Trust is being viewed as a kind of result, but actually it is a process, an investigation process, I would say. It is a test whether one can be trusted or not. Say, you come to a restaurant you don’t know anything about and order food. It is credit. When I finish eating I will understand whether they can be trusted or not. Credibility is when you haven’t understood from the first time and come for the second time. But you do not have trust so far.
When a person is said he does not trust it is the same as saying he does not taste. Trust is the mechanism of tasting the world for its friendliness. When a person has stopped trusting it is as if (s)he has understood everything. That is why “restoring trust” means “recommencing trials”.