C.39.RO:4.1 - Recover the useful construction

Follow how the existing case obtained its result. Identify the material or values used, the operations performed, their dependencies and the reason the result answered the question.

Select a receiving use that needs more than the original answer. It may need the same transformation on another input, an intermediate result for another operation, or a way to adjust the construction. If the original result itself suffices, use it and stop.

A trace can reveal that the apparent reusable step depended on an unreported contribution. Recover that contribution through B.5.RC or the relevant subject Method before building on it.