ACCEPTANCE OF NEW THEORY 137 In addition to this need for families of three children, the fundamental question, it was also pointed out, was not really a statistical one. Statistical averages included young married couples with as yet few or no children and also married couples with all their children grown and fully self-supporting. The question, however, concerned rather the average size of the average family at a particular, but very important, point in their career. It also embraced the opportunity for a single man to be able to be married and to pass successfully over this acutely stressful period of family development. As to the ability of industry to pay a living wage, it was shown further by careful analysis, based on the Reports of the Census Bureau and the National Bureau of Economic Research, that the output of industry was sufficient to pay all unskilled workers a living wage, and also corresponding increases in differentials to those above the grade of unskilled laborars. [n this connection, it was emphasized further that the living wage was concerned solely with adult male heads of families, and that it did not directly apply to women or children gainfully employed ; to proprietors and others engaged in business of their own; to professional people, to those engaged in anti-social work, or to chronic idlers or incapables. With these fundamental reservations in mind, it was then shown that, according to the United States Census of 1920, there were 41,609,192 persons, 10 years of age and over, engaged in various gainful occupations, but after sliminating the classes described in general above to which the living wage would not apply—women, proprietors, officials and managers, children and appren-