When turbulence is the new normal, an organization's survival depends on vigilant leadership that can anticipate threats, spot opportunities, and act quickly when the time is right. In See Sooner, Act Faster, strategy experts George Day and Paul Schoemaker offer tools for thriving when digital advances intensify turbulence. Vigilant firms have greater foresight than their rivals, while vulnerable firms often miss early signals of external threats and organizational challenges. Charles Schwab, for example, was early to see and act on the promise of "robo-advisors"; Honeywell, on the other hand, stumbled when Nest Labs came out first with a "smart" thermostat. Day and Schoemaker show leaders how to assess their vigilance capabilities and cultivate insight and foresight throughout their organizations. They draw on a range of cases, including Adobe and Intuit's move to the cloud, Shell's investment in clean energy, and MasterCard's early recognition of digital challenges. Day and Schoemaker describe how to allocate the scarce resource of attention, how to detect weak signals and separate them from background noise, and how to respond strategically before competitors do. The challenge is not just to act faster but to act wisely, and the authors suggest ways to create dynamic portfolios of options.