On 12 May 2012, at 22:54, meekerdb wrote:
On 5/12/2012 6:20 AM, scerir wrote:
A few quotes below to dualism from Max Velmans.
Evgenii
H. Kragh ("Dirac: a Scientific Biography", Cambridge U.P., 1990)
reports
a 1927 discussion between Dirac, Heisenberg and Born, about what
actually gives rise to the so called "collapse" (reduction of waves
packet).
Dirac said that it is 'Nature' that makes the choice (of measurement
outcome).
Born agreed. Heisenberg however maintained that, behind the
collapse,
and the choice of which 'branch' the wavefunction would be
followed, there
was "the free-will of the human observer".
I don't think this does justice to Born's views. He was not a
realist about the wave function nor about its collapse. His
position was that the classical world was logically prior and
necessary for shared knowledge to exist. Without it there could be
no measured values and no records.
I agree. Born was very cautious in making interpretations. Here, you
can see that he was very coherent with comp, which at some level,
accept "classicality" (the level of elementary arithmetic, that Born,
and many people still miss, but at least he was coherent).
Still, if you read his correspondence with Einstein, you can see that
he is still avoiding the hard questions, but then it is normal to do
that, and he does not entirely hide the fact that he does not (try) to
interpret the facts and theory. this is probably why he got the
probability idea, which of course no doubt it was fertile, even if
after Bell, it means something like QM is wrong or there is a
multiverse.
Bruno
Brent
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