You’ve no doubt heard the advice to stop doing “non-essential things” or to trim the services you offer as a way to bring increased focus to your management and your business. But it’s hard to know what to cut. Everything seems to have some value or you wouldn’t have done it in the first place. Leidy Klotz, a professor of engineering and author of Subtract: The Untapped Science of Less, suggests running an experiment, which he calls a “reverse pilot.” Unlike a regular pilot project, in which you temporarily try something new, a reverse pilot calls for temporary subtraction. Just stop doing something for a bit, says Klotz, and see what happens.