Information comes from literature reviews, observation, expert opinion, measurements, experiments, interviews and surveys, and often reflects past losses or benefits, along with causes where known. The organisation decides source and reliability, type (qualitative or quantitative), level (strategic, tactical, operational), quantity and quality needed, collection method and confidentiality; states required statistical confidence when sampling; checks whether context has changed before reusing earlier data; and assesses validity, reliability and limitations by age, source and method, gaps, and the provenance of data sets, algorithms and models.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.