DTM.3:4.3 - Recover the feedback from wider spread
Ask what changes for a participant when more, fewer or different others use the variant. Common possibilities include access to compatible partners, demand on shared support, availability of teachers, recognition rules and a protective response.
Build only the feedback supported by the case. For example, increasing adoption may create more teachers and also consume their time. The net effect is a question about those quantities, not an automatic positive feedback.
Where the influence is one-way over the chosen horizon, state that reduction and its reason. A diagram with arrows in both directions is not a requirement to invent the second mechanism. Where both directions matter, trace the loop far enough to see which state or event the returning effect changes.
C.32.MWA helps keep the structures separate: the vertical of methods enacted in one performance, resource provision, control, contacts and units of selection need not share the same boundaries.