What you want is fine for you... but what about what others that are not so science oriented want, which might be to hear HOW John does what he does & what makes him such a great banker of the ball.
Why must that be killed for the sake of 'science'?
You keep saying this over and over, that science killed the teaching. First, there hasn't been any fancy science, just more videos and requests for videos of balls curving. That's what JB posted in the first place. And he agreed that his video was ambiguous and said he would try again. Second, JB was not going to teach how to bank or curve on AZ. He has videos that he sells and he gives paid lessons. If people want to learn how to bank, they should pay JB, not expect him to post his lessons for free.