For a full generation the world, like Gaul, has been divided into three parts, the rich, the poor, and the Communists. Scholars and bureaucrats have devised these economic categories, calling them the developed world, the Communist countries, and the less developed countries (LDCs). In the last few years, however, these classifications have been bursting at the seams of their logic. Even the man in the street is beginning to wonder why such nations as Saudi Arabia, Venezuela, Argentina, and Brazil are still "poor" LDCs and thus eligible for various aid programs. Visual evidence of their burgeoning wealth is available on TV and in the popular press. Yet the list of developed countries remains the same. It seems no one ever gets promoted.