PSD.5:4.3 - Make each model’s use intelligible

A reader should be able to say: “This model concerns this subject, answers this question under these conditions, and supports this limited use.” Supply the assumptions, evidence source and interval, important omissions, and an observation that would invalidate or narrow that use. Identify the exact model content or edition when a changed value could alter the result.

For a mathematical formalism, simulation, or learned representation, apply C.29 when the choice of mathematical object, mapping, preserved structure, or information loss changes the claim. For example, a road graph can preserve routes and travel-time assumptions while omitting residents’ access rights and the reliability of an untested deployment procedure. C.29 does not establish those omitted facts.

Ordinary local meaning needs only the relevant meaning, units, scope, or evidence statement. Use A.1.1 when the decision needs to establish whether a model applies to a stated subject within a stated claim scope, whether an assignment holder actually uses the model during Work concerning that subject, or whether fixed model and expression contents satisfy a declared coherence criterion under a comparison scheme. Select its broader bounded model-use structure only when the organization of those relations changes the receiving decision. Neither a model collection nor the word “context” supplies that structure.