The biggest and most pervasive problem for us in trusting others is not the malign problem of dealing with cheaters but the relatively neutral problem of often having to deal with people with whom we cannot expect to have ongoing relationships in which to ground incentives for trustworthiness.

XREF: Connects to game theory literature on repeated interactions and tit-for-tat cooperation, where ongoing relationships ground trustworthiness.

Russell Hardin, Trust and Trustworthiness, loc. 788