An animal is also terribly inefficient at converting water and feed into human-consumable nutrients, because it's optimized for survival and reproduction.
The vat based solution is more scalable in the long run, and not impossible (we do it with beer).
> An animal is also terribly inefficient at converting water and feed into human-consumable nutrients,
I have an old book somewhere that says the milk cow is the most efficient means of converting a rocky hillside covered with grass into human-usable protein.
The vat based solution is more scalable in the long run, and not impossible (we do it with beer).