Originally posted by MisterMike
Why does there have to be a differentiation?
Because HOW you execute a movement ultimately in the long run is more important than the movement itself. Ask all the guys who have shoulder and hip surgery. Only martial artists do "style conceptually interpreted" movements over and over and tear their body's up because they are perhaps expeditiously or "athestically proper" but not anatomically correct.
Pro basketball players shoot hundreds of thousands of jump shots over their lifetime, without a need for shoulder surgery, because they only do it ONE WAY. The anatomically correct most efffcient way.
So the differences and differentiation in teaching execution is monumental in efficiency and effectiveness, and is easy to prove. Only a superficial understanding suggests no need for a "difference."
Ed Parker told me a story while teaching after a similar question from me:
A guy ran a stop sign and almost hit another vehicle. They both stopped, and got in an argument. "Why didn't you stop?" the guy said. The other guy said, "I slowed down." The first guys said, "The sign says STOP not SLOW." The other guy replied, "Stop or slow, what's really the difference?"
The first guy jumped the second and threw him to the ground, and leaped onto his chest, and begin punching him in the face as hard as he could. After five or six punches he stopped and looked at the bloodied man and asked him a question. He said, "Now, do you want me to slow down, or stop."
Trust me, there is a HUGE difference in the real world, except in some interpretations of American Kenpo. The shortest route may be a straight line, but not always the best or most effective or efficient.