I learned that Aikido is effective as a form of self defence when you maintain all the principles at the same time not just one or two at a time but all of them. 아직 모든 원칙을 어떻게 적용해야 할지 모르겠지만 시간이 지나면 알게 될 거라고 확신합니다. As a martial artist I need to work on this.