PSD.6:4.1 - State the required result and selection conditions

Use the PSD.4 scope for the same subject and receiving decision when it constrains the selection. Use a PSD.5 model account only where its models, limits, or conflicts can discriminate candidate Methods. Neither input creates a mandatory sequence.

Recover the current facts that can change Method fit: whether the difficulty concerns interpretation, evidence, interconnected choices, values, or action; who can participate and through which channels; what disagreement must remain visible; the available expertise and data; and the time and resource boundary. Obtain consequential participation, competence, safety, and authority premises from qualified direct sources.

A source is useful only for its named subject, condition, and evidence window. If a required scope, model, or participation premise is missing or incompatible, state the exact gap, select a narrower use if defensible, or stop. Do not treat availability of a MethodDescription as evidence that the Method fits.