On Fri, Dec 25, 2020 at 2:37 AM smitra <smi...@zonnet.nl> wrote: > On 23-12-2020 05:17, Bruce Kellett wrote: > > On Wed, Dec 23, 2020 at 2:53 PM smitra <smi...@zonnet.nl> wrote: > > > >> imposing the Born rule by fiat is not incompatible with each outcome > >> > >> being realized. > > > > It is, actually. The Born rule gives probabilities that are > > incompatible with every outcoming occurring on every trial. If every > > outcome always occurs you are led to statements such as "This low > > probability outcome is certain to occur", which is nonsense. If > > something is certain to occur, it has probability one, but the Born > > rule never gives unit probability to a single outcome from the set. > > The probability of 1 here is what you get when you consider the entire > multiverse, but this is not the probability that one measures in > experiments to which the Born rule refers to. This probability is > contained in the statistics of the outcome of many experiments, and this > exists in a physical form accessible to the observer. So, if 100 spin > measurements experiments have been done then the outcomes of these exist > in each sector in the form of a physical record. >
Confusing how you measure the probability with how it is calculated as the mod-square of the amplitude is something of a mistake. However, the inherent contradiction cannot be pushed off into the multiverse as you seem to think. The branch we are on is part of the multiverse, and it exists with probability one. But the mod-squared amplitude of the branch is less than one, so there are two distinct calculations of the probability for the existence of our branch, and they don't agree. The same holds for every branch, so the contradiction is present in every branch of the multiverse -- not easily dispatched! 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 everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAFxXSLRpSbr40LHO99i_PJY0zBiunpQfEZ5mYzfpDu8eDTHECg%40mail.gmail.com.
