Gilbreth studied the methods of various bricklayers—the poor workmen and the best ones, and he stumbled upon an astonishing fact of great importance and significance. He found that he could learn most from the lazy man!
Most of the chance improvements in human motions that eliminate unnecessary movement and reduce fatigue have been hit upon, Gilbreth thinks, by men who were lazy—so lazy that every needless step counted.”
Another important thing Gilbreth noted was that the so-called expert factory workers are often the most wasteful of their motions and strength. Because of their energy and ability to work at high speed, such men may be able to produce a large quantity of good work, and thus qualify as experts, but they tire themselves out of all proportion to the amount of work done.