Last summer, in a feature story that I penned for Cape Cod newspapers that somehow made its way to the Patriot Ledger and other mainland publications, I addressed how infrequently the “blue moon” phenomenon occurs. “Once in a blue moon,” I wrote, is something that “you might have said … when referring to how often David Ortiz steals a base,” among other infrequent happenings. Yesterday, the latter event happened, when Big Papi swiped his first bag since 2013. The last blue mo