Daryl, just curious. Why did you run from Erickson's site deleing all your posts while closing the door?
Erickson is in fact very knowledgeable. His knowledge does not limit itself within a book - he has lived the book on tour and found pure swinging wanting in his case. He has studied great ball strikers and found an alternative hitting pattern that probably does not fit your TGM version. That does not mean he is not knowledgeable - on the contrary, he has something extra to offer.