You are dancing around half-facts. Who says 2nd would hv made any diff ? There will always be toilet breaks. 2nd didnt make a diff in Egyptair, Malaysian. 2 well-willing but so clever pilots also managed to kill a planeload in the Ethiopian 737Max mishap. Just go through all the accident reports and tell me pilots aren’t a weak point. No different from road traffic. I get frustrated that fact-driven pros like pilots refuse to acknowledge the facts when (they think ) money is at stake