Before using a practitioner's specialist, the practitioner: assesses whether the specialist is competent, capable and objective, asking an external specialist about interests and relationships; learns enough about the specialist's field to decide what the work should cover, its nature and its aims, and to judge whether it is adequate; agrees the terms of the work; and judges whether the work is adequate, including whether findings, assumptions, methods and source data are relevant and reasonable.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.