_Further Complexities which may be Disregarded._--One man may be in several of the general groups. It is possible, for example, that he may furnish raw materials which enter into more than one finished article. Iron is so extensively used that it goes into more products than can easily be counted. The man who digs iron ore contributes to the making of bridges, rails, locomotives, buildings, machines, ships, and tools in indefinite number and variety. The price of each of the articles into which any of this material goes contains in itself the price of that part of the raw material which goes into it. There is steel in a ship, and the maker of that part of the output of raw steel which goes into a ship gets his pay from the price of the vessel; and so with the crude metal which goes into a bridge, a building, an engine, etc. What the producer of a material gets from each source tends, under perfectly free competition, to equal in amount what he contributes toward the value of the corresponding article. In terms of our table a miner may furnish ore from which iron is taken for the making of both A''' and B'''; and if so, when the distributive process analyzes these products into their elements, the value of what he has in each case contributed will fall to him. He will be paid according to the help he has afforded in the making of the A''' and the B''', and this fact does not change in principle the manner in which the income of society is divided. If the man helped to make only one thing, he would get a part of the price of that one thing; but if he helps to make several, he will get a part of the price of each of them. Each group has one grand function to perform, such as the making of an A''', and if the man helps in more than one, and is paid accordingly, his total pay is according to the amount he produces in all the different functions he performs, and the principle of distribution works as perfectly as it would if the man were confined to the single subgroup A. For simplicity we assume that he is so. _The Functions of Capitalist, Laborer, and Entrepreneur often performed by One Person._--One person may perform several functions, not only by contributing to the products of several groups, but by contributing in more than one way to the product of one subgroup. He may, for example, both labor and furnish capital, and he may, further, perform a special cooerdinating function which is not labor, in the technical sense, and scarcely involves any continuous personal activity at all, but is essential for rendering labor and capital productive. What this function is we shall presently see. We shall term it the function of the _entrepreneur_, using this term in an unusually strict way. We shall keep this function quite distinct from the work of the superintendent or manager of a business.