Jeet Kune Do was developed by Bruce Lee, and according to Lee, it is a style and not just an nebulous concept. Bruce Lee in one of his many essays stated: "Jeet Kune Do favors formlessness so that it can assume all forms and since Jeet Kune Do has no style, it can fit in with all styles". It was statements like this that led the public in general to think that Lee's system was non a style but more of an idea of how to fight. But in the contrary at his three schools he hammered his students on technique and form, and even had a training manual that clearly stated "the style of Jeet Kune Do."
If JKD is a concept, what can we say about JKD techniques? Bruce Lee had a number of principles that led him to perform techniques in certain ways, with unique and effective modifications. Perhaps the most substantial of these principles as they apply to techniques and his fighting style are "closest weapon to closest target" and "shortest distance to a target". More commonly this principle is known as strong side out. Bruce Lee and JKD practitioners also preferred to lead with the "strong side foreword". So while JKD is a style, or a body of styles molded and changed according to Lee's needs in scientific street fighting, primarily, there are several techniques that are unique to JKD.

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