C.40.CD:2 - Problem

Work can keep attempting a solution after the question’s premises have failed. It can also make an easier question look like the solution of the original one. Conversely, a successful construction can remain confined to its first use because nobody develops the questions its new operation can now answer.

Problems and ways therefore need returns in both directions. The problem determines what a way must obtain; the attempted way reveals missing conditions, useful partial results, limits and further possible uses. Productive development preserves those connections through each change.