Yup, one of the things we care about is making the process as painless as possible, so one one groans if someone says "let's do a premortem". For postmortems,

Yup, one of the things we care about is making the process as painless as possible, so one one groans if someone says "let's do a premortem". For postmortems, there's always existing risks that people knew about, but I think they're still helpful to identify which of those risks are actually causing the most pain and up their priority.