So you always take an x and a y for each of the data points. Let's say you have the whole population, so every x and y that go together with each other, that are a coordinate, you put into this. And what happens is, let's say that x is above its mean when y is below its mean. So let's say in the population, you had the point, so one instantiation of the random variables, you have, you sample once, I guess, from the universe. And you get x is equal to 1, and that y is equal to, let's say y is equal to 3. And let's say that you knew ahead of time that the expected value of x is 0, and let's say that the expected value of y is equal to 4. So in this situation, what just happened?