Le lun. 17 févr. 2025, 23:13, Bruce Kellett <[email protected]> a écrit :
> On Tue, Feb 18, 2025 at 9:01 AM Quentin Anciaux <[email protected]> > wrote: > >> >> Sure, but saying “some things happen and others don’t” is just labeling >> an outcome, not explaining why probability follows the Born rule. If you >> take that as fundamental, fine, but that’s just postulating rather than >> deriving it. >> >> MWI doesn’t deny probability; it just reframes the question. The >> challenge isn’t that “everything happens,” it’s understanding why observers >> experience frequencies matching the Born rule. That’s what self-locating >> uncertainty and measure attempts to address. >> > > Self-locating uncertainty is just the question "Why am I on this branch > and not the other". I don't see that that question is any different from > the characterization of probability as "some things happen and others > don't". Self-locating uncertainty is just "Some branches matter to me and > others don't". No different. > > Bruce > Self-locating uncertainty isn't about some branches mattering more, it’s about explaining why an observer, pre-measurement, should expect to experience one outcome over another in the correct proportions The difference is that self-locating uncertainty applies before the measurement, not just as a retrospective description of what happened. In standard probability, uncertainty reflects an observer's ignorance of an outcome before it is known. In MWI, all outcomes exist, but the observer still doesn’t know which branch they will find themselves in, hence, self-locating uncertainty. Yes with the MWI everything (possible) happens, that's not in question. Quentin > -- > 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/CAFxXSLR7UxszpQX4PyKW-WfQ71KwXuF2SEGoJhOr70%2BczbWezA%40mail.gmail.com > <https://groups.google.com/d/msgid/everything-list/CAFxXSLR7UxszpQX4PyKW-WfQ71KwXuF2SEGoJhOr70%2BczbWezA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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/CAMW2kAoAHmhx9zyJgw5%3DUWSSxqhSB7OdNSDyMw3kFDN1KEyotg%40mail.gmail.com.
