C.28.MR:10 - Architectural Rationale

The construction works on mechanisms because the question concerns what would change if a different way of determining a variable operated. Statistical conditioning instead uses information about values generated by the current ways. Both operations are useful; :5.1 shows when they answer different questions.

Retaining functions while recomputing values carries the effects of a local replacement through the model. Keeping the input law retains the population and common causes against which those effects are compared. This makes the difference attributable to the specified modeled change rather than an unnoticed change of background.

Acyclic evaluation is the simplest executable case. Coupled constraints and dynamic events require attention to the transformed system’s solutions. Query-specific determinacy keeps that requirement proportionate: the relevant question can have one answer even when another part of the model is unresolved.

Direct physical enactment, empirical identification and model-based derivation provide different needed results. A supplied model is enough for the conditional derivation. Applying that consequence to the world additionally needs a suitable connection between action, model and observations. This arrangement lets a theoretical construction contribute immediately while exposing the particular additional result its physical use needs.