[YodasLuke]

What I cannot understand is what relevance these "facts" really have with respect to the golf swing. I never sense the hosel rotating around the sweetspot-PP#3 axis in a golf swing. I can only sense the clubface closing and opening, and it "feels" like the clubface is rotating around the clubshaft axis.

Any reasonable person could "feel" the same thing. But, reality is a different thing. They are very close in feel. But, the Clubshaft is not the center of rotation. The reality is that the hosel (extension of the Clubshaft) is not always tracing the Delivery Line.

Let's examine each example:

1. The Clubshaft traces the Delivery Line and the Clubshaft is the center of rotation.

This results in aiming the hosel at the ball, with obvious consequences. In this example, the hosel would remain on the Delivery Line before, during, and after Impact. The Sweet Spot would rotate around and outside the ball and the hosel would hit the ball.

2. The Clubshaft traces a parallel line that's inside the Delivery Line and the Clubshaft is the center of rotation.

In this example you'd have to be a proponent of tracing a line that doesn't extend through the ball. The Sweet Spot would have to rotate out and around the hosel. I'm seeing a windshield wiper type of effect, just like in the previous example. The force vectors are terribly scattered.

3. The center of rotation that extends through the COG traces the Delivery line.

Here, the Sweet Spot is being Delivered to the ball. This is the obvious choice for solid contact. The hosel approaches the ball on the same Plane with the Sweet Spot, but it rotates away from the ball (counter-clockwise) as the center of rotation moves down the Delivery Line.

Do something for me, and I'll promise that it will help you to see the options. You need to see the center of rotation. Take short iron and tape a piece of string to the Sweet Spot and to the #3 Pressure Point. This is your new 'shaft'. Trace the Delivery Line with every option that I listed, above. Then, let me know what you find.

It is my present belief that the reason why I harbor this "belief" is that I presently believe that natural human biomechanical actions dictate opening of the clubface opening in the backswing and clubface closing in the downswing/followthrough, and that these actions have no necessary causal connection with the idea of there being a axis between the sweetspot and PP#3. However, I am open to new insights.

I'm not opposed to this idea of this utopia. But, if it was so 'natural', I wouldn't see the walking disasters that hit balls at my public range. They're doing what seems 'natural' to them.