O sistema de preços

"We must look at the price system as such a mechanism for the communicating information if we want to understand its real function ... It is more than a metaphor to describe the price system as a kind of machinery for registering change, or a system of telecommunications which enables individual producers to watch merely the movement of a few pointers, ..., in order to adjust their activities to changes which they may never know more than is reflected in the price movement. Of course, these adjustments are probably never "perfect" in the sense in which the economists conceives of them in his equilibrium analysis. But I fear that our theoretical habits of approaching the problem with more or less perfect knowledge on the part of almost everyone has made us somewhat blind to the true function of the price mechanism and led us to apply rather misleading standards in judging its efficiency." F. A. Hayek, "The Use of Knowledge in Society," AER (September 1945)

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A função do sistema de preços