Corporate managers who face both strategic uncertainty and market uncertainty confront a classic trade-off between commitment and flexibility. They can stake a claim by making a large capital investment today, influencing their rivals' behavior, or they can take a "wait and see" approach to avoid adverse market consequences tomorrow. In Competitive Strategy, Benoit Chevalier-Roignant and Lenos Trigeorgis describe an emerging paradigm that can quantify and balance commitment and flexibility, "option games," by which the decision-making approaches of real options and game theory can...