We met Aaron Levy over coffee a while back to talk about theory. Levy, if you don’t know him, is the executive director of Slought Foundation, the gallery and event space with intellectual chops just on the edge of the campus of the University of Pennsylvania. He’s also a curator and, what we didn’t expect to hear, a red diaper baby. He grew up in a dialectical vegetarian household that didn’t celebrate holidays, and at age 30-something he’d just been to his first Thanksgiving dinner, with friends, in New York.