| A revised description turns a known mismatch into “unknown.” | Use the retained subject facts and new description to answer the comparison directly. |
| An old pass is copied to a subject that may have changed. | Recover current grounds or state the unresolved question. |
| A completion entry is taken as evidence that work happened. | Obtain the observation or competent result on which the answer depends. |
| A negative answer automatically orders corrective work. | Separate the comparison from the decision about subject, description and use. |