We learn it early on; the unstated rules, the lines which may not be crossed, and to be weary of those whose reputation precedes them for the blatant disregard of both. How they are learned; what they are; whether explicitly stated or impliedly conveyed; few, if any, have a memory where the Head Mistress of the Universe of Playgrounds sat us all down and said, “Now young ladies and gentlemen, here are the 10 rules of fair play.” Regardless, we all somehow came to recognized and apply them. […]