[brianmanzella]

I'm simply stating that the data given in the comparison are wrong. There are other factors here that lead to illusion. There is a hole at the base of the skull where the spinal cord enters called the foramen magnum. The skull is oblong (not a perfect circle) and this hole is located BEHIND an ear to ear diameter. Additionally, the bones furthest forward in the skull are the front teeth. The nose is cartilage that protrudes even farther from the center of the head. Therefore, rotation around the spine, a single axis would cause the nose, as a point of reference, to move dramatically. The Stationary Post (a players head) may turn (Pivot) but does not "sway" or "bob". And, this relationship does not look like a lollipop on a stick. The spine is not centered in the base of the skull. Rotation creates 'movement' if looking at the face. This is the lesser of the details.
The second is the ability for the head of the humerus (the top of the upper arm bone) to protract (to extend forward or the feeling of making your shoulders touch in front of your sternum). The shoulder is also on a concentric circle with the head or spine as the axis, which would be measureably further than the nose or face from the center of rotation. A common myth in golf instruction is that the shoulders turn as if they are a steel bar accross the spine. It is NOT the case. Simply measuring an angle created by the movement (turning) of the left shoulder includes no portion for range of motion (protraction) created through extensor action. Seemingly, this angle would be created by turning the shoulders as much as possible with some 'head' movement ("sway"). WRONG! You lose double Jeapordy! Without the above mentioned considerations the article referenced earlier would seem to have merit. When my left shoulder is under my chin, my right shoulder is still very visible from a front view. This means a different degree of "turn" is happening in each shoulder.
Yoda's been very busy with people coming in from out of town, and without his help, I would have never seen these things. When he has time, he will post the DEFINITIVE post on 9-1-5. I'm anxious to see it.

Wow, Teddy, none of this is in Homer's book "The Golfing Machine," His 80 hours of audio, couple hours of video or notes.

Does this mean we can use other data in debate around this place?

I will say this—this post is harder to read than the book.

Anyway, here is a little common sense and some (easy to read) hard facts:

• The Spine is NOT in the middle of the torso, nor the middle of the head.

• The center of the spine is also not in the rear of the torso, nor the head.

• You can hit a golf ball at a world-class level with many different points used as the 'center of rotation.'

• You don't hit the ball on the backswing.

• When you change the center of rotation on the backstroke, you change the path the hands take on the backstroke some, but change their path dramatically on the downswing.

• When you change the center of rotation on the backstroke, you change the path the CLUBHEAD takes on the backstroke some, but change the CLUBHEAD path dramatically on the downswing.

• The bottom of the spine, the tailbone, moves all over dodge in a Stationary Head swing, as well as a bunch in other 'center of rotation' locations. On the downswing it has to move some to tilt the axis, and that movement has more than just a toward the target dimension for some plane lines.

• The center of gravity in the body (swing) is located well below the head in the lower torso area.

• Just as MORAD states, the head movement is obviously something that influences the pattern a great deal.

The point here Teddy, is that there is libraries full of data in biomechanics and other disciplines that would really muddy the water in the search for the PERFECT 'swing.' Homer had bunch figured out, but obviously not everything.

I teach a lot of people to have a perfectly steady head, because for them it works better.

But, you and Lynn are saying you ONLY teach it one way—totally still head—which means our friend Leo Tong(zilla) went totally with LBG's teachings, he would have to HOPE and PRAY that he would be able to hit it as good with a "pivot tripod center," as he does with a different—more "spine centered" center of backstroke rotation. Because, right now, and at Canton, his RESULTS say that you are wrong.