“From Taylor and his associates, on the one hand, and Allen, Bruere, and Cleveland, on the other, there extends a firm resolve to enlarge the domain of measurement, an unbroken missionary endeavor to extend the suzerainty of "the facts." The pioneers began with inquiries into the proper speed of cutting tools and the optimum height for garbage trucks; their followers seek to place large segments of social life or even the whole of it upon a scientific basis.”