The truly important thing about Enneagrams is that they prove once again P.T. Barnum's dictum that one can never under-estimate the intelligence of ordinary people. Merely because something is risible, clearly inane, and has no statistical validity doesn't mean ordinary people won't clutch it to their hearts with the same ardor used for such important and truthful guff as horoscopes and fortune-telling - and with the same degree of real-world substance. Next up: the importance of matching your toothpaste flavor to your personality type in order to achieve success in everything you do....