From performing the technique you learn What options are and are not viable. You learn how your opponent's body Will react to different strikes and locks, And how to flow from one technique to another. From receiving the technique, You learn respect for the technique And for the art. You learn how to avoid the technique, And how to set up counter-attacks. Learning how to receive a technique Vastly improves the performance of the technique.
Myriad indeed are the things to be learned From but a single technique.
It is sad to see how many martial artists Truly think that they are well prepared To face an attacker with murderous intent. They naively believe that their flying side kick will allow them to subdue their attackers. They confuse tournament sparring With actual combat experience. They believe that their style of martial arts Is the best there is for self-defense. But it's not entirely their fault.