I did not call him "Fritz." To me he remained always "Professor Hayek," despite his own graciousness in treating me as a peer. I shall not attempt to evaluate Professor Hayek's monumental contribution to our understanding of the events of this turbulent century, to the influence of his ideas on these events themselves or even to the development of economic theory in a strictly scientific sense.
The hard core in public choice can be summarized in three presuppositions: (1) methodological individualism, (2) rational choice, and (3) politics-as-exchange.
A version of the old fable about the king's nakedness may be helpful here. Public choice is like the small boy who said that the king really has no clothes. Once he said this, everyone recognized that the king's nakedness had been recognized, but that no-one had really called attention to this fact.
Economics is the study of the whole system of exchange relationships. Politics is the study of the whole system of coercive or potentially coercive relationships.
In 1987, the United States celebrates the bicentennial anniversary of the constitutional convention that provided the basic rules for the American political order. This convention was one of the very few historical examples in which political rules were deliberately chosen.