Prosperity has really come to mean a rate of advance rather than a state of affairs." This observation by Mr. Henry Dennison is one of the profoundest ever made. At the bottom of every mechanical movement is a source of power--motor or prime mover. The engine at the bottom of the rate of advance in American productivity is the new science of management. It is management which has brought the motor car to blossom like the lilies of the field. It is management which is behind the whole mass production movement. It is management which is steadily stepping up output per worker, decreasing prime costs, flooding the country with new goods, displacing labor with the machine. This chapter will be devoted to an examination of management. We drop for the moment our appraisal of the shares of classes and of individuals in prosperity, to glance briefly at one of its central fires--perhaps the central fire.
First let us recapitulate the actual accomplishments of management. If the total physical production of the United States be taken as 100 in 1919, the gross output has grown since then as follows: