Familiarity and expected future meetings enable cooperative trust

Evidence

Or if members of a group are not familiar with each other, no mutual aid occurs until they have been together for some time. As familiarity grows, individuals come to sense the reliability of each other. Furthermore, the expectation of an indefinite number of future meetings means that deception is a much less attractive option. The major message is this: in cooperative behaviour, conditions matter a lot. — Diego Gambetta, Trust - Making and Breaking Cooperative…, 460

Categorization

• XREF: Directly instantiates Luhmann’s ‘familiarity’ as the baseline substrate of trust — this is the precise theoretical bridge the reader is building between Biology (familiarity → sensing reliability), Luhmann (familiarity as baseline), and Hardin (trust requires observable constraints).