I don't even have to go look for them. There's one right there. I think that Cornupicus, if I'm saying his name correct, Galileo and Newton are probably the three that I would associate with that idea of the scientific revolution. I know, I'm pretty sure, you know, Hughes is a U.S. history teacher, so he's doing the best he can. But Cornupicus, I'm saying his name wrong, and Galileo are really the people that really kind of zoned in on the heliocentric idea, figuring out through astronomy that there was a universe around and that Earth was definitely not the center of it. Galileo, I'm pretty sure, was forced to recant by the time he was a teacher. And then Isaac Newton, of course, is maybe the premier scientist in the concept of gravity and really figuring out how the world worked around us.