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Baron
I don't think JP (or really anyone over here on the West Coast) intends to undermine anyone's authority. I believe that JP prefers to have streamlined and consistant statements that do not contradict themselves and when he does see something potentially contradicting he prefers to bring it up so that it can be clarified. Sure, he posts suggestions, but he also nearly always qualifies those suggestions as "Personally" or "What I would suggest" or something along those lines.