They believe they can out think out maneuver out last out perform everyone all the time no matter what. And yet...well, and yet they make a mistake which they will NEVER admit and that's all it takes. One tiny little mistake made at the wrong time. One teeny tiny microscopic error in judgment about someone. That's it. They're toast. They never know they did themselves in by not being as perfect as they thought they were. Oh frabjous joy! Oh happy heart. Oh happy day! Oh boy! :)