If Nietzsche Were a Narwhal overturns everything we thought we knew about human intelligence, and asks the question: would humans be better off as narwhals? Or some other, less brainy species? There's a good argument to be made that humans might be a less successful animal species precisely because of our amazing, complex intelligence. All our unique gifts like language, math, and science do not make us happier or more "successful" (evolutionarily...