Note 187 — Chapter XVI

It might be possible to put the argument into terms which would give an analogical meaning to "social utility" and "social cost." The diagram representing the intersection of the demand curve and the supply curve, fixing price, may be taken equally well to represent the balance of social forces which lies back of the market phenomena in the case of a given commodity. The demand curve might then be called a "social utility" curve, and the supply curve a "social cost" curve, if only it be remembered that cost and utility here have only a vague, analogical meaning, and cover up a host of factors which, while they fall conveniently into two opposing groups, like the individual's "cost" and "utility," are yet much more than the latter. But they are really so very much more than the latter, that it seems to me misleading to continue the use of the terms, utility and cost, when the associations of these terms in economic theory are remembered. The tendency would be to make the student feel that value depends on two abstract phases of social-mental life, instead of being an outcome of the organic whole.