 Right. And I wonder, a lot of people will find mathematics intimidating. I enjoyed mathematics until the numbers dropped off and I was now left with letters, DX, DY, and then find all these other things. And then they keep telling me to find X. By the way, do you know where X is? Did you ever find it? Yes, I'm finding it every day. I'm finding it every day. For example, when I decided to have a kid, I had to build a model in my mind. Come on. If I do this thing today, after this number of days, this is what I'm going to have.