So soon as the capitalist regime, in this sense, comes in, it ceases to be true that the owner of the industrial equipment (or the controller of it) in any given case is or may be the producer of it, in any naive sense of "production." He is under the necessity of acquiring its ownership or control by some other expedient than that of industrially productive work. The pursuit of industry requires an accumulation of wealth, and, barring force, fraud, and inheritance, the method of acquiring such an accumulation of wealth is necessarily some form of bargaining; that is to say, some form of business enterprise. Wealth is accumulated, within the industrial field, from the gains of business; that is to say, from the gains of advantageous bargaining.[7] Taking the situation by and large, looking to the body of business enterprise as a whole, the advantageous bargaining from which gains accrue and from which, therefore, accumulations of capital are derived, is necessarily, in the last analysis, a bargaining between those who own (or control) industrial wealth and those whose work turns this wealth to account in productive industry. This bargaining for hire--commonly a wage agreement--is conducted under the rule of free contract, and is concluded according to the play of demand and supply, as has been well set forth by many writers. On this technological view of capital, as here spoken for, the relations between the two parties to the bargain, the capitalist-employer and the working class, stand as follows. More or less rigorously, the technological situation enforces a certain scale and method in the various lines of industry.[8] The industry can, in effect, be carried on only by recourse to the technologically requisite scale and method, and this requires a material equipment of a certain (large) magnitude; while material equipment of this required magnitude is held exclusively by the capitalist-employer, and is _de facto_ beyond the reach of the common man. A corresponding body of immaterial equipment--knowledge and practice of ways and means--is likewise requisite, under the rule of the same technological exigencies. This immaterial equipment is in part drawn on in the making of the material equipment held by the capitalist-employers, in part in the use to be made of this material equipment in the further processes of industry. This body of immaterial equipment so drawn on in any line of industry is, relatively, still larger, being, on any exhaustive analysis, virtually the whole body of industrial experience accumulated by the community up to date. A free draft on this common stock of technological wisdom must be had both in the construction and in the subsequent use of the material equipment; although no one person can master, or himself employ, more than an inconsiderable fraction of the immaterial equipment so drawn on for the installation or operation of any given block of the material equipment.