Hi Brent,
On 8/4/2011 1:44 PM, meekerdb wrote:
On 8/4/2011 9:41 AM, David Nyman wrote:
Hi Stephen
Thanks for the link - very enjoyable talk. As far as I could follow
it, he seemed to be saying that the differentiation of decoherent
"worlds" is in the final analysis a "psychological" matter - i.e. that
quasi-classical "reality", as ordinarily experienced, is consequent on
the selection of particular "best-fit" or "most fruitful"
interpretations of functional or structural features of the underlying
micro-physical state-of-affairs.
I don't see how life (including us) could exist except at a
quasi-classical level. Evolution needs reliable replication to work
with. Given that we evolved as quasi-classical beings, it follows
that our perception, psychology, and interaction with the world must
be quasi-classical.
Brent
Exactly what does the 'quasi-classical" property imply and what
does it bring to the table that is not in the quantum realm? Is it
persistence of structure? How does the unitary evolution of the wave
function not provide that? In fact, the quantum realm seems to even be
over-determinative in the sense that no only is one 'actual' real state
of affairs of a world non-contradictorily exists in the amplitudes of
the wave function but all possible versions of it.
While it is true that we seem to observe only one Boolean logic
representable slice of the totality of what is coded in the amplitudes,
it can easily be shown that this is just something like one subset of
the set of all of the Boolean representable 'possible worlds' that we
see coded in the amplitudes.
I simply do not comprehend this emotional clinging to a classical
vision of the world; especially given the fact that it is demonstrably
false! It seems to me that your argumentation is just an attempt to
preserve your apparent belief in naive realism.
Onward!
Stephen
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