(July 3, 2013 at 9:25 am)bennyboy Wrote: Let's say you are working with QM. You say it's deterministic, but unknowable. I happen to know that there's a high-level physicist on this site, and I believe he will disagree with that (i.e. I remember him having said something in the past that I think disagreed with that).
"High-level" lol.
Heisenberg's uncertainty principle states that we cannot know precisely both the speed and position of any given particle....
But... just because we can't measure it, it doesn't mean that the particle can't be at a given location and with a given velocity... does it?
Well, all particles must have some length, so a precise position is a strange concept, unless you go for the position of the center, where QM gives you the maximum of the wave function... which tends to be the same.
However, on a slightly less nanoscopic level, these uncertainties become a bit less pronounced and statistics takes over... the averaged wave function gets interpreted as a probability distribution and you get a very accurate (as far we've been able to measure it) probability for each state of the particle.
And, armed with those probabilities, you can determine the what's going to happen and how often.
But what do I know? I'm just a low-level physicist...
