" The thought experiment of Adam Smith correctly takes into account the fact that people rationally pursue their economic interests. Of course they do. But this thought experiment fails to take into account the extent to which people are also guided by noneconomic motivations. And it fails to take into account the extent to which they are irrational or misguided. It ignores the animal spirits. "

― George A. Akerlof , Animal Spirits: How Human Psychology Drives the Economy, and Why It Matters for Global Capitalism