|From:||Chris Menzel <chris.menzel@xxxxxxxxx>|
|Date:||Sat, 26 May 2012 12:28:55 +0200|
On Fri, May 25, 2012 at 4:35 PM, Michael Brunnbauer <brunni@xxxxxxxxxxxx> wrote:
Sorry, I have no idea what you are trying to suggest. I believe in the history of medicine it's never been the case that there was anything indeterminate about whether or not the victim of a fatal stroke or heart attack was alive in the 30 minutes preceding the event.
If have talked with someone that has a bit more background on this and he said that in fact *most* physicists would agree that the fact of life or death of the cat in Schrödingers experiment is established by opening the box. That the cat can itself be regarded as observer or replaced with a human shows that you cannot get the subjectivity easily out of the theory.
I'm out of my depth in this area as well, but I did say that realism is only problematic (if it is at all) in contexts where quantum and relativistic effects are relevant. Schrödinger's cat is such an example, despite the fact that it appears to have consequences in the macroscopic world. Remove that part of the story and you've just got a fact in which you find a kitty, dead or (hopefully) alive when we open the box and we can with complete confidence assume that it was in that state before we opened it. You can play skeptic, of course, and I suppose we have to acknowledge that we can't know with absolute Cartesian certainty that the situation in the box was clear, definite and determinate before we opened it, but the Newtonian hypothesis that it was works perfectly well for describing it and will remain so until there is more evidence of quantum effects in the macroscopic world beyond thought experiments.
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