C.11.MV:4.4 - Minimal Constructed Worth Replay
Continue the constructed temperature-sensor review case. The decision is how Calibration-Team-A should review reports through day D30. Alternative ALT-M retains admitted M-Unit-Review-1, description edition 4, and the manual conversion table; for the present review decision it uses the representation repaired in A.3.1.CC. Alternative ALT-L uses the current lightweight checklist that verifies tolerance but has no explicit unit-normalization step. ALT-S stops the proposed Method change and keeps the present release hold until a supported permissible continuation is available.
The evidence for ALT-M includes the two earlier admitted A.3.1.WT occurrences of M-Unit-Review-1 performed by the same qualified Reviewer-17: seven minutes on the ordinary same-unit report and twelve minutes plus one table lookup on the mixed-unit report; both decisions were correct and the mixed-unit release was stopped. A separate constructed matched replay of ALT-L, admitted as W-L-Rep-1 and W-L-Disc-1 under the same holder, team, report pair, and window, took five and six minutes. It accepted the ordinary report but failed to expose the mixed-unit mismatch. The replay supplies no causal claim beyond these occurrences and no evidence about another holder or automated support route. The two earlier A.3.1.WT observations are not trials of the later representation repair in A.3.1.CC.
| Position | ALT-M | ALT-L | ALT-S |
|---|---|---|---|
| domain result | Correct decisions in both observed reports; mixed-unit release stopped. | Correct ordinary decision; mixed-unit mismatch not exposed. | No additional report released; mixed-unit risk remains contained but current release Work stops. |
| burden | Seven and twelve minutes; one lookup; current capability and table required. | Five and six minutes; lower observed burden. | Delay and missing release result; no new review burden. |
| side effect and opportunity | More explicit trace and stop; consumes review time. | Faster but leaves the named unit hazard exposed. | Preserves safety while displacing release and comparison Work. |
| reversibility | Checklist and representation can be reverted while evidence is retained. | Already current; reverting loses no transition Work but retains the exposed hazard. | Reopen after the missing comparison or support basis is supplied. |
| evidence strength | Two constructed teaching occurrences, not field evidence. | Two constructed teaching occurrences, not field evidence. | Consequence follows from the stated stop; downstream cost is unmeasured. |
Return branch: require ALT-M for reports whose sources can use different unit systems; retain ALT-L for the bounded same-unit situation. The discriminator is recoverable source-unit variability, not reviewer preference. Retain ALT-S as the stop when that variability cannot be recovered. No earlier decision about this unit-variability branch is supplied in the constructed case. Return the branch to A.3.1.MV as new applicability entry APP-UnitReview-TeamA-D30, recording the three alternatives, the source-unit discriminator and the D30 window. It records when to use the existing alternatives; it changes no Method identity and claims no contradicted predecessor. This result covers the stated conditions through D30. For a later reliance, use A.10.1 to identify which premises remain applicable and which qualification, condition or evidence gap actually needs renewal. A real expiry still limits use; new field investigation is selected for its useful obtainable answer, not merely because the date advanced.
This result does not show that ALT-M is universally superior or caused every correct decision. It demonstrates why lower burden alone cannot compensate for the current release stop. The merits of that stop are a separate question when they are disputed; use §4.5 for that appraisal.
C.11.MV:4.4.1 - An Adequate Choice Before the Review Window Closes
Suppose the current report sources have an inspectable same-unit schema, the reviewer and support remain qualified for this use, and the existing comparison covers the present release question. Keep ALT-L for that bounded case and preserve the ALT-M branch whenever source-unit variability matters. Another forty-minute replay would displace review of a newly changed report before the deadline without changing this choice. The recommendation is complete on the available basis.
C.11.MV:4.4.2 - An Unresolved Alternative with No Obtainable Probe
A proposed automated conversion route might reduce later review effort, but its contribution remains unknown and no permitted test access is available before the current decision. The existing ALT-M route still supplies the required review under its stated conditions. Retain the automation proposal for a later comparison, stop the unsupported present change, and continue the qualified ALT-M course. That decision leaves the automation comparison unresolved. Further investigation can be chosen when its obtainable answer is worth the full burden; retaining the proposal creates no trial commitment.