How Trust Works
Trust is perhaps one of the most, if not the most, valuable thing in our society. Much of our societal functions depend on trust. In The Count of Monte Cristo, the Count opens up an account with Danglars, and because he is rich, Danglars trusts him and as a result Danglars opens up an account with him, which eventually leads to his downfall.
Here are a few links on how the brain trusts: