In the early days, there was a big focus on capital. Accumulating human capital is perhaps at least as important as physical capital. I think part of it is because the quality of that human capital wasn't really very good. And we've learned that many economies like that were doing things very badly.
Russ Roberts interviews Robert Barro, Harvard University Professor and Hoover Institution Senior Fellow, on the economics of growth, what the developed world can do to help poor people around the world, and the role of US assets and the dollar in world finance.