 If we haven't convinced you that the atmosphere that's sitting on your head is pushing down with a great deal of force, I want to show you one more thing. I have a piece of screen wire here. This is just regular screen wire and an Erling Meier flask. I'm going to fill it about three-fourths full of water, and then I'm going to invert it and remove my hand. And notice the screen wire stays and the water stays up in the Erling Meier. If we lift it high enough and look right here, you'll see that in the little squares of the screen, the water is actually concave. That gives us evidence that the force is pushing in, not pushing out.