The Deterministic Economic Substrate: A Thermodynamic Model of Zero‑Marginal‑cost Intelligence, Labor, and Governance

The foundational premise of historical macroeconomic theory rests upon the axiom of scarcity, <br> asserting that human civilization must continuously allocate finite resources among infinite <br> desires, thereby generating inescapable opportunity costs. This paper dismantles that axiom by <br> demonstrating that scarcity is not an immutable physical law, but rather an entropic tax imposed <br> by the limitations of irreversible computation. By unifying the fields of economics, physics, <br> computation, thermodynamics, reversible AI, and macroeconomic theory, we prove that <br> reversible computation equates to the absolute elimination of informational entropy. Within this <br> framework, we mathematically demonstrate that the deployment of reversible compute <br> substrates triggers the zero marginal cost of intelligence, labor, and governance. By establishing <br> a formalized Deterministic Economic Substrate, this research maps the thermodynamic <br> transition from stochastic, zero-sum market dynamics to exact, positive-sum planetary <br> coordination. We present hardware-verified empirical evidence from the Oikonomia deterministic <br> stack—including the Deterministic Financial Infrastructure Standard (DFIS), the Unified <br> Reversible Intelligence Substrate (URIP), and Deterministic Generalized Inverse Cognition <br> (DGIC)—to prove that planetary-scale, infinite-context deterministic planning is now <br> computationally feasible. This resolves the historical socialist calculation debate by establishing <br> a mechanism for exact resource allocation devoid of complexity collapse, information loss, or <br> entropic drift. Ultimately, this paper models the macroeconomic transition to post-scarcity, <br> framing Universal Basic Abundance not as a political preference, but as an inevitable <br> thermodynamic and macroeconomic consequence of the Deterministic Compute Law