Butch Harmon is the world's number one golf coach. He taught Tiger Woods through one of the greatest stretches of victories in golf history (and, perhaps even more conspicuously, did not teach Tiger Woods following his unprecedented run), as well as superstars like Greg Norman, Adam Scott, Fred Couples, Darren Clarke, Natalie Gulbis, and Davis Love III. How did he become such a legendary teacher and mentor? The answer is simple: He learned from watching...