And this is the standard deviation, which is this distance. So this in here tells me how many standard deviations I am away from the mean, and that's actually called the standard z-score I talked about in the other video. And then we square that, and then we take this to the minus 1 half, well, let me rewrite that. If I were to write e to the minus 1 half times a, that's the same thing as e to the a to the minus 1 half power, right? If you take something to an exponent and then take that to an exponent, you can just multiply these exponents. So likewise, this could be rewritten as, this is equal to 1 over the square root of 2 pi sigma squared, which is just the variance. And I'm just playing around with the formula, because I really want you to see all the ways that it, you know, maybe you'll get a little intuition.