On a subject like genius, you’d think there’d be agreement about how many kinds of intelligence exist. Experts argue, claiming there’s between four and 12 categories. It begs the question — is there an infinite amount of phyla for dummies? One of Life’s great mysteries for me is how so many can own a house, raise a family, have a career, yet, are so dumb, it’s a miracle they make it from driveway to front door without being eaten by feral hamsters. Yet? They (the dummies, not the hamsters) can offer wisdom, can share, with alacrity, their own shortcomings, humility and...