I have been spending much of this week (well sort of; those who know me better know that I have had much more important things to take care of this week...) teaching in an executive program that the Center for International Development at Harvard runs for economists at the World Bank and other multilateral organizations. Ricardo Hausmann, Rohini Pande, Chuck Sabel (from Columbia), Abhijit Banerjee, and Sendhil Mullanaithan are some of the other faculty who teach in this weeklong program. The attendees are fairly senior people, so the discussions are lively. I am amazed at how some of the new thinking on self-discovery, growth diagnostics, binding contrains, and experimentation is being absorbed within the World Bank and the donor community more generally. But the question is: can you really practice "different strokes for different folks" in institutions that are used to uniformity?