MMP.8.SD:4.6 - Return the model and propagate a consequential change

Return the state or belief and its update, admissible policy information, action-dependent relations, consequence criterion and continuation relation. Include a computed policy comparison or bound when it is already useful, and state the assumptions that make it applicable. A formula alone can be the right input to a computational specialist; a two-branch calculation can already settle an ordinary choice.

Work through an available case from initial information to the result that the receiving activity uses. If a state reduction was needed, include the histories it would otherwise merge. Compare with a serious simpler option: a fixed plan, immediate-gain choice, full history tree or an existing policy with an adequate bound. Added state and computation earn their cost by changing the answer, making it obtainable or preserving a needed qualification.

When an actual premise changes, follow the affected dependency. A delayed observation changes allowable conditioning; changed resource availability changes actions and transitions; a new target changes the consequence account and may change the state. Recalculate the affected continuations. Use MMP.14 when observations reveal systematic mismatch in the proposed model, and the subject method when its action consequences need repair.

Use C.11.DUA to decide whether additional observation, modeling or computation can improve the receiving use enough to warrant its cost. An existing bound can settle the question. A hypothetical sensitivity exercise is useful when it can expose a consequential assumption; it is not an additional task when it cannot change use.

A human or AI participant can construct or calculate this model. Applying a policy in the subject still requires the observations, permitted actions and performing method that the model assumes. Methodological work uses the model to decide, for example, whether to observe before acting, retain a resource or change a method after an informative result; it also supplies the practical conditions under which that sequence can be performed.