Plane of left wrist cock and left arm

[golfbulldog]

"What does aligned with the left arm mean or how does that help us define something important if the left wrist motion "always aligned with the left arm" whenever it is flat.

I think that the wrist cock can be described as "aligned with the left arm" when cocking and uncocking of the left wrist is not assocaiated with a tendancy of the radius and ulna to rotate (pronate or supinate) during the cock/uncock...it is the position of mechanical advantage that the arm and wrist fall into if the club is held in a neutral grip, the sweetspot held fixed and the wrist tries to uncock....

probably...