Structure
All martial arts have a specific structure. It is this structure that makes their art work. To understand any martial art you must first look at its structure. You can think of structure as a base of operations from which the attacks and defense of a particular art spring from. Structure is the base from which the art grows from. Structure is the roots from which the branches of the art spring from. To understand any art is to understand its structure. Bruce Lee said that to defend against another art, you don’t need to learn that art, but you must be able to understand its delivery system. The delivery system is the means by which the attack comes from point A, (the attacker) to point B (the defender). To a great extent this delivery system is based on the structure of the art of the attacker while the defender bases his defense on the structure of his art.