Polarization then leads to an often-absurd state of affairs. Calculations of risk produce ever-safer cars, medications, bike lanes, and building codes. Yet the very idea of even studying risk becomes a risk itself when the conversation turns to guns, laying the groundwork for decisions that seem at odds with individual and national well-being. Gun-industry trade organizations fund leading gun suicide–prevention programs—and then force them to restrict mention of the potential risks posed by firearms.

