When quantum physics developed along with it's principles of uncertainty of space and movement at a quantum (sub-atomic level), that is, quantum particles only have a probability (chance) of being in a certain position at any given time--Einstein rejected this wholeheartedly and tried to find away around it, but couldn't. He is quoted as saying something like, "God doesn't throw dice." But all physics since then seems to show that God does like to throw dice, and he does so at every chance he gets.