329 PRODUCTIVITY solves a knotty Few men can sew a button on without making heavy weather of the job, taking long slow pulls at the needle and tangling the thread at every stitch. Why? Because they use a long thread, thinking it will save time. Tailors know better. They use short thread. It doesn't catch. Short, quick movements are easy on the arm and make a firmer job. Finding a way of getting any job done more quickly and effectively without using more effort or material is called 'increasing productivity.