On 11 Dec 2017, at 23:15, Bruce Kellett wrote:
On 12/12/2017 1:12 am, Bruno Marchal wrote:
On 10 Dec 2017, at 23:38, Bruce Kellett wrote:
On 11/12/2017 2:19 am, Bruno Marchal wrote:
On 09 Dec 2017, at 00:03, Bruce Kellett wrote:
On 9/12/2017 4:21 am, Bruno Marchal wrote:
Similarly, a shroedinger car, once alive + dead, will never
become a pure alive, or dead cat. It will only seems so for
anyone looking at the cat, in the {alive, dead} base/apparatus.
Superposition never disappear, and a coin moree or less with a
precise position, is always a superposition of a coin with more
or less precise momenta. The relation is given by the Fourier
transforms, which gives the relative accessible states/worlds.
I pointed out that for a macroscopic object such as a coin, the
uncertainty relations give uncertainties in positions and/or
momentum far below any level of possible detection.
Of possible practical detection. That is good FAPP, but
irrelevant for theoretical consideration.
This is a purely rhetorical objection, Bruno. And when you trot
this out, as you do regularly, I know that your purpose is to
obfuscate, and hide the fact that you have no rational argument to
offer.
You confuse physics and metaphysics. The difference is not
rhetorical, but fundamental in this thread.
Rubbish. The central point of contention on this thread is whether a
coin toss can be regarded as a classical event, with probabilities
given by ignorance of the initial conditions, or as a quantum event
with probabilities given by purely quantum uncertainties.
This is a straightforward question of physics, and has nothing to do
with metaphysics. As usual, you introduce the term 'metaphysics'
merely to obfuscate, because you have no intelligent response to the
clear physics of the situation.
I was using "metaphysics" in opposition to your instrumentalist FAPP
distraction. Metaphysics and/or theology involves the question of the
existence of the universe(s), parallel or not.
Then you make ad hominem insult in place of argument. I guess your
goal is not to enlighten me.
Bruno
Bruce
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