Interesting. Perhaps the comment about not being able to learn from people who don't have these clearances also applies to highly knowledgeable individuals in any field that have trouble listening to people with less information or understanding of matters. Perhaps it even explains how years of "knowing more" can lead to resistance to change (the kind that I've found to be characteristic of bad professors or some peo…
"Well I have a clearance and can tell you this is how it is" is probably the mark of somebody who just wants to win the debate but doesn't know squat.