THE ENFORCEMENT CRITERION AS THE SOLE ADMISSIBILITY CONDITION IN PHYSICS

This paper tests whether the enforcement criterion itself—the rule that only physically enforcing mechanisms constitute physical reality—qualifies as a physical mechanism. Using elimination by necessity, it removes the criterion while retaining all forces, energy exchanges, momentum transfers, and reciprocal back-reactions, and observes invariant physical evolution. The analysis demonstrates that the criterion does not enforce change and therefore is not a physical mechanism, while remaining a necessary, non-enforcing filter for admissibility. The result cleanly separates physical enforcement from selection rules without introducing interpretation, mathematics, or epistemology.