On 12-12-2017 02:41, Brent Meeker wrote:
On 12/11/2017 4:54 PM, smitra wrote:
As I have said before, the biggest challenge for quantum physics
is to
explain the emergence of the classical world from the quantum
substrate, so that classical calculations actually get the
correct
answers in those classical situations. If you do not believe that
these classical calculations are correct, then I advise you not
ever
to drive your car on a busy road.....
There is no way a Hilbert space can become a classical
configuration space. If one sticks to a falsified theory (in the
domain where you can hide the shortcomings under the carpet) and
cast doubt on a theory that has withstood rigorous experimental
tests, then it's likely that attitude that's the cause of most
problems.
That's what I mean by logic chopping. Everything is quantum
therefore every uncertainty is quantum uncertainty...therefore all
insurance companies should be studying Hilbert space. This overlooks
the fact that the classical world is far better empirically supported
than the quantum world and there is consistency between quantum
mechanics and our theory of spacetime. It is like Bruno's argument
that starts with the assumption that his theory is correct in order to
prove that fundamental physics (whatever that is) is wrong.
That's like saying that biology is far better empirically supported than
chemistry in the biological world and that therefore when chemistry
suggests that some effect should in principle exist in a biological
system but it is difficult to measure, we're just going to ignore that.
And, of course, biologists are not so well versed in chemistry.
Saibal
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