Many a person has missed their stop on a bus or train at one time or another because they were engrossed in a weighty conversation or a book. But when the pilots of Northwest Airlines flight 188 became distracted it had more serious consequences as they overflew their Minneapolis destination by 150 miles. "They were in a heated discussion over airline policy and they lost situational awareness," the US National Transportation Safety Board (NTSB) explained. When the pilots got their "situational awareness" back they turned the Airbus A320 around and landed it safely on Wednesday evening, apparently without any of...