I was just wondering. I have been looking all over for an answer to this question but I can't seem to find any. I read a biography about Einstein recently and it said that when quantum mechanics first came about he said (something like): "I will not deny its usefulness, only the conclusions people draw from it. God does not play dice with the world." Another time he said something like, "to a man that does not understand lightning, determining just where it will strike is impossible, he would only be able to observe and estimate the probability of it striking one place or another." Can't this apply to quantum mechanics? Or is there some way to prove that what happens at the quantum level is completely random? Couldn't we just be observing the effects of some force we do not know about and cannot describe?