Fine title, (good speaker too) - it's a litmus for the loonies of all stripes IMO. 'Certainty' is as sure a sign of megalomania / zealotry as the same level of egotism in one's imagined Perfection, wearing practically the same clothes..

(Whether born, bornagain or born again and again and again, I wot.)

Personally, I wish the dry drunk would hit the bottle again, loosen up, quit and go back to cutting brush: that he can handle