If I had to do something like, whoop, okay, pick up my pencil, not continuous anymore. So this is what a functioning that is continuous what the closed interval AB looks like. I can draw some other examples. In fact, let me do that. So let me draw one, maybe where F of B is less than F of A. So that's my Y axis, and this is my X axis. And once again, A and B don't both have to be positive.