Agency, Process, and Scale do not name three entities, causal tiers, metaphysical substances, or independent parts of life. They are analytic projections through which one viability-oriented, constraint-closed organisation is investigated. Agency asks what living systems do; Process asks how continuity is maintained despite change; Scale asks where persistence is organised across spatial and temporal extents. Their integration has ontological significance only when each is empirically supported, when their relation generates explanatory constraints, and when evidence arising through one projection can force revision within another.