So in this situation, what just happened? Now we don't know the entire covariance, we only have one sample here of this random variable. But what just happened here? We have 1 minus, so we're not going to calculate the entire expected value, I just want to calculate what happens when we do what's inside the expected value. We'll have 1 minus 0, so you'll have a 1, times a 3 minus 4, times a negative 1. So you're going to have 1 times negative 1, which is negative 1. And what is that telling us?