[O.B.Left]

I think I am understanding what you say here. So is out in "down, out and forward" illusion created by the fact that our eyes are above the plane? If our eyes were positioned somewhere on the (3D) plane (for example, from the highest point of the swing plane(or radius)), movement of a club head we see should be down and forward (no OUT). On the 2 dimensional plane line, a club head is moving straight; am I correct? Is this why you said "not 'cross line'"?

Thanks

(My head is spinning. I guess I need to buy the yellow book soon since TGM becomes interesting to me more and more.)

DK your geometry is good, I can tell. Dont worry about your noggin, this is the place for "head spinning" , my brain is normally mushed like one of those poor NASA guys riding the rocket centrifuge.

The "Out" of Three Dimensional Impact is very real as is the "Down" and the "Forward" of course. By virtue of the fact that we are traveling an Inclined Plane. Picture it from a down the line point of view, your clubhead could not be on an Inclined Plane and travel Down without traveling Out (towards the plane line) at the same time. A truly horizontal plane would have forward and out, no down. A vertical plane would have no out. So in regard to the Out, just go Down all the way and the Out will take care of itself given your plane of motion.