[rwh]

There has been an additional text to the second paragraph on
2-H in the 7th edition.

"The important thing is that the true Swing Center for ALL COMPONENTS is around a Hinge Pin with one end at the top of the Stationay Head and the other in the ground, precisely between the feet, with no regard for Body Location or Position at any time"

How do you read this? What does it mean for you?
What is your interpritation(?) of it? (color added by rwh)

Some observations:

1. It is possible for the top of the Swing Center Hinge Pin to be located anywhere -- extreme left, extreme right, extreme forward, extreme back, and anywhere in between -- with the bottom of the hinge pin precisely between the feet. Therefore, the concept of the Swing Center Hinge Pin seeks only a stationary head but does not mandate that the head be in any particular location.

2. Since the head can be located anywhere, the Swing Center Hinge Pin is neither the spine nor any other actual body part. The Swing Center Hinge Pin is imaginary - a concept.

3. The concept of a Swing Center Hinge Pin must allow for the actual anatomical structure, physical capacity and psychological needs of the individual executing the movement.