I find this post by Duncan Green about the direction of the field of Economic Development especially interesting because I know people on both sides of this debate. I met Lant Pritchett when he was in graduate school at MIT and I was at Harvard since we were both in the same Mormon congregation at that time, and my wife Gail and I have kept up with Lant and his wife Diane to some degree in the years that followed. On the other side of the debate, several of my colleagues are involved in randomized controlled trials in the developing world.