The hook: Unlike other teachers, Bender takes a biomechanical approach to the golf swing. In every era, golf instruction is usually based on having students emulate the best players of the day. Bender, however, says physics provides a better model for a swing that’s as efficient, as repeatable and as timeless as that of Iron Byron, the PGA robot that tests clubs and balls. As he puts it perfectly: would you rather fly in an airplane that was built by engineers who understood the principles of lift and acceleration; or would you rather fly in one built by people who simply went out to the airport and watched them taking off and landing –