It does not follow that because the wage incomes of the individual laborers are high, the total relative share of the product which takes the form of wages will be high. The wages received by individual wage earners are no indication of the share of the product received by all wage earners. That depends not only on the return to each wage earner, but also on the total number of wage earners, and upon the number and return to each of the other agents of production. In China, for example, where most work is done by simple hand labor, wage incomes are low. But because the number of wage earners is great, and the amount of capital used is very small, the total share of the product that takes the form of wages is high. The opposite is true in the United States and England. There individual wage incomes are relatively high. But because of the great amount of capital employed, and the great call for business direction, it is doubtful whether much more than half the total product is received by wage earners.[23] 7.--Moreover, any statement as to the influence of the relative scarcity or plenty of the various groups or agents of production, as unqualified as that just made must be incorrect. It gives no clew to the importance of interacting factors. Here, as elsewhere in economics, many separate causes meet to produce a result. The disentanglement of their effects is frequently so difficult as to make more than an approach to the truth possible. The part each cause plays often remains somewhat obscure. Yet without reckoning with these interactions not even an approach to the truth is possible. So it is necessary to proceed now to a brief study of the other influences which play a part in distribution; and which lead to results somewhat different from those just described.