The taxonomy also distinguishes objective indicators, measured or calculated from observable data, from subjective indicators, which describe perceptions, judgements and experiences, such as stakeholder or well-being assessments; both can be qualitative or quantitative, both carry uncertainty of different kinds, and governing bodies should know which kind an indicator is when weighing it, since subjective indicators can capture what objective ones miss but need care in collection and interpretation.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.