Trust models. Big rabbit hole. Critique and analysis of zero trust,
contracts, motives etc. Very enlightening and fun in a way.
Look at Sir Berners-Lee: smart guy, but he put "trust" as a component box in his vision of the so-called Semantic Web as if it was an API that you could just call. Trust is of course an emergent property of a well-designed, reliable, transparent, safe and secure system, and as such it is a relation between a system and its human users.
Please write up what you find out and share!