David Gardner: Every once in a blue moon or a new moon or an old moon or a borrowed moon, I cue up a hodgepodge of points that I want to share. They're not really related to each other. They're a hodgepodge, but I force them to fit into this mold, something old, something new, something borrowed, something blue. You probably know the expression, don't you? It's what brides traditionally are supposed to wear. On their wedding day, for good luck, something old, something new, something borrowed, something blu ...