*BEEEEPPPPP*
"We'll stop right here, son," Kiritsugu interrupted. "That was a ****ing terrible punch! In Taijutsu, it is important that you are always specific in what you do. Because the human body is unique as of itself, and there are so many forces going around us at once (law of physics), it is necessary to remember and write down what you do during a physical fight.
If I were to punch you, I'd say specifically that I aimed my knuckle toward your sternum and your rib, compressing it against the heart, instantly crushing your heart and giving you a heart attack.
I will teach you several vital places on the body as we progress through the training, but you must always keep in mind..." He paused a moment, magically whipping out a whiteboard as he wrote three standards on it:
1. Your opponent's field of sight.
2. How much power you put into your punch.
3. What and how did you hit your opponent?
"Being specific," concluded Kiritsugu. "Allows less arguments to happen and for more deliberate moves to happen. Now, try again, Bobo!" He created another clone.