In Random Training Note #6 , I noted that:
Evasion is: Perception + Agility.
To elaborate further, perception is cognitive processing of sensory input, and is crucial to both attack and defensive skills. Fast and accurate perception depends upon having a large vocabulary of relevant experiences for cognitive processes to compare to incoming sensory input. This perceptive processing may be consciously directed or below conscious thought. We have multiple systems of sensory input, yet much of martial arts training relies on only the visual realm. This may be fine for the optimal, controlled conditions of the average dojo/club etc. However, surprise attacks, or those involving multiple people will likely present other types of sensory input, such as tactile contact or acting on “bad feelings” about a situation or person. Visual perception will not help against threats that cannot be seen or on conditions that prevent clear sight. Learning to perceive and act upon these is a critical skill for fighting and self-defense.