On Tuesday, November 19, 2024 at 5:08:36 PM UTC-7 Brent Meeker wrote:




On 11/19/2024 3:12 AM, PGC wrote:

Your critique of MWI as "bad taste" because of its proliferation of worlds 
is understandable, but for me, collapse is far stranger and less intuitive. 

But the "collapse" is still there for you in MWI.   As far as anything you 
can observer or experience or measure a single possibility occurs and this 
is explained by the action of decoherence splitting your world away from 
the other possibilities.  The only difference is whether you imagine those 
other worlds as existing or you say that probabilities mean one is realized 
and the other's are not.  If *you don't say that* then you will have 
trouble saying what those probabilities refer to.

Brent


PGC doesn't realize that the so-called collapse perfectly describe what 
happens in a measurement process; except for the measurement which is 
realized, all other probabilities converge to zero, and the realized 
measurement converges to 1. IOW, the wf converges to a delta function. So 
collapse per se, isn't the problem. Rather, the problem is how the 
measurement process occurs; how it happens; what governs the process? This 
is the real mystery; not the collapse, which just correctly describes at a 
top level, what happens. AG

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