I really don't get all this reliance on "science" and Newton's laws, especially when Einstein came along quite a few years ago and blew some of that stuff out of the water. And then the quantum guys came along and scared the bejesus out of him. Homer and G.O.L.F were not, are not, will not be the last word. It will be challenged, and it will be found faulty and something better will emerge. It's how science works. This basic geometric model also fails to incorporate the fourth dimension into calculations.
Its a machine, come on...lol. Homer Kelley was an engineer and the whole book is about engineering and how the body reproduces it. No string theory and atoms needed to understand it. Man was building complex machines before even the days of newton. When your impact interval is executed as a swivel you can't really have control of the clubface or at least as much as you could have - its sheer common sense - its a major simplification.