I took my GSEB class at Martins place and he actively participated in the class. He most definitley knows the machine and has put out a good book himself as well.
I suspect he knows what he is doing by not mentioning TGM because of the "good ol' boys club" and how they would probably say bye bye Mr. Hall. As long as people like him get out there and talk the talk the word will eventually get out to the masses.
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