On Sat, Jun 16, 2018 at 4:41 PM, Brent Meeker <[email protected]> wrote:
*>That's where MWI gets fuzzy. Do all the submicroscopic events that > make to macroscopic difference create different worlds? * > Yes, or at least that's what Everett said. > > > *That can't be right because "worlds" are classical things.* > At human sizes and masses and speeds to a very good approximation things are classical, that's why classical physics is still taught in schools. When we talk about a world we're not really talking about a single thing but a collection of worlds that are subjectively indistinguishable or almost indistinguishable, that's why the Born Rule can only give probabilistic answers. As to why the probability is the Born rule, that is to say proportional to the square of the magnitude of the particle's wave-function and not the cube or something else, its because Gleason's Theorem says that the only one that is unitary, the only one where all the probabilities add up to exactly 1. John K Clark -- 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 post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
