[airair]

I think that most of the time, people talk in these videos about gravity when they really meant inertia... some mention gravity, as to "let the arms fall from top", that's a way to
suggest a feel. If all you were doing is let the arms fall, there wouldn't be any power in the golf swing.

I think there is something to be said about to work together with gravity and not against it - like pushing a child in a swingset. The MacDonald drills also work with gravity in how to swing the arms in accordance to which foot to step on. But TGM has its own definition of rhythm, so I guess this must be something else...?