Several of my recent blogposts have offered examples of behaviors, particularly among bosses, that are considerably less-than admirable. Now, I am a firm believer that one should acknowledge, own, correct, and learn from one’s mistakes as a matter of course. Doing so requires strength of character and mind. In contrast, dodging mistakes is a mark of cowardice and fecklessness. Still, it is not enough to learn just from one’s own mistakes. There is another rich vein of error to mine for lessons: the mistakes of others, particularly those that manifest debilitating habits of mind or reveal adverse patterns of action.