During the recent celebration of America's 237th birthday, I was reminded of lessons learned in Miss Muzzey’s second grade class. It was through the daily drilling of math flash cards in her class that I adopted the view that all problems must have just one answer. Three plus seven equals ten — and only ten. Two times four equals eight. You get the picture. It seems I’m not alone in clinging to the illusive certainty of problems with singular answers. Throughout life I’ve enc