Habrán notado los lectores que nuestros columnistas más jóvenes tienen preferencia por la macro. Es hora de plantear un desafío y, reivindicando la micro, cambiar un poco de tema.
Va uno. Dice Rothbard en Man, Economy & State (p. 130, edición LvM Institute):
«Contrary to what might be thought at first, the concept of ‘elasticity of supply’ is not a meaningful one, as is ‘elasticity of demand’…. The reason is that its other determinant, quantity supplied, changes in the same direction as the price, not in the inverse direction as does quantity demanded. As a result, supply is always ‘elastic’, and the concept is an uninteresting one.»
Por otro lado, dicen Heyne, Boettke & Prychitko en «The Economic Way of Thinking», p. 90:
«The concept of elasticity is every bit as important in the case of supply as it is in the case of demand.»
«Pause for a moment to be sure you have understood the concept of price elasticity of supply. As we shall see in the next chapter, it is the relative elasticities of supply curves and demand curves that determine what effects changing circumstances will have on the quantities of goods exchanged and the prices at which they exchange».
Entonces?