To be honest, trying to get through 16 pages and understand the positions/arguement, well that is more than I am up for. So I asked for a summary, probably won't get it but we will see.
Just an observation, over the years that I have been visiting TGM related forums, there are those who will say the Homer got everything right. They will toss out that it has been reviewed by engineers and scientists. Unfortunately I have never met anyone who has these reviews and I have requested them.
Homer did 7 editions, and there have been changes. Was what was changed for the better? Was it to correct something? I don't have all the editions so I can't say.
Then we do have those who have at best done a cursory read and do not a complete understanding and will argue that it is full of errors.
It would really be nice to have Homer here to ask a few questions. He did have one problem, he often thought things were so obvious that they didn't need to be addressed, I heard some of his changes he made in later editions were to correct this oversight, not that the material was incorrect, just not obvious to everyone.
Mr. Kelley, for the most part, invented his own golf language. Much of the golf world now uses his terms, probably without knowing where they came from... LAG, LOADING, THROWAWAY, HITTERS vs. SWINGERS, ETC..
He worked on TGM for over 40 years, and was still working on it at the end.
There probably is MORE that can be learned, but Mr. Kelley gave it quite an effort.
These discussions will continue for a long time. The more I read and the more I'm taught the components, then the better I swing and play. There is more to HK than a lifetime can apply, and there is more to Golf than a single book can describe. I'm happy with the path that I've chosen and my knowledge of the Golf swing that I've acquired from HK and this forum and its members and other TGM people. The progress is slow but sure and I believe I've chosen correctly. The sound of ball compression and lower scores are proof enough for me. But, there is a place for doubt and re-evaluation, but after all of that, I'm still here.