Hardy's earth-shattering philosophy is quite simple. Everything you've learned about swing fundamentals is wrong. There are two sets of fundamentals to the swing, not one. There is the one-plane swing and the two-plane swing and they are completely opposite in nature. When a player mixes elements from both swing types a breakdown will occur. Every player falls neatly into one of these two categories and one of them is guaranteed to work for you. Understanding these concepts is crucial to your improvement, and Hardy breaks them down into easy-to-follow steps, complete with numerous drills.