Library / Problem Structuring and Decision Support Principles Framework
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PSD.13:4.2 - Recover what the available premises actually support

For every premise that can change the disposition, recover its claim, exact subject and configuration, source or supplier, applicable window, intended use, uncertainty and reliance limit. Inspect available results first; use A.15.9 to reuse an adequate result, retain its useful limit, or select a worthwhile obtainable missing contribution, and A.10 to qualify the actual reliance. This pattern adds no second specialist-acquisition Method.

Read a comparison as a result over particular alternatives under particular values, evidence and assumptions. A PSD.12 robustness result contributes only where it can change this recommendation for the same configuration and horizon. It neither entails the whole recommendation nor authorizes the later decision. Preserve the PSD.9–PSD.11 comparison basis needed to interpret it.

Keep the live set and the compared subset explicit. A result about internal development and one mixed human–AI arrangement does not dispose of an external provider or a materially different probe. A gap about one candidate can prevent ranking that candidate while leaving an independent comparison usable. Do not narrow the set simply because evidence is easier to obtain for the familiar option.

Preserve material agreement, disagreement and affected-party concerns from PSD.7 or a qualified direct account. Distinguish a factual objection, a value conflict, an authority condition and a question about representation; they call for different responses. Give the objection and its consequence enough prominence to survive the return. Attribution and disclosure must respect the applicable protection and confidentiality conditions.

For development opportunities, consume a qualified opportunity result: the problem or promise, dependencies, bounded reachability, uncertainty and next question. A search/archive entry, a fashionable technology or a candidate label supplies none of those by itself. Opportunity construction is a separate Method with an independently useful result; composing advice does not complete missing search, dependency or reachability work.