Sec. 11. The economic demands which make up the budget of a particular person at a particular time are clearly interdependent. A man's income or the greater part of it is usually distributed among various channels of expenditure in a certain fairly constant way. In proportion to the definiteness of this distribution and the resoluteness with which it is maintained does the impression gain strength that the man is carrying out a consistent plan of some sort. Such a regular plan of expenditure may be drawn out into a schedule, setting forth the amounts required at a certain price for the unit of each kind. And such a schedule is an expression in detail, in terms of ways and means, of the type of life one has elected to lead. For virtually any income above the level of bare physical subsistence, there will be an indefinite number of alternative budgets possible. A little less may be spent for household conveniences and adornments and a little more for food. Some recreations may be sacrificed for an occasional book or magazine. One may build a house or purchase a motor-car instead of going abroad. And whichever choice is made, related expenditures must be made in consequence for which, on the assumption of a definite amount of income, compensation must be made by curtailment of outlay at other points. What seems clear in general is that one's total budget is relative to the general plan and manner of life one deems for him the best possible and that this plan, more or less definitely formulated, more or less steadily operative, is what really determines how far expenditure shall go in this direction and in that. The budget as a whole will define for the individual an equilibrium among his various recognized wants; if the work of calculating it has been carefully done there will be for the time being no tendency to change in any item.