Comment by yjftsjthsd-h

> There is still a valuable lesson for the developer here though - double check everything, and don't screw up.

"Double check everything" is a good lesson, because we all can and should practice it.

"Don't screw up" is not useful advice because it's impossible. There's a reason we don't work like that... Who needs backups? Just don't screw anything up! Staging environment? Bah, just don't screw up deployments! Restricted root access? Nah, just never type the wrong command. No, we need systems that mitigate humans screwing up, because it will happen.