In a very appreciable degree this complexion of things and of popular conceptions has changed since then; although, as would be expected, the change in popular conceptions has not kept pace with the changing circumstances. In all the characteristic and controlling lines of industry the modern machine technology calls for a very considerable material equipment; so large an equipment, indeed, that this plant, as it is called, always represents a formidable amount of invested wealth; and also so large that it will, typically, employ a considerable number of workmen per unit of plant. On the transition to the machine technology the plant became the unit of operation, instead of the workman, as had previously been the case; and with the further development of this modern technology, during the past hundred and fifty years or so, the unit of operation and control has increasingly come to be not the individual or isolated plant but rather an articulated group of such plants working together as a balanced system and keeping pace in common, under a collective business management; and coincidently the individual workman has been falling into the position of an auxiliary factor, nearly into that of an article of supply, to be charged up as an item of operating expenses. Under this later and current system, discretion and initiative vest not in the workman but in the owners of the plant, if anywhere. So that at this point the right of ownership has ceased to be, in fact, a guarantee of personal liberty to the common man, and has come to be, or is coming to be, a guarantee of dependence. All of which engenders a feeling of unrest and insecurity, such as to instill a doubt in the mind of the common man as to the continued expediency of this arrangement and of the prescriptive rights of property on which the arrangement rests.