Social Value: A Study in Economic Theory, Critical and Constructive. Benjamin M. Anderson

himself: he has a personal affection for it, and it is immensely useful to him: it has two hundred units of utility to him, and to give it up means two hundred units of sacrifice: but he needs the forty dollars pressingly: it has two hundred units of utility to him. Is marginal utility equal to value here? If so, marginal utility to whom? But this does not exhaust the difficulties of the analysis—if the analysis be designed to show anything except what a particular price is, and the utility theorists, when very careful, do not always claim to do more than that.[47] But price is not value.

      We take up now, as an additional point designed to show that marginal utility to an individual is not the same as value, Professor Clark's clean-cut analysis amending the Austrian theory which we shall call "Clark's Law."[48] A detailed statement of this law is not necessary here, but its main meaning may be outlined, and its demonstration left to Professor Clark himself. Any good, except the poorest and simplest, is a complex, giving several distinct services. Thus, an automobile gives the service of transportation (a cart would do that); of comfort (a spring-buggy, with top, would do that); of elegance and social distinction (a carriage would do that); of speed and exhilaration (only an automobile can do this last, and the others as well). Now each of these services Professor Clark considers as a distinct economic good, and he constructs a demand curve for each of them. The service of transportation would be worth $5000 to the marginal buyer of automobiles, if he could not get it for less, but then, he is not the marginal user of carts, and he gets the cart service for what the marginal buyer of it pays, say $10. The comfort element would be worth $3000 to him, but he is not the marginal buyer there, and he gets it for what the marginal buyer of buggies pays for a buggy, less the $10 for the mere transportation-service of the buggy, say $100 less $10, or $90. For the service of elegance and social distinction, he would pay $4000, but then he does not have to do so, for he is not the marginal buyer of carriages, and he gets this additional service for $800, less the price of the preceding two services, or less $100. For the additional service of speed and exhilaration he is the marginal demander, and his margin fixes the price, say $2000, for that service. Now his automobile—and he is the marginal buyer, and he buys only one—gives him satisfaction far in excess of that measured by the price he pays for it. The automobile, economically considered, is several distinct services bundled together, worth to him $5000 plus $3000 plus $4000 plus $2000. But he pays for the automobile only $2800, or less than he would have paid even for the first service. Now by the Austrian definition the price of anything is determined by its utility to the marginal user. And marginal utility is the total utility of the marginal unit consumed. The total utility of this marginal automobile, to this marginal user, would balance $14,000 in his mind, and this, by the Austrian analysis, ought to be the price. But the price is $2800. Marginal utility determines price? Marginal utility to whom? Not to the marginal buyer! To whom, then? Professor Clark says, to society, without further defining what he means by that, except in general terms of social organism, etc. But it seems to me clear that, except on the basis of some such conception, we shall have to give up the idea that marginal utility determines price, and say rather that price is something with which marginal utility has something to do! And the quantitative relation between the feeling of any individual and value has become very uncertain indeed.