On Mon, Dec 20, 2021 at 8:03 PM smitra <[email protected]> wrote: > On 20-12-2021 03:05, Bruce Kellett wrote: > > > The Born Rule cannot be derived from the Schrodinger equation; it has > > to be added as a further independent assumption. So it is not true > > that Many Worlds makes only one assumption. It requires just as many > > assumptions as collapse theories. > > > > Bruce > > Yes, but with those assumptions it yields an unambiguous framework for a > fundamental theory. In case of collapse theories, you're stuck with a > phenomenological theory that cannot be improved, because you are not > allowed to describe observers and observations within the collapse > frameworks.
I think you are stuck on a very old-fashioned view of collapse theories -- perhaps you are thinking only in terms of theories dominated by Bohr's idea of a separation between the quantum and the classical -- with the classical world necessary to give quantum results meaning. In other words, a fundamental separation between the observer and the observed. This, of course, is problematic in that you cannot describe the observer in quantum terms. But modern collapse theories, such as Flash-GRW, do not have this limitation. There is no observer/observed distinction in such theories, and they can easily accommodate the idea that everything, including the observer, is quantum. Besides, MWI is far from unambiguous. For instance, the notion of probability is decidedly problematic in Everettian theory. Bruce It's a bit like the difference between statistical mechanics > and thermodynamics, if in the latter case textbooks were to insist that > you are only allowed to consider certain types of heat engines that > operate in the quasistatic limit. > > Saibal > -- 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 on the web visit https://groups.google.com/d/msgid/everything-list/CAFxXSLQRmi9dq38z5du37BUoK_Fbha-_7vvG2FujvxYZbC9cBw%40mail.gmail.com.
