In a performance-based profession, you acquire a new
skill mostly by practicing. A pianist learns a new piece
of music by playing it over and over, not just by listening to it or studying it. A golfer masters putting by
practicing that skill on the course hundreds or thousands of times, not just by watching a video of someone
who can already putt well. Emergency medical technicians don’t just read about giving injections and using
external defi brillators; they practice using them. In
professions like these, getting it—understanding a new
skill—is not the same as actually doing it.