I have seen some controversy among this question and would very much appreciate it if somebody is able to give a good straight answer (if possible) with some proof to back it up. Does true randomness exist in the universe at a subatomic, higher or perhaps lower level? This is in perspective to the universe in a sense, not random meaning that we just don't understand all the variables that constitute an outcome. A truly random outcome that no matter how much knowledge and data that is available, it is impossible to predict? EDIT: I think this would be the right section for this question, but am greatly sorry if it is not.