There is no science for making decisions when facing uncertainty. “Incalculable risks” are just that—incalculable. The best way to manage uncertainty is to rely on information drawn from a variety of independently financed and conducted experiments, rather than relying on a single, seemingly legitimate answer—whether from the stars or from data points. But politicians too often want the latter. Perhaps instead of politicians, we need statesmen—people who can stand up to groupthink and “facile theories”—to guide our response to crisis.