This is a fascinating look at how scientific thinking evolved from traditional tribal thinking, and its lasting impact on human success. Human beings evolved in a tribal environment. Over the millennia, our brains have become adept at fostering social networks that are the basis of group cohesion - from the primary family unit to the extended association of clans, villages, cities, and even nations. "Tribal Science" examines the many ways in which our tribally oriented brains perceive and sometime distort reality. It also describes how our social nature led to the development of the cognitive tricks that have served us so well over the centuries - the most important of which, argues author Mike McRae, is undoubtedly science. Through the sharing of scientific ideas, our species has expanded the reach of the tribal community to a global scale.