hope this question is of interest and deserving an answer. its just something i have been mulling over for the last 20 years. i have always thought of the hips as the booster jets on the side of the space shuttle to help it gain speed at the lift off. IE, the hips start the action and theoreticly push the arm and smaller muscles from behind. then the arm engages to continue the action. my old sensei thinks differently. i was hoping to hear what Art thinks and could explain his views on this very fine timing. is there a better way?