One poster wrote his motivation for studying the martial arts was to be able to defend himself without hurting someone. And this was echoed to some extent by an Aikido practitioner I met who told me that in Aikido he was taught that if you have to fight you have already lost. Is it indeed possible to avoid hurting an attacker without being hurt? Well, if you can run faster I could see that happening. Could you somehow dodge, evade, move out of the way of blows to cause somebody to give up in frustration? Could you perhaps put somebody in a wrist lock or some such restraint and stop the attack through restraining someone? Well, I would say it depends on the situation. I don't personally believe in every situation one could defend himself without hurting the other person, that indeed, doing moves that would hurt the other person would be necessary at times, perhaps the vast majority of the time. What do you think, can you defend yourself without hurting your attacker?