 Jeffrey Potter, the Nepal volunteer, sees limits to what development workers can do. The thing that you talk about all the time in development is you're working yourself out of a job. Success is not needing Peace Corps. He was in Nepal working on his documentary when the Peace Corps pulled out. He says that country does still face many challenges. Dwight Perkins, the Harvard economist, says that for higher-level development work, advising countries on tax reform, for example,