Failures are only avoidable if everyone does their job well. I have occasionally been called in the middle of the night because my peers put out something that

Failures are only avoidable if everyone does their job well. I have occasionally been called in the middle of the night because my peers put out something that wasn't really tested (and either I was more reachable or they were at a loss) or because a machine fell over that wasn't monitored as well as we thought.