The relation of the leisure (that is, propertied non-industrial) class to the economic process is a pecuniary relation--a relation of acquisition, not of production; of exploitation, not of serviceability. Indirectly their economic office may, of course, be of the utmost importance to the economic life process; and it is by no means here intended to depreciate the economic function of the propertied class or of the captains of industry. The purpose is simply to point out what is the nature of the relation of these classes to the industrial process and to economic institutions. Their office is of a parasitic character, and their interest is to divert what substance they may to their own use, and to retain whatever is under their hand. The conventions of the business world have grown up under the selective surveillance of this principle of predation or parasitism. They are conventions of ownership; derivatives, more or less remote, of the ancient predatory culture. But these pecuniary institutions do not entirely fit the situation of today, for they have grown up under a past situation differing somewhat from the present. Even for effectiveness in the pecuniary way, therefore, they are not as apt as might be. The changed industrial life requires changed methods of acquisition; and the pecuniary classes have some interest in so adapting the pecuniary institutions as to give them the best effect for acquisition of private gain that is compatible with the continuance of the industrial process out of which this gain arises. Hence there is a more or less consistent trend in the leisure-class guidance of institutional growth, answering to the pecuniary ends which shape leisure-class economic life.