This is where I post my academic articles and lectures, mainly from my time teaching at Duke and Penn. Most of my research has focused on collective action problems. I'm also interested in how demographic changes drive the rise and fall of civilizations.
My current research is on the ethics of genetic enhancement, especially embryo selection for complex traits.
“I love all those who are like heavy drops falling singly from the dark cloud that hangs over mankind: they prophesy the coming of the lightning, and as prophets they perish" ~Friedrich Nietzsche (1883)