Improvements in methods of work have come about partly through a common sense approach, but chiefly through laboratory research. There are certain practices so, obviously wasteful of effort that one can improve them by “ wading in and doing quickly what shouts to be done.” Such improvements are only a beginning however and slow painstaking research is required for developing fundamental principles in this as in other areas. Motion study, regardless of method, has the overall objective of developing motion-mindedness in those who work. All approaches based on principles of body motion economy and body mechanics aim either to develop better motions or to eliminate motions.