For a Kenpo movement to be really internalized to the degree that it will manifest during an aggressive, assault requires a degree of training beyond memorization of mimicked movement. The repetition of a combative motion without a realistic catalyst will ingrain several dangerous bad habits. While these bad habits all overlap and cause one another I will divide them up to draw attention to each of them. 1) Unrealistic Speed - because the catalyst is moving at an unrealistic speed, you are synchronizing your action to the wrong beat and develop bad timing when you have to face a realistic speed. 2) Unrealistic Commitment - when the catalyst lacks destructive commitment the engagement (structural) pressure on contact is light, your structure remains unchallenged and thus can become neglected, when encountering a truly destructive commitment, a break down in structure occurs, destroying balance and the launching platform. The true recovery time is not accurately ingrained and responses are trained that would be impossible when the structure is under real pressure. 3) Unrealistic Distance - if the catalyst is out of range such that even if you did not move, it would not do anything more than graze your skin or maybe not touch you at all, your own response will be unrealistic, you will have space to maneuver that you would not have in reality and you will have to compensate for the gap if you are to enter into a realistic distance, if you ingrain combative movement from unrealistic distances, you will find much of your arsenal reduced in effectiveness when you inevitably respond as you have trained. 4) Unrealistic Aggression - while safety is important, feeding your training partners catalysts that lack realistic aggression will condition them to deal with movements absent aggression, when at last they encounter aggressive behavior it can become a distraction that obscures the movement of the enemy. More importantly speed, commitment and distance coupled with attitude (emotion) are elements of aggression that will all be off if training against Unrealistic Aggression. Progressive training is important but not an excuse for unrealistic catalysts. Contrary to some people's excuses you can start training your students against realistic catalysts from the very beginning because they too can be progressive. The nature of the attack is the controlling mechanism, just select realistic catalysts that don't require excellent timing for beginners, such as grabs, pushes, hugs and holds and build up to more percussive and demanding catalysts. Above all fix your catalysts so your not slipping out of the way of an attack that would not have even reached you or working a sequence against a suddenly frozen statue. Remember that it is YOUR life that is on the line or the life of YOUR loved ones, don't role play the warrior embody the real deal.