Trust-Risk Trade-off

Trust changes what you are willing to risk: money, information, responsibility, or dependence on another person's promise. That vulnerability creates the upside because cooperation becomes cheaper and more ambitious. But it also creates the downside because an exploiter now has something to take. The trade-off therefore resembles a Prisoner's Dilemma: protecting yourself completely can destroy mutual gains, while cooperating without safeguards can reward defection.

The right level depends on the game around the relationship, as the evolution-of-trust lens suggests—not on whether trust is universally good. A low-trust-society sacrifices cooperation to reduce exposure; indiscriminate trust sacrifices protection to maximize openness. Calibration sits between them.

This model does not say that suspicion is always prudent or that every relationship should be treated like a transaction. Too little trust has its own cost: cooperation never gets the chance to produce its upside, and habitual suspicion can feed the resentment described in trust-as-an-antidote-to-resentment. The boundary is exposure, not warmth—you can be generous without making every consequence irreversible.