He felt these were universal combat truths that were self evident, and would lead to combat success if followed.
Familiarity with each of the "Four ranges of combat", in particular, is thought to be instrumental in becoming a "total" martial artist.
JKD teaches that the best defense is a strong offense, hence the principle of an "intercepting fist".
For a person to attack another hand-to-hand, the attacker must approach the target.
This provides an opportunity for the attacked person to "intercept" the attacking movement.
The principle of interception may be applied to more than intercepting physical attacks.
Non-verbal cues (subtle movements that an opponent may be unaware of) may be perceived or "intercepted", and thus be used to one's advantage.
The "Five ways of attack", categories which help JKD practitioners organize their fighting repertoire, comprise the offensive teachings of JKD.
The concepts of "Stop hits & stop kicks", and "Simultaneous parrying & punching", borrowed from épée fencing's and Wing Chun's concepts of single fluid motions which attack while defending, comprise the defensive teachings of JKD.
These concepts were modified for unarmed combat and implemented into the JKD framework by Lee, to complement the principle of interception.
