PSD.5:12 - Relations

• PSD.3 supplies formulations only where their differences guide model discrimination. PSD.4 supplies the scope and reopen basis for the same subject and decision. Missing needed values require qualified direct sources or an exact gap.
• PSD.6, PSD.8, and PSD.16 may use the model account to discriminate their Method, alternative, or simultaneous-inquiry claims. Representation does not make the represented condition obtain.
• PSD.10 may use the account’s evidence only for the same configuration and horizon; that evidence neither entails its uncertainty judgement nor authorizes action.
• C.29 governs load-bearing mathematical-lens use. A.1.1 governs claims about a model’s applicability, its actual use in assigned Work, and the coherence of fixed model and expression contents under a declared criterion and comparison scheme. Direct scientific, engineering, causal, and evidence practices retain their own truth and adequacy questions.
• C.28.CM supplies causal construction when the needed relations are missing. Its conditional models join the account at :4.2–4.3; their causal support remains a separate question under C.28 and :4.5.
• Value treatment and comparison remain separate from constructing models. A model can expose a value conflict without settling it, and the later choice remains with its authorized owner.