"The problem of interpersonal comparison of utilities seems to bother economists more than philosophers. As already indicated, utility or satisfaction or any other similar concept appears in economic theory as an explanation of individual behavior, for example, as a consumer. Specifically, it is hypothesized that the individual chooses his consumption so as to maximize his utility, subject to the constraints imposed by his budget. But, for this purpose, a quantitatively measurable utility is a superfluous concept. All that is needed is an ordering, that is, a statement for each pair of consumption patterns as to which is preferred."