As to hinging action this is only a reaction in a golf swing and can also be controlled by how the upper body is rotated or by how a player wishes to release the right hand/arm
I am curious what geometry, or physics (the so-so variety will suffice) you can produce to substantiate the above quote. Pretending that there is a hinge embedded in my left shoulder, vertical to one of the three planes works quite well! I am curious what principle of TGM has technology managed to debunk up until now. I really want know. I was shushed a while back when I tried to inquire about the guy that had Manzella frothing at the mouth... Dr. Z. There may be an odd thing here or there that may beg better description, but I think the Three Impertives are unasailable...everything else...who gives a flip.