Prodded by economists in the 1970s, corporate directors began adding stock options and bonuses to the already-generous salaries of CEOs with hopes of boosting their companies' fortunes. Guided by largely unproven assumptions, this trend continues today. So what are companies getting in return for all the extra money? Not much, according to the empirical data. In Indispensable and Other Myths: Why the CEO Pay Experiment Failed and How to Fix It, Michael...