Contrary to widely held beliefs, microeconomic theory bears no rela tion to the size of the product under consideration; indeed a micro theorist can just as easily discuss the sale of a whale as he would discuss a whale of a sale in amoebae. In fact, it possibly is true that a theorist, and a microeconomic theorist in particular, does not have any specific products in mind when he bandies his propositions about. Nor does he have to. For these in the final analysis are just that; propositions. They are propositions that are motivated by economic reality as observable, not to mention...