Well, I know that on a scale, a probability of 0 is impossible while a probability of 1 is certain. I do have some things down, but just in case, can anyone here please give me a list of what kinds of events are impossible (0) and what events are certain (1)? I would really appreciate it. EDIT: And I don't mean card games or dice, but things like sports, cosmic events and natural phenomena like earthquakes and weather. EDIT: Also, one more thing; What are the odds of a normal human doing some kind of feat that is superhuman in terms of superhuman strength, speed, agility and such? Is that impossible?