視野の狭さは心の狭量さ。The narrowness of the field of view is the narrowness of the mind.

動画はMartin Wheelerさんです。この後ろへの打撃に関しては沖縄空手を学び始めた頃ピンアン三段の最終の動きに同じような動きがあり、肩口後方への打撃？無いでしょ？と勝手に一撃でのダメージに捕われていた頃はそう考え感じていました。要は打ってる感がないんです。この動画を見れば一目瞭然ですね。恥ずかしい限りです。

The video is Martin Wheeler. Regarding this batter to the back, when I started learning Okinawa Karate, there was a similar movement in the final movement of Pinan 3rd Dan, and was it a batter to the back of the shoulder? Isn't it? I felt that way when I was caught in the damage of a single blow. In short, I don't feel like I'm hitting it. It's obvious if you watch this video. As long as it's embarrassing.