On Thursday, April 28, 2022 at 11:49:03 PM UTC+3 meeke...@gmail.com (Bent) wrote:

> In unitary evolution per the Schroedinger equation there are no "paticular > universes", there's only a ray in Hilbert space. Multiple universes is a > FAPP viewpoint. But so is wave-function collapse. > I am glad to agree with this. Now, the challenge for the MWI is to derive apparent collapse and the Born Rule (in the long run) from the approximate description "multiple universes". Also to explain, in what sense this approximation is good enough. The trouble with assuming an actual collapse-with-randomisation is the need for some mechanism for it, as I gather you too remark, in other words. I admit though that, starting with collapse-with-randomisation, it is easy to explain "FAPP". Probabilities are whatever measures satisfy Kologorov's axioms or their > logical equivalent. The information interpretation is QBism. > Formal properties are not enough to explain probabilities as a guide to life. George K. -- 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/055d3092-0099-43dd-b804-0734f8c29485n%40googlegroups.com.