I believe every player must have a basic understanding of how the ball flies (Ball Flight Laws). When a golfer hits a ball, the initial direction the ball takes off on is controlled by the angle of the club face. The path of the club to the ball in relation to the face angle impacts the spin or curvature the ball has. Without the understanding of these laws, a barrier is created making the game of golf more difficult for the player.
There is a set of standards a player must have to play good golf. Great golfers today, and throughout history have appeared to swing the club many different ways. Just about all of these players demonstrate different grips, different postures, different alignment, and different swing lengths. Yet, all successfully play the game. This is because all of these players demonstrate a set of standards. They are all able to hit the ground in the same spot consistently. They are also able to maximize their total distance without losing the consistency of hitting the ground in the same spot and they able to control the direction and curvature of the golf ball. Understanding that these three standards are fundamental and organizing the variables of them into a system that is simple enough for a beginner and detailed enough for the most sophisticated player allows for the fastest improvement for all golfers. I am also a huge believer of utilizing technologies like high-speed cameras, TrackMan, SAM Putt Lab, AMM3D, and many others. These technologies are important for measuring the motion of the golfer and the motion of the ball. They help golfers develop correct feels by distinguishing what they are actually doing from what they think or feel they are doing.