DTM.9:1 - Problem frame

Use this when a protective response depends on the activity it encounters and, in turn, changes that activity, useful work or subsequent transmission.

A checking process may consume the capacity it protects. A rule triggered by visible use may restrict an easily recognized useful method more than a less visible faulty one. A learned warning may persist after conditions change. In each case, treating protection as a fixed beneficial reduction can reverse the predicted result.

Start by making the response itself part of the causal account. The first result is a conditional model of its formation, persistence, costs and differentiated effects, sufficient to compare the proposed change with a plausible alternative.

If a fixed external constraint has adequate subject evidence and its response dynamics do not matter to the receiving decision, retain that simpler model.