 And sometimes it's farther away, exerting less gravitational pull. And maybe we should back up a moment and talk exactly what is a tide. I think most of us know what a tide is. You have high tide when the water rises and low tide when it goes down. Is it that simple? I wish. Or maybe I don't wish. Do you wish? No, maybe I don't wish, you know, because it's so extremely poetic and beautiful the way it works. So what is a tide then?