Trust requires credible promises grounded in knowledge of the other’s dispositions and options.

Evidence

Fourthly, and this is implicit in the third point, you do not trust a person (or an agency) to do something merely because he says he will do it. You trust him only because, knowing what you know of his disposition, his available options and their consequences, his ability and so forth, you expect that he will choose to do it. His promise must be credible. That is why we like to distinguish ‘trusting someone’ from ‘trusting someone blindly’, and think the latter to be ill-advised. — Diego Gambetta, Trust - Making and Breaking Cooperative…, 785

Categorization

• XREF: Credibility of promise is what collapses when observability vanishes in blindness — directly feeds the reader’s reading purpose about Saramago’s sighted witness. — connects to: Freedom to will requires tolerating uncertainty through shared promises — Shoshana Zuboff, The Age of Surveillance Capitalism, 1061