2.--The distribution of the product of industry between the wage earners and the other groups who share in it is a continuous process in which each group asserts its own interests and purposes. Wages are settled through a series of separate bargains between the wage earners and the owners or directors of industrial enterprises. The outcome of these bargains, as regards wages, is determined by the interaction of a great number of circumstances or forces, some of which are relatively more constant and more important than others. We will begin our study of wage principles by considering those forces which are relatively the most important and the most constant. These have been cogently summarized as follows: "... the volume of the flow of wealth in the country of the worker; the relative plenty or scarcity of different agents of production; the relative plenty or scarcity of different kinds of labor."[12] They may be taken up in the order stated, at the same time noting the way their action is modified and complicated by other factors. One preliminary comment may be admissible. It is to the effect that there has been in the past a tendency to view the problem of distribution (and so, of wages) as if it consisted of making clear by analysis the balance or equilibrium of a few given and unchanging tendencies--which were deduced from human and physical nature. These forces furthermore, were frequently held to be universal; the conclusions based on them have often been likened to physical laws. Such a view obscures the fact that any analysis of distribution is but a description of the working of a particular industrial society at a particular time. To mistake what is a description of a particular society for a study of the action of physical laws has the effect of leading men to believe that the present must forever reappear in the future. 3.--The first factor, "the volume of the flow of wealth in the country of the worker," was never more under discussion than to-day, when from all sides demands are heard for the material means necessary to the realization of desires. As the matter is ordinarily put, the greater the product of industry is, the more there is for distribution among all. The truth of this statement seems obvious. Yet in interpreting it into policy more than usual care must be taken lest it be forgotten that other things may make a larger contribution to satisfactory living than an increase in these possessions which make up the flow of wealth. Instances are by no means lacking of increases of production obtained at the sacrifice of something more important to human life than the additional product secured. There is a "mean" here also between labor and leisure.