One thing I've learned in my career: Whenever there is a failure, it's almost always caused by more than one mistake. The root-cause could be someone not paying

One thing I've learned in my career: Whenever there is a failure, it's almost always caused by more than one mistake. The root-cause could be someone not paying attention, but if that mistake can be disastrous, you shouldn't be relying on that one-point of failure. If "finding someone to blame" is the solution to a problem, your org has failed in more ways than one. I've had mixed experiences, but I find the orgs that set up roadblocks to prevent single-mistakes from causing issues are much better off.