A.7.1:10 - Rationale

Ontology effort should scale with changed consequence, not with available vocabulary. A subject-pattern invariant or grounded counterexample provides a better start than a universal checklist because it exposes why the current account fails. Four loci preserve the common places where repair occurs without forcing an order. The description-level narrowing of C.19.2 carries the economics, work separation, and truthful one-apparatus path.

Repair only the ontology that changes the engineering move.