The premise of Survivor, in which 16 previously unacquainted humans were routinely abandoned in forbidding locations to brave the elements, was no doubt wildly popular because of the simple fact that we humans, on our own, are virtually helpless. We aren’t particularly adept at building shelter, fending off predatory animals, and the thought of having to procure a meal with nothing but our bare hands and our wits is enough to make many of us run for our nearest Whole Foods. How on earth have we managed to dominate the globe when we can’t survive in the wild? As Joseph Henrich points out, human groups are far less hopeless than lone individuals, and our collective brains have produced ingenious technologies, sophisticated languages, and complex institutions that have not only allowed us to inhabit diverse environments, but have actually shaped biology. Check out the trailer for his new book, The Secret of our Success: How Culture is Driving Human Evolution, Domesticating our Species, and Making Us Smarter.