B.5.FM:10 - Architectural Rationale

Model construction and model use often develop together. Trying an operation reveals which distinctions are missing, while the revised distinctions permit another inference. The method therefore keeps selection, relation construction, expression and consequence in one connected reasoning move.

The heat case depends on separating temperatures and locating an intervention along a path. The vessel case requires coupling two interacting media. The counting case creates classes from permitted operations. Their shared method is the construction of an inferentially useful account; their subject premises remain different.

B.5 coordinates the overall inquiry. This method develops its model-building contribution. B.5.4 gives a narrower entry when an available concept needs a situational interpretation. C.29 supplies mathematical representation choice. A.3.3, C.16 and A.6.3.RT supply state, measurement and expression construction when those questions occur within model building.