A Constraint-Based Ethical Derivation from the Structured Nature of Physical Reality

This paper derives a complete ethical framework directly from the structural properties of physical reality, without importing external values, authority, or rights. Reality is constrained and produces non-equivalent outcomes: some actions enable systems to persist and function, while others cause irreversible degradation. Any system capable of action must therefore select among these outcomes. Arbitrary selection treats non-equivalent outcomes as equivalent, creating a structural self-contradiction for the acting system itself. Justification is thus required, and the only non-arbitrary grounding available within a constrained system is necessity. The traditional is/ought gap arises only if one presupposes that an agent can stand outside the causal structure of reality. This presupposition lacks grounding in physics, biology, or neuroscience: agency is an emergent property of embedded systems, not a separable observer. Once agent separability is rejected, the gap does not arise and requires no bridging. Ethics therefore emerges not as an imposed system of values, but as the structural requirement for non-arbitrary action within reality itself. The derivation proceeds as a single, unbroken chain from observable physical constraints to the conditions of justified action. No value premises are introduced. The chain either holds or it does not..