MNT.2:11 - SoTA-Echoing

For the question “Which task is worth performing for this failure?”, this pattern adapts the applicable/effective task reasoning of NASA’s historical 2008 RCM guide and the mechanism-plus-decision-model line discussed by Arts and colleagues in 2025. It rejects a technology ladder as the policy rule: the comparison table and complete-response reasoning preserve corrective, hidden-function and support-limited cases that the ladder obscures. More demanding models remain useful when their decision gain warrants their effort. Neither source supplies a universal interval or permission rule. Reopen when failure behaviour, warning time, restoration effectiveness or the operating consequence changes. See the RCM task discussion and maintenance optimization account.