Quote Originally Posted by gwahir View Post
It doesn't, strictly speaking... probability is in fact just a method we have by which to predict what is definite. When we say there's a fifty-fifty chance of something happening, that's incorrect: there's either 100% chance of it or no chance at all.
By what logic? The fact that it may come up heads or tails does not mean that there was a 100% chance of this happening from the very beginning; it simply means that it happened.