Those books are great. They are my favorite GA books (together with Hestenes' papers). I just wanted to add that he also has wonderful youtube videos. And I al

Those books are great. They are my favorite GA books (together with Hestenes' papers). I just wanted to add that he also has wonderful youtube videos. And I also agree with that 100 years prediction. I'm even trying to do my part so that we do not have to wait so much!