to what he has called the "contractarian revival," the renewed interest in and emphasis on the metaphor of the social contract in evaluating political alternatives. He believes that genuine constitutional dialogue must take place in this country if America is to remain a free society and that the perspectives of an economist are valuable in the discussion of basic issues of social philosophy.The author critically examines the basic alternatives for social order: anarchy, natural law, historical determinism, and revealed reason. He rejects each of these and opts instead for "freedom in constitutional contract." In this stance he is explicitly constructivist, holding the view that reform in constitutional-legal rules or institutions is possible.Reform or improvement in such rules is determined, however, by conceptual contractual agreement or consensus and not by external ethical norms. Further, the choice among alternative sets of rules, alternative "constitutions," is categorically distinguished from attempts to suggest policy norms within an existing set of rules. In developing his analysis, Buchanan critically analyzes recent contributions by John Rawls, Robert Nozick, F. A. Hayek, Michael Polanyi, Frank H. Knight, and other social philosophers

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