And I think you already do have the sense that every trial you take, if you take 100, you're much more likely, when you average those out, to get close to the true mean than if you took an N of two or an N of five. You're just very unlikely to be far away, right, if you took 100 trials as opposed to taking five. So I think you know that, in some way, it should be inversely proportional to N. The larger your N, the smaller standard deviation. And actually, it turns out it's about as simple as possible. It's one of those magical things about mathematics. And I'll prove it to you one day. I want to give you a working knowledge first.