I concur. Incidents have many causes and different levels of failures, and "5 Why" documents make it too easy to target an easy or politically convenient soluti

I concur. Incidents have many causes and different levels of failures, and "5 Why" documents make it too easy to target an easy or politically convenient solution without needing to mention the other failings. Postmortems in general are fantastic, though. "Here is what (not who, what) went wrong, here is the list of things that made it go wrong, and here are the steps we're taking to make sure that this can't happen again or will not be as bad when it happens again."