Surely the object of training is to make it work?If you think otherwise why waste your time doing waza which may or may not work?Do you just shrug your shoulders on a failed waza and say to yourself 'Try , try again and maybe I will succeed next time out'? If my waza does not work , I get
pretty miffed at myself.Cheers, Joe.
The object of training is to improve your aikido. If your technique works, but for the wrong reason -- for instance because you are much stronger than your partner and just forced your way through -- then you haven't improved your aikido and may have made it worse by reinforcing a bad habit.
If a technique doesn't work, in contrast, that's an opportunity to think about why not and try to fix whatever flaw you discover.