EXP-003 Isomorphic Procedures Explainability

• 18 pairwise comparisons were analyzed without changing Comparator v3.1 classifications.
• Highest review priority observed: high.
• Most common difference type: omitted_step (88 occurrences).
• Provider pattern count: 3.
• Variant pattern count: 3.
• Vocabulary shifts are separated from preserved backbone and primitive-role agreement.
• Recognition differences are explicitly linked to whether backbone stability changed.

What This Does Not Establish

• It does not change Comparator v3.1 scoring.
• It does not validate any hypothesis.
• It does not replace human review.