On Tue, Feb 11, 2025 at 6:34 PM Brent Meeker <[email protected]> wrote:
*> as soon as you involve separate non-interacting worlds, and rely on > decoherence to give (approximate) orthogonality, then you have assumed that > small amplitudes correspond to low probability -- which is just the Born > rule* *If, due to decoherence, a systen is orthogonal to all other systems and the elements of the system are maximally entangled with each other, then because of symmetry, elements with equal quantum amplitude must have equal probability, so if the total effect of something is the sum of its individual parts then the only consistent probability rule, in three dimensions or higher, is one in which the probability is proportional to the square of the amplitude.* *> there is no evidence that the Schrodinger equation itself "evolves the > amplitude", * *I don't know what you mean by that. At different times in different places Schrodinger's equation says the quantum wave will be different, and so will be its amplitude. * * > The idea of "branch weight" is just a made-up surrogate for assuming a > probabilistic interpretation; namely, the Born rule.* *We know from experiment the Born Rule works, everybody agrees about that, but Copenhagen, Pilot Wave and Objective Collapse don't even try to explain WHY it works, they just take it as a starting assumption; but Many Worlds doesn't , it can explain WHY the Born Rule works. Also Many Worlds can explain why we need to use probability even though the Multiverse is deterministic (because Schrodinger's equation is deterministic); it's because of self‐locating uncertainty, until you open the box you lack the information needed to know if you're in the world where the cat is alive or the world with the cat is dead.* *John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis>* 4n1 -- 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 visit https://groups.google.com/d/msgid/everything-list/CAJPayv19aEyJZk_RnGa2fV%3DrQMwOr99UgNo3Rw1TPzN0tMAOhw%40mail.gmail.com.
