Re: Ki and power and cooperation
I would guarantee Tohei was 'thrown' and that Ueshiba was too. Don't see it as a measure at all of anything really.
Cooperation has degrees and thus all training and practice has degrees of such so to me has nothing to do with resistance ie: seeing resistance as the opposite to cooperation.
The only power I know as basic is the power of truth and thus the unmoving power of universal principles which everything follows. The result of which is harmony.
Ki follows those principles and is in itself non resistive to everything else and it is up to the individual to discover these things bit by bit.
So in conclusion you must learn to cooperate with the universal principles and Ki to realize true power.
Quite a path, quite a challenge, divine.