On Fri, Jun 21, 2019 at 10:35 PM Bruno Marchal <[email protected]> wrote:
> On 21 Jun 2019, at 09:04, Bruce Kellett <[email protected]> wrote: > > On Fri, Jun 21, 2019 at 4:26 PM 'Brent Meeker' via Everything List < > [email protected]> wrote: > >> >> To disconfirm MWI you'd have to observe statistics far from the expected >> value, >> > > To make my point more strongly, that is the wrong way round. Observation > of statistics far from the expected value is what would be required to > confirm MWI. > > > I don’t see this at all. > You obviously have not grasped the argument. In the single world picture, there is an objective probability, so all observations must confirm this probability, within statistical errors. In MWI all outcomes occur with probability one, so all possible sequences of results are certain to occur. If one sees a sequence that is improbable on the single world view, it is more likely that one is observing one of the certainly existing sequences in MWI. The fact that we don't observe such results is the strongest possible case > against MWI! > > > ? > > The probability to see a deviation is the same in both Everett, and > Copenhagen. > That is not the case. Because in Everett there is no objective probability for the occurrence. Or at least, observation cannot establish such a single probability value -- all outcomes are realised for certain, and one does not have any independent evidence about what branch one is on. In the single world model, there is a theoretical probability, and all observations must be dependent on this underlying distribution. > The deviation expected is the same, so if there is a deviation, it can > hardly be used to claim one theory is more correct than the other. > The deviation is more likely in many worlds, since one can be on any branch in that theory. Deviations are more common. 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/CAFxXSLS1YVYVHKoKfeGitrmSZQWZCC2SgWj1Ui8N7pECzfhqvg%40mail.gmail.com.
