[EdZ]

Bucket - I'm talking mechanical machine re: ideals.

The whole confusion of both golf and G.O.L.F.'s application is where the human machine gets involved.

If there is one area I would have loved to have learned more of re: Homer's views, it is how the human machine relates to what he has described in the book.

there is geometry, there is physics, and there is anatomy

It doesn no good to look at a golf motion without considering all three.

As far as the questions in your post, yes I am assuming a primary lever, and to whatever extent reasonable, fair to say that my initial comments re: ideals are likely more applicable to a hitter than a swinger, who must deal with the face rotation and its 'physical' relation to plane more than a hitter would.
as far as 45 degrees - to the ground (again, mechanically speaking, for margin of error in both distance and accuracy)

I'm curious if anyone has any data looking at what angle the right forearm is to the ground at impact on average for the top players? Any key differences for accurate players vs. powerful ones?