PSD.6:4.5 - Assess the fragile premise and retain a stop

Examine the assumption most likely to make the selected way unusable: for example, whether a participant can challenge an attributed statement, whether a model accepts the needed scenario, or whether two outputs mean the same thing. Use present support to select a qualified Method or narrow its promised result. When a rehearsal, direct evidence check, or bounded trial could improve that selection, apply C.11.DUA to its obtainable contribution and full cost, delay, access, and burden before commissioning it; A.15.9 governs an outside-practice request.

State what the trial can establish. A successful rehearsal may show that the contribution can be produced under those conditions; it does not demonstrate universal effectiveness or later implementation success. If a required participant, expertise, safeguard, or evidence input is unavailable, adapt the Method within its admitted variation, choose another, narrow the result, or return a blocker.

Continue only while the selected Method can produce its declared result without concealing the unresolved premise. A deadline may justify a narrower return; it does not justify claiming that an omitted contribution was completed.