I very much agree that they are not all equal. I don't agree that you can make any truly clear cut distinction between physics and geometry, as they are both simply a different perspective on observing the same motion and force in time and space. Certainly useful to use the two to focus discussion however.
I say that because the Head is attached to the shaft and will obey the geometry and plane lines. Power and Physics renders down to the Head once all the lines are set.
Hinge action? That is after the fact and a unique Homer concept.
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