I've been in dev shops where, when a NULL turned up in a database column where it wasn't expected, the site was rolled back to a previous version, people were c

I've been in dev shops where, when a NULL turned up in a database column where it wasn't expected, the site was rolled back to a previous version, people were called in on the weekend, and a group of engineers spent hours trying to figure out why that NULL got there and how to stop it from happening again. It's not like a DBA couldn't have just run a quick UPDATE query to clean up the null in a matter of seconds... I see this as indicative that debugging production issues happens in non software engineering contexts as well, in spite of the fact that we're always told that their processes and procedures are so much more mature and robust than ours.