...[H]uman beings are neurologically ill-designed to be modern Americans. The human brain evolved over hundreds of thousands of years in an environment defined by scarcity. It was not designed, at least originally, for an environment of extreme abundance... Even a person on a diet who sensibly avoids coming face-to-face with a piece of chocolate cake will find it hard to control himself if the chocolate cake somehow finds him... When faced with abundance, the brain's ancient reward pathways are difficult to suppress. In that moment the value of eating the chocolate cake exceeds the value of the diet. We cannot think down the road when we are faced with the chocolate cake.

Author: Michael Lewis