[Sonic_Doom]

I most certainly agree. Perhaps it is more useful to think of 'low point' as the point farthest away from 'center', rather than it having any relationship to the ground.

There is a difference in perspective between the low point of 'force' (both arms straight) and the low point of the clubhead (at left shoulder, relative to ground, right arm stil bent).

This, IMO is the core reason for 1-L-15.

Are we seriously considering that the in-line condition (arm and clubshaft), no matter where achieved, is low point?

We intend to strike a ball that lies on the ground, or on a tee that lies on the ground. Low point must IMO be in relation to the ground. Although I must admit I've more to but I understood Low Point to be the lowest point (elevation) in the clubhead's orbit.

CW