The ordinary conception, which makes price the social estimate put upon goods, has to the superficial judgment the attraction of simplicity. A good A whose market price is L100 is not only ten times as dear as B whose market price is L10, but it is also absolutely and for every one ten times as valuable. In our conception the matter is much more complicated.... Price alone forms no basis whatever for an estimate of the economic importance of the goods. We must go further and find out their relation to wants. But this relation to wants can only be realised and measured individually.... And the question how it is possible to unite those divergent individual valuations into one social valuation, is one that cannot be answered quite so easily as those imagine who are rash enough to conclude that price represents the social estimate of value.[12] Sax, likewise, expresses his dissent:-- Da fuer die exacte Forschung die Psyche einer fabelhaften Collectiv-Personlichkeit nicht existirt, so kann der Ausgangspunkt unserer Untersuchung auch wieder nur der Individualwerth sein.[13] Whatever the worth of the conception of social value, it is not the same as the Austrian theory. It is proper to remark here that these strictures of the Austrian writers are probably directed, not against Professor Clark, but rather against the social use-value concept as it had appeared in Germany, in the writings, say, of Rodbertus, and of Adolph Wagner, who accepts Rodbertus' notion.[14] It may be well, at the outset, for the writer to define his own position briefly. We shall find the notion of social marginal utility, and the companion notion of social marginal cost (considering the latter as a "real cost," or pain-abstinence cost, concept), unsatisfactory and unilluminating. Social marginal utility, as a determinant of value, cannot be the marginal utility of a good to some particular individual who stands out as _the_ marginal individual in society, nor can it be an average of individual marginal utilities, nor a sum of individual marginal utilities, nor any other possible arithmetical combination of individual marginal utilities, if our conclusions are true. For the term, social marginal utility, we can find only a vague, analogical meaning, if any at all, unless we identify it outright with social value, in which case it is a superfluous term, which itself not only explains nothing, but rather presents complications which call for explanation. We shall find no use for the social utility concept in our analysis. On the other hand, we shall find the conception of social value a necessity for the validation of economic analysis, and a conception which present-day psychological and sociological theory abundantly warrant us in accepting.