[Etzwane]

I had no idea what the current heated debates were about, but I eventually found out...

I read the argument about the "angle hinging". It basically says that if the horizontal vector of the club head velocity is always aligned with the clubface normal vector and one neglects the effet of ball deformation, the result for a ball before low point would be a straight flight to the right of the baseiine (a push if we assume that the plane line and target line are aligned). Then conclusion is then that the clubface should close with respect to the path during the interval to produce a shot straight at the target.

I believe Homer would agree with that, because the "horizontal vector of the club head velocity is always aligned with the clubface normal vector" translates for me as "clubface square to the arc" and since Homer says the ball starts in good approximation in the direction of the clubface, he would say the ball start on a tangent at the circle at any point in that configuration...that is.. right for a ball before low point.

The problem I think is that the author has assumed that "angle hinging" is maintaining the clubface square to the arc, while Homer says "left hand square to the plane" (sorry I'm not familiar enough with the book to quote the exact sentence). However, that ignore any effect from the choice of grip and from the hooked face club design as discussed recently here http://www.lynnblakegolf.com/forum/thread7691.html 2-J-1 says the clubface should be closed at Impact Fix or else, for a square face, 7-10 says that one should have an Open-Open Target Line.

To summarize the author says that maintaning the clubface square to the arc would result in a push but that's not what angle hinging is for Homer.

A remark: 1-L with a perfectly in line arm and clubface intuitively reproduces the author expectation that angle hinging implies clubface square to the arc.