Author: José Carlos
Date: 00:58:42 08/07/02
Go up one level in this thread
On August 07, 2002 at 00:15:43, Miguel A. Ballicora wrote: >On August 06, 2002 at 19:15:05, José Carlos wrote: > >>On August 06, 2002 at 18:34:12, Sune Fischer wrote: >> >>>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. >> >> ...If you accept quantum mechanics as "totally correct". Well, I don't, but >>that's way off topic. The only absolute truth we can know is that we can't know >>any absolute truth... > >I we are allowed to doubt about the correctness of quantum mechanics they I am >allowed to doubt about all the laws that Russel's professor could potentially >use to predict the weather in Michigan at any time knowing all the variables >between the sun and the earth. We're allowed to doubt about everything, aren't we? That's how progress happens, doubt about what is considered "correct" and find something better. As I said in my other response to Sune, I believe QM is a great theory, that works great from the mathmatical point of view, as it makes good predictions and is very useful. I don't "accept" (just for myself, I don't mean I want to discredit it) QM as "true" in that it describes what "really happens". Note the quotation marks because I don't mean literally what I say, but I don't know a better way to express it in english. José C. >Regards, >Miguel > > >> >> José C.
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