Peter Zalinski wrote:
1) If a technique is properly executed, active resistance causes more pain and possible injury for uke: Examples: nikyo, sankyo, hiji-gimi, or most any properly executed lock. Why condition your ukemi reactions to encourage self-destruction?
In order to learn to do the correct kaeshiwaza, Peter. To learn proper kaeshiwaza, you need to let Nage take you to your absolute limits before you begin the kaeshiwaza. To do that, you have to attain greater flexibility and greater resistance strength. Remember Tohei Akira Sensei telling us to not begin resisting the Kokyu-dosa until Nage just about had us tipped over, then to resist as hard as we could? Waiting till that point increased our flexibility and strength at the limits of our abilities. Resisting earlier was just a waste of energy for Uke because you weren't really developing yourself. Likewise, you should be resisting the Nikkyo just at the point where Nage has you in a good Nikkyo and is starting to drive you to the ground, then start the resistance against the pain, so that you can do the Sutemi-waza or the Kokyu-nage Kaeshiwaza.