Simulation is an increasingly popular pedagogical device; much of the recent literature on the theory and practice of political science instruction attests to this. Probably the most popular simulation device is called model United Nations. In recent articles in Teaching Political Science and NEWS for Teachers of Political Science, William Hazelton and James Jacob have described Model United Nations in glowing terms, focusing on one particular conference and completely ignoring the rest of the 200 or more conferences held annually across the United States.Like Jacob and Hazelton, we recognize the great potential value of United Nations simulations in trying to illuminate the often confusing politics of international organizations. As former participants and directors of these programs, however, we are keenly aware of the shortcomings and difficulties associated with the existing structure of model U.N. programs.