Quoting one his students, David Oddy, "I've been on the receiving end of his practice and believe me, you try to resist and move away. The reason you don't see much response is because his movement is designed to maintain initiative and keep you on the defensive. He doesn't land blows because you (hopefully) know the pattern well enough to block everything, but with less experienced uke, you will find that the pattern doesn't finish because blows are landed - once blows are landed it comes to a close very quickly as it should. For example, if you were to see him try the pattern on me (even as someone who kind of knows it) you wouldn't see it in its entirety. Why not? Simply because I couldn't keep up with the defense and the fight would end in the first couple of moves. However, the established pattern would let him press the advantage and keep initiative until that happened. This is VERY relevant against an untrained attacker as karate is designed for."