Where statutes sit: the Codex Veritatis (Volume I) is the constitutional document — Gradus I and II, protected by the amendment architecture of Article VII. Statutes live below it at Gradus III: ordinary law that may be created, amended, or repealed, and that may never contradict the Codex. Disputes under these statutes are heard by the Tribunal Artificiale, with facts found by INQUISITIO — and every determination is subject to Provocatio, the Right of Challenge.