[Yoda]

Yoda

You wrote-: "All parts. Per 1-L #6, "The [Sweetspot (which replaces the Clubshaft per 2-F)] always the points at the Plane Line except when they are parallel to each other".

From my perspective, the sweetspot and the clubshaft are on the same plane when the clubshaft is above waist level (above the third parallel).

Wherever the 'joining' (of Clubshaft and Sweetspot Planes) occurs, the Shaft has moved off its own Clubshaft Impact Plane and onto the Plane of the orbiting Sweetspot. In the 'un-joining' (Release), it moves off the Sweetspot Plane and back to its own Impact Plane.

Therefore, during the early-mid downswing, the butt end of the clubshaft points at the ball-target line (as if the club is merely a dowel stick without a clubhead). Therefore, I "feel" as if it is the clubshaft that points at the ball-target in the early-mid downswing.

You "feel" this because that is exactly what is happening. During the Backstroke, the Clubshaft and Sweetspot have become one.

From the delivery position to impact, a golfer simply performs a release swivel action that squares the clubface. I do not believe that a golfer can change his on-plane condition after the golf club has passed the third parallel position without "steering". I believe that if I am not perfectly on-plane by the time my clubshaft reaches the third parallel position, then it is too late to alter my imperfect off-plane condition.

While your words read more like a Golfer's Creed -- This I Believe -- than a scientist's hypothesis http://en.wikipedia.org/wiki/Hypothesis, you are correct. The orbiting Sweetspot dictates the precise Plane of Motion. The intersection of that Inclined Plane (of the Motion) and the Horizontal Plane (of the ground) establishes the Base Line of that Plane, i.e., the Sweetspot Plane Line. It is this Line that the orbiting Sweetspot traces. The Release Swivel that "simply . . . squares the Clubface" -- and simultaneously produces the Maximum Transfer Power of the #3 Accumulator and assures Rhythm (6-B-3-0/A) -- also rotates the Clubshaft around the Sweetspot. Thus, the Release Swivel prepares and enables the Clubshaft for its own tracing through Impact of the Clubshaft Plane Line.

Also, the absolute difference between the base of the clubshaft hosel plane and the base of the sweetspot plane reaches a maximum value of about 2" at impact and decreases to zero at the 3rd parallel and 4th parallel conditions. That results in only a small angular difference in inclined plane between the clubshaft plane and sweetspot plane in the impact zone (and which only exists to a significant degree within a distance of about 12" behind/in front of the ball) and that very small difference is something my brain automatically computes on a subconscious level.

Conceptually, no new news here (but I appreciate your quantifications and will accept your word for them). We are agreed on these two points:

Fact: The Sweetspot resides outside the hosel at Address and Impact.

Fact: During the Stroke, they often occupy the same Plane.

Therefore, one of two conditions must exist:

Door #1. The hosel is rotating to accomodate the Sweetspot's orbit; or

Door #2. The Sweetspot is rotating to accomodate the hosel's orbit.

Your prior position was Door #2.

Which door now, Jeff?