David Ogilvy once said, "The consumer isn't a moron; she is a monkey." Kidding, of course. Leo Burnett said it. Anyway, two ad execs and an egghead from Yale have begun testing an ad campaign aimed at capuchin monkeys. I'm not sure why, since nonhuman primates have notoriously low buying power. And they're not exactly discriminating or brand loyal, being generally content to eat anything that rolls across the floor or gets snagged in the fur of their mates.