Once again seems all backwards to me. Training to handle someone completely in the blink of an eye without hurting them is ten times harder than training to hurt them in the blink of an eye. Thus twen times easier to hurt them too if needs be.
In my experience people actually scared to train this way. Very unmartial.
I agree 100% Graham. Controling a fast realistic attack without hurting the opponent is much more difficult than causing damage. So if you are forced to cause damage in a life or death situation then becomes easier. And if one is training like that, he also maintains the choice of hurting or not his attacker.
Yes it is very difficult to control without hurting and that's why aikido takes so long. But if you have this ability in any level you start to feel the real spirit of budo...And nothing compares to that.