You CAN’T control a movement, you CAN only control the intention behind it!

The visible mechanical aspects of sports are only byproducts of a multilayered totality. Everything is influenced by life experience, including movement. 

The perfect, repeatable technique is therefore an illusion because no athlete is able to do 2 identical movements in a row, let alone on different days!

Because of all the parameters, you need to do that specific movement, you don’t have access to!  You have only global access to the movement, but NOT in detail!

If we teach a movement the outcome can be completely different than we thought, because everybody transforms things completely differently.