Competitive markets and “as if” methodology
Two results showing the limitations of the “as if” methodology are proved under relatively mild assumptions. In an interpretation of the results, a competitive market cannot simulate the outcome of a market M in which the single price assumption does not hold. In a second interpretation, the market M resulting from the aggregation of a finite number of competitive markets is not competitive. In both cases there is no ground to sustain the fiction that M operates as if it were competitive.
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- Boland, Lawrence A, 1979. "A Critique of Friedman's Critics," Journal of Economic Literature, American Economic Association, vol. 17(2), pages 503-22, June.
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