On 12-05-2022 22:27, Brent Meeker wrote:
On 5/12/2022 11:42 AM, smitra wrote:
All that the experiments demonstrate is that the wave function
evolves
unitarily between state preparation and measurement. This is most
easily accounted for by assuming that the wave function is a
purely
epistemic vehicle for the time evolution of probabilities. Since
it is
purely epistemic, collapse is not a problem since it is not a
physical
event. One does not have to go the whole way to QBism -- the wave
function can still be objective (inter-subjectively agreed).
That's possible but that means that QM is not a complete fundamental
theory of reality. Anything that explains these probabilities is
then possible, including the existence of a multiverse.
Which is about as explanatory as "God did it." Explaining the values
of the probabilities isn't the problem with MWI, it's explaining that
there ARE probabilities even though nothing happens, and when and
where the probabilities arise.
I agree with what John Clark said in his reply.
To add to that, the "God did it" thing applies far more to the CI,
because there one postulates the collapse without explaining the
mechanism for it. In the MWI one assumes that the appearance of collapse
can be explained from the known dynamics. Those explanations may not be
satisfactory as of yet, but that's typical for most of science. There
are phenomena that as of yet are not well explained, but that does not
(necessarily) lead us to postulate new physics all the time. Doing so
would make us like creationists who tend to invoke a "God of the gaps".
Saibal
Brent
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