> In their [Einstein, Podolsky, Rosen] thought experiment, two products of decay were projected in exactly opposite directions—or more scientifically speaking, their momenta were anti-correlated.
> In Einstein's thought experiment, it is possible to measure the momentum of one particle and immediately know the momentum of the other without measurement, as it is exactly opposite. Then, by measuring the position of the second particle, the Heisenberg uncertainty principle is seemingly violated, an apparent paradox that seriously baffled the three physicists.
Isn't it rather obvious that symmetry between the two particles would be disturbed with increasing probabillity as time goes on, if not randomly then at least by either measurement, especially when the two decay products are still close together? Anyway, the uncertainty for the simultaneity of both measurements would fall under Heisenberg's principle, I guess.