Die Rolle des Uke (Der Trainingspartner, der zu Fall gebracht wird)
The uke is your training partner, not your opponent. It is his job to offer just exactly the kind of ukemi that forces you to do the technique properly. There is no intention to resist, that's bad martial arts. The ukes job is to establish a solid connection to the nage's center. If nage can get kuzushi, then the uke takes the fall. If, on the other hand, nage at any point runs into uke's structure, the technique should stop dead (at the yudansha level, it should be reversed). Uke does not compromise his own structure, nage must figure out how to do that. When nage does figure it out, uke takes the ukemi. [...]
That's uke's job... to maintain his structure, to recover his posture if compromised (if possible), and to not create any tension that would be bad martially (anything that would slow him down, restrict his total freedom to react as needed, or diminish his power). Too reactive is no good, too resistant is no good.
There is no valid reason to fall down for anyone unless they make it happen. But training with the intention of stopping the other guy is just as bad. Neither results in developing the real skills that eventually would make collusion or resistance moot.
Quelle:
George S. Ledyard