Something I've noticed is that true experts (if there are such things) won't get mad or upset when you suggest a reason why they should do something different (like carrying a shotgun, to stick with this example.) Rather, they'll give you they're reasoning as to why they feel their way is better and won't shy away from a debate on the merits of that reasoning. It's those people who get angry when their position is challenged that probably aren't too secure in their knowledge to begin with.

Probably not the perfect appraisal of experts, but hey, what do ya want......I'm not an expert <img src="images/graemlins/smirk.gif" alt="" />

Chris.