Poker and investing are both about decisions amidst risk and uncertainty, played out in real time. The core of both poker and investing is the maximization of average profit based upon probability. In both activities, intuition is a dangerous guide. Quantitative reasoning, instead, is key to exploiting counter-parties. Both rely on the branch of economics known as utility theory. Utility theorists quantify preference orders such that a utility maximizer can determine how to make rational decisio…