Bruno Marchal wrote:
On 09 Apr 2015, at 01:16, Bruce Kellett wrote:
One can get as much by adding a few random numbers to any mix. Your
'many worlds' have nothing to do with Everett.
Well, if they differ, then either QM is false or comp is false. But it
is the whole point: to make thing precise enough so that we can compare
them.
If you see already that they are different, please give the proof.
As far as I can tell, your 'many worlds, or FPI' comes from the
observation that infinitely many copies of any particular conscious
moment are generated by the dovetailer. These occur in different
environments, with different continuations, hence FPI. In comp there is
no dynamics relating the different possible continuations of the moment,
and there is no connection with measurement or measurement outcomes --
the indeterminacy applies to every conscious moment.
In the Everett of MWI interpretation of QM, you have a deterministic
wave equation (the SE) which determines the evolution of the wave
function. In a measurement interaction, the wave function is expanded in
terms of the complete set of eigvenvectors of the measurement operator.
Each term in this expansion corresponds to a particular eigenvalue as
the result of the measurement. Decoherence then means that interaction
with the environment leads to the diagonalization of the corresponding
density matrix. So what were once interfering terms in an expansion in
Hilbert space evolve into separate worlds, in each of which a different
measurement result obtains.
I do not see any relationship, or even any real similarity between these
two models, apart from the fact that they both give indeterminacy in a
deterministic model.
Bruce
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