[lamchopz]

That's the wonder of quantum mechanics. We know all of the answers until we are asked the questions.


(Just a joke, of course, sort of a Schrödinger's exam...)

I just like all your jokes. Seriously. LOL

Last semester, we studied the wave model of particles. In calculating the phase speed, the maths told us that it was faster than the speed of light, which our current understanding says is impossible. However, the group speed, which is consequential to that phase speed, turned out to be correct, which is the observed speed of the particle in classical physics. Quantum mechanists usually don't question why we have such an odd phase speed because all of the experiments conceivable (in order to see if this is true) will be affected by Heisenberg's Uncertainty Principle and rendered useless. We have the correct group speed and everything works, to a remarkable level of precision. We're happy.

EDIT: No, not really (in case people didn't see my sarcasm). We aren't happy but there's not much else we can do. Because quantum mechanics works and gives us results, we still use it until another better comes along.