An old, small town cop once told me something that has proven true in every single case I've run across. He stated, unequivocally, "Everybody in the world is an a hole, you just don't see it in most of them until somebody pushes their buttons." That truism has never failed me in interactions with every person I've ever run across. Some people you can do everything in the world to try and not come close to that button and it doesn't matter, they're going to show that nasty side. Others are far easier to deal with, it takes something to trigger the bad- booze, drugs, jealousy, greed, politics, a perceived insult, not buying their schtick, whatever. In the end, most of the trouble I've run across in this life comes from that guy in the mirror. He's my biggest problem.