THE ENFORCEMENT PRINCIPLE PHYSICAL ENFORCEMENT AS THE SOLE ADMISSIBILITY CONDITION IN PHYSICS

This paper establishes a single, minimal admissibility principle for physics: only mechanisms that physically enforce change are real. Using a strict elimination-by-necessity method, it shows that force, energy exchange, momentum exchange, reciprocal back-reaction, locality, irreversibility, and physically enforced constraints are necessary and sufficient for physical evolution. Any construct whose removal leaves physical evolution invariant—such as mathematical description, information, probability, potential, or purely descriptive geometry—is excluded as non-enforcing. The result is a physics-only foundation that terminates cleanly at enforcement, without interpretation, epistemology, or auxiliary assumptions.