And if you take the sum of all of your flips, if you were to give yourself one point if you got ahead every time, and if you would take the sum of them, as you approach an infinite number of flips, you approach the normal distribution. And what's interesting about that is each of those trials, in the case of flipping a coin, each trial is a flip of the coin, each of those trials don't have to have a normal distribution. So we could be talking about molecular interactions. And every time compound x interacts with compound y, what might result doesn't have to be normally distributed. But what happens is if you take a sum of a ton of those interactions, then all of a sudden the end result will be normally distributed. And this is why this is such an important distribution. It shows up in nature all of the time.