Author: Sune Fischer
Date: 15:34:12 08/06/02
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On August 06, 2002 at 17:19:38, Russell Reagan wrote: >On August 06, 2002 at 15:15:08, Miguel A. Ballicora wrote: > >>PS: Anyway, that is not so true because it is impossible to know all the >>variables without altered them. > >He was speaking from a purely theoretical point of view of course, since it's >impossible to measure every possible variable, and even if it were, it would >alter some of them as you said. However, that doesn't make it false in theory. > >Russell Yes it does actually. Heisenbergs uncertainty principle is a fundamental law, quantum theory doesn't work without it. To assume you could know all variables with infinite precision would be an invalid assumption, _even_ as a thought experiment. So in deep down nothing is determanistic, but on our scale the world acts differently and we can for the most part completely forget about this principle. It plays no role in the flipping of a coin, for instance. -S.
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