G is just so pervasive in life. And if you start thinking about what it is, it's not so surprising that it has such widespread effects on mortality even, and health in later life. So it is a very important variable. And i've been interested in education, and in education, there's really a antipathy towards intelligence. Yet, no teach can stand in front of a classroom of kids and not know what intelligence is. It's kind of allisein wonderland, thing about people denegrating intelligence. I just don't get it. And i'm less patient with it now than i used to be. Aha, i have a funny story for you. When