The Subjective Variable — Confirming & Operationally Completing Hawking's Arrows of Time

Stephen Hawking articulated three arrows of time—the thermodynamic, the cosmological, and the psychological—and argued the psychological arrow points in the same direction as the thermodynamic arrow. We confirm this alignment and provide the missing operational physics for the psychological arrow in conscious, finite systems. Using the Unified Lattice, we instrument subjective time via the Time Construct Ledger (Sequence Integrity, Duration Fidelity, Cycle Coherence, Temporal Drift, Temporal Load) and aggregate it into a Time Efficiency Score (TES). We state a governing resource law (the Yin–Yang of Interdependent Resources) and a Generativity Thrust–Drag equation linking purpose, stress, and depletion. We show how TES couples to thermodynamic costs through efficiency (SDR) and rework—completing Hawking’s bridge between objective and subjective time. The result is a testable, practice‑ready framework for time’s psychological arrow, consistent with Hawking’s insight and respectful of his priority.Hawking; arrow of time; psychological arrow; thermodynamic arrow; Unified Lattice; Time Construct Ledger; TES; SDR; CAI; Coherence; Alignment; S_eff; Fuel; Generativity Thrust–Drag; Yin–Yang of Interdependent Resources; RBC; SI; DF; CC; TD; TL; Shared Field; κ; SFC; Hyperion Layer; micro-generativity; ALI; CEI; collapse engine; outcome routing; entropy; efficiency; grounded accuracy