Here are the Three Basic Essentials inserting the definitions from the Glossary:
1. Choosing the Head--rather than Between-the-Shoulders as the Pivot Center (A stationary Head)
2. Holding the center of gravity of the body inside The Stance without moving the Head (Balance)
3. Holding both Lever Assemblies to the same basic R.P.M. throughout the Stroke while overtaking all other Components at a steady, even rate (Rhythm).
The Three Basic Imperatives are not quite as "neat" but using the key words (Flat Left Wrist, Clubhead Lag, Plane Line).
1. Positioning the Left wrist to be vertical to its Left shoulder Axis and to its Associated Plane during Impact.
2. The information transmitted through the #3 Pressure Point by the resistance of the Clubhead to change
3. A line inscribed on the surface of the Inclined Plane passing through the ball location to serve as its Base Line and its center of rotation when changing its angle.
I can relate to the concept that the Imperatives are necessary to "make sense" of everything else. Maybe some AI's project will pursue this.
Solid post, DRW. Thanks for your research on the Essentials and Imperatives. I'm sure it helped 'clear the fog' for some and inspired others to efforts of their own.