DTM.4:1 - Problem frame

Use this when early growth, a fitted trend or a single threshold is being used to claim that a practice will establish itself, disappear, or return after an intervention.

A method may decline when few groups use it yet persist once compatible partners or supporting capabilities become common. A brief reduction can be followed by return to the same regime. A favorable gain from switching may still produce no uptake when no capable, authorized recipient receives the proposal.

The first result is a conditional account of possible continuation: whether a rare variant grows in a specified environment, what can maintain it, and what would change the reachable regime. Use the relevant mathematical methods to establish the properties of the chosen model; this pattern selects and connects the questions that a spread claim must answer.

For an immediate one-off choice with no reliance on persistence or later return, a comparison of the available actions may be sufficient.