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Mindlessness And The Law, Paul J. Heald, James E. Heald

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No less an authority than Milton Friedman has argued that improving the realism of assumptions in economic theory, although hardly essential to establishing the absolute validity of the theory (purely an empirical question), may offer several benefits. First, a “restructuring” (to use Posner's term) of an assumption may help explain divergences between predicted and observed results. Second, an explanation of why a seemingly unrealistic assumption does not destroy the predictive value of a theory may strengthen the theory by connecting it to “a more general theory that applies to a wider variety of phenomena . . . and has failed …