Trust is the foundation of all human connections, from chance encounters to friendships and intimate relationships. It governs all the interactions we have with each other. No one would drive a car or walk down a sidewalk, or board a train or an airplane, if we didn’t “trust” that other people took their responsibilities seriously, and would obey whatever rules applied to the endeavor at hand. We trust that other drivers will stay in their lanes, that conductors and pilots will be sober and alert. And that people will generally do their best to discharge their obligations toward us. Culture, civilization, and community all depend on such trust.