NOT.3:4.4 - Perform the reading and locate where it depends on additional knowledge

Take an expression whose relevant parts and input values are supplied. Carry the reading through to its stated result. At a step that cannot be performed, distinguish a missing input, an undefined interpretation and an unavailable operation. These lead to different repairs.

Compare the result with the intended consequence under the subject account. Repair an interpretation rule when it yields a different answer. Repair the reader preparation or access when the rule is usable in principle but cannot be carried out under the current conditions. If the subject account itself leaves the consequence unresolved, return that question to the corresponding mathematical, physical, computational or other practice.

When more than one reading route is offered, perform the routes on a case that could expose a difference. Establish the agreement needed by the use, or explain why the routes answer different questions. A route that only returns a final value may lose the dependency structure another operation needs.