And the skew and kurtosis, these are things that help us measure how normal a distribution is. And I've talked a little bit about it in the past, and let me actually just diverge a little bit, just so it's interesting. And they're fairly straightforward concepts. Skew literally tells, so if this is, let me do it in a different color. If this is a perfect normal distribution, and clearly my drawing is very far from perfect, if that's a perfect distribution, this would have a skew of 0. If you have a positive skew, that means you have a larger right tail than you would have otherwise expect. So something with a positive skew might look like this.