Yes, considered sacrosanct. However, my point was that if you skipped one, it's not a certainty that it would result in death. So if a captain said they should

Yes, considered sacrosanct. However, my point was that if you skipped one, it's not a certainty that it would result in death. So if a captain said they should skip a checklist, the first officer might defer to their judgement and not oppose that decision. I was responding to a comment where it was implied that the decision was a definite life-and-death decision.