On 12/4/2017 8:34 AM, Bruno Marchal wrote:
On 04 Dec 2017, at 04:34, Russell Standish wrote:
On Mon, Dec 04, 2017 at 02:11:11PM +1100, Bruce Kellett wrote:
On 3/12/2017 9:03 am, Russell Standish wrote:
The point being that the uncertainty in the coin's initial position is
itself due to the amplification of quantum uncertainty by classical
chaos.
That may happen in some cases, but just looking at the numbers says
that
normal thermal motions will far outweigh the effect of any residual
quantum
uncertainty. In most cases where the Lyanpunov exponents lead to
classical
chaos, there is more than enough classical thermal uncertainty in the
initial conditions so that any residual quantum uncertainty is
irrelevant.
But surely, classical thermal uncertainty is just due to amplification
of quantum uncertainty by means of molecular chaos.
Indeed. Bruce seems to introduce a continuous collapse in the picture.
That classical thermal uncertainty can only augment the number of
terms of the superposition. It amplifies the chance of getting a
superposition of the outcomes.
But the fact that you can construct a coin flipping machine and you can
train yourself to flip a coin so consistently that it's outcome is
predictable implies that the neither the atmospheric thermal
perturbations nor the quantum fluctuations produce world splitting.
Brent
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