcwYk_JhREog%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- 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/8945425F-A162-40CE-88E3-2602A902EE58%40ulb.ac.be.
