RE: tautology

From: Niclas Thisell <niclas.domain.name.hidden>
Date: Thu, 9 Dec 1999 16:48:14 +0100

Marchal wrote in part:
> George Levy wrote:
>
> >I agree that there is a problem with the conventional
> concept of the MWI
> >which support an asymmetrical view of time. According to
> this concept,
> >branching generates an ever increasing number of worlds and
> identities. ID
> >splitting is allowed but ID "merging" is not. Yet I find much more
> >satisfying
> >to believe in a time symmetrical world in which spitting and
> merging occur
> >with equal frequency.
>
> Difficult remark. Perhaps we need a satisfying relativistic
> account of
> MWI.
> But we don't even really got a satisfying relativistic QM.
> Even with 'just' comp, merging is important. I agree. It is also the
> existence of merging which make the search for a measure so much
> difficult.

How could the definition of measure be difficult with quantum mechanics?
Obviously, we simply define the measure of a world (a point in
infinite-dimensional Fock-space) to be the absolute square of the
wave-function. In my opinion, the concept of splitting and merging only
serves to confuse (as indicated by your discussion :-).

Best regards,
Niclas Thisell
Received on Thu Dec 09 1999 - 07:43:21 PST