“We also know, of course, that human beings are not perfectly rational calculators. Our behavior and decisions are based on a mixture of calculation, emotions, and internalized norms, with calculation often a minor component of the cocktail.” MindEmotionTheoryLogicRationalHomo Sapiens Book:Ultrasociety: How 10,000 Years of War Made Humans the Greatest Cooperators on Earth Source: Ultrasociety: How 10,000 Years of War Made Humans the Greatest Cooperators on Earth