They stink. They're force-fed drugs that are creating antibiotic-resistant bacteria and, a lot of the time they don't even taste that good. But it's not their fault. In fact, according to Barry Estabrook's new book, Pig Tales: An Omnivore's Quest for Sustainable Meat, pigs are so smart they can work the thermostats in their pens and beat young children at computer games. So should we eat them? Estabrook has spent a lot of time investigating the question.