Trust always involves someone trusting someone to do something. [definitional]
A characteristic of trusting relationships, one that is not uniquely relevant to the encapsulated-interest view, is that trust is generally a three-part relation: A trusts B to do X (Baier 1986; Luhmann 1980, 27).
DEFINE: The three-part structure of trust (A trusts B to do X) is a definitional clarification central to the author's conceptual framing.
Russell Hardin, Trust and Trustworthiness, loc. 91