REACTION OF CONSUMPTION ON PRODUCTION § I. REACTION UPON MATERIAL PRODUCTIVE AGENTS [Sidenote: Essential mark of the consumption of goods] 1. _Economic consumption is the enjoyment of the utilities which wealth is capable of affording._ All wealth looks toward consumption. To take away the prospect of the enjoyment of goods is to take away all their value. Consumption involves generally the using up of a thing. Food is consumed quickly, clothing more slowly, and houses wear out after many years. The using up is, in some cases, due to the forces of nature, and is not hastened by enjoyment. A house goes to ruin more rapidly if uninhabited than with a careful tenant; clothing is destroyed more quickly by moths than by wear. The use of many goods that give esthetic pleasures, as art, painting, sculpture, and the enjoyment of fine scenery or of beautiful building sites, does not destroy the things that afford the pleasure. The idea that all value originates in labor has led to false views on this question. The essential mark of consumption is the using of the income as it arises, not necessarily the using up of the material agents that afford it, though this frequently occurs as well. [Sidenote: Consumers' choice as influencing value] 2. _The kind of consumption affects the value of material agents._ Each buyer helps to determine the use of productive agents. The control of purchasing power means the potential control of industry to that degree. It was necessary in discussing the enterpriser to recognize that the buyer eventually dictates the direction of industry; the enterpriser seeks to produce that for which there is most demand. A change of taste affects the value of natural agents. An increase in the demand for meat affects the value of wheat and potatoes, and also the land used for producing them. A change in the national diet may be equivalent to the discovery or to the destruction of half a continent. If one chooses to drink wine instead of buying statuary, he increases the value of vineyards and decreases that of marble quarries: If one drinks beer, he bids for barley; if he eats candy, he may be offering a bounty for beets. Therefore, choosing vines or violets, pictures or pretzels, each with his nickel helps to determine what shall be produced. [Sidenote: Inventions influencing value] The distribution of wealth thus affects the value of agents. The wealthy spend relatively more for luxuries, the poor for food and other essentials. Where wealth and incomes are very nearly equally distributed, the demand of different families will be for much the same kinds of goods. If there were no rich men, the demand for vineyards producing fine wines would be less. The very best qualities of goods take on the highest prices when there is a small, but very wealthy, class of purchasers.