Currently there more than a few instances where the bunkai, or application for katas, which one has learned is not practical. This may not be a problem for beginners, but after one has trained for a while, or if they have trained in other martial arts many may have questions about whether certain bunkai are really applicable or not. Even if one learns from a great master, if the bunkai is not applicable, what they have learned is merely a dance, and has no meaning as a martial art.
So, why are there techniques, which cannot be used? I believe we have to accept the possibility that the bunkai itself is incorrect. If one accepts that fact, then even if one practices for twenty to thirty years, it is makes sense that they will still be unusable. This would the same if one were to practice a Chinese character beautifully, but incorrectly, for many years; one would not be able to communicate the correct meaning to someone else.
Practicing incorrect characters is the same as practicing incorrect techniques. One will not be able to overtake one’s opponent. If an instructor teaches incorrect techniques, the people who have learned from him will have wasted a lot of time and energy. In the case of case incorrect explanations, we can assume the following.
1. One hasn’t been taught.
2. One has been taught incorrectly.
1. One Hasn’t Been Taught.
Actually there are many instances where one knows the movements of a kata, but doesn’t know the bunkai. It is also possible to pass a black belt examination by only performing a kata by itself. As a result, there are many instructors who do not know the bunkai for katas, and those instructors produce instructors like themselves again and again. There are some who say that even if one hasn’t been taught bunkai, if they practice long enough, they will be able to figure it out on their own naturally. In fact, though, as I previously mentioned, even if one practices a kata for a long time, if it is incorrect, they will not be able to use it.
2. If One is Taught the Bunkai Incorrectly.
In olden times, one would be at a disadvantage if their techniques were seen by others. Perhaps the same was true when karate was introduced to the mainland and the Okinawan karate masters decided to only teach the most basic katas. In other words, they were influenced by the so-called traditional Japanese practice of Mongai fushutu or Isshi Soden (Not letting the body of knowledge to be known outside the school, or passing on the body of knowledge only to one’s own child.)
Okinawan karate was no exception from other martial arts in that only those who were deemed of sufficient character were allowed to begin training. Other than a teacher putting himself in a disadvantageous position, there were two reasons for that. First, since they were teaching potentially killing techniques, it was necessary to determine whether or not the student would act violently. Second, it was necessary to judge a person’s character in order to prevent that master’s teachings from being leaked to the outside.
When Okinawan karate, which became strictly disciplined in such a manner, was taught in schools after the Meiji period, there were bound to be problems with teaching such dangerous techniques to the general public. Thus there was a need to protect the core teachings while opening it up to the public. There arose a need to make a distinction between “regular students” and “technically advanced students”.
Martial arts on the mainland developed a system of beginning level, intermediate level, and advanced level, so that the regular student could continue learning techniques, while not showing the advanced or hidden techniques to the general public.
Compared to that, Okinawan karate had no such system. It is believed that the masters changed the techniques or changed the explanation in order not to openly teach to beginners or regular students.
Until now, it has been written in karate articles that certain movements were changed or abbreviated on purpose. This may account for unusable katas.