Thanks. A perfect example of the outright weirdness of quantum phenomena. I read the first section of that paper ("Why quantum chaos?"), and its proposition m

Thanks. A perfect example of the outright weirdness of quantum phenomena. I read the first section of that paper ("Why quantum chaos?"), and its proposition makes no sense to me. None other than Poincare PROVED (proved!) ages ago that the motion and position of just three little points attracted to each other according to Newton's formulas are extremely sensitive to infinitesimal changes in their initial motions and positions (i.e., the system is chaotic in the classical sense). And as you point out, the world is full of cases that demonstrate such hyper-sensitivity. Yet, according to this paper, such a system is impossible in nature. I don't get it. Instinctively, I have to believe there must be a more fundamental underlying explanation for this and other apparent contradictions... it's just that at the moment no one knows what this explanation might be.