Check this out:
http://www.nytimes.com/2012/04/04/bu...e-airport.html
So crew becomes more and more and more of a monitor. But who does what when data is lost or is unreliable?
I can just see Hal transmitting to others, "Our GPS data is unreliable and we're handing the jet over to Dave".
Years ago the wiz kids wanted a ground avoidance feature built into our Viper FBW system. The thing would pull us out of a dive when close to the ground. We humans fought the idea and explained that there were conditions when we might violate the coded criteria. Maybe press a bit to ensure a good hit or maybe we were trying to get real low for escape and evasion.
To appease the whiz kids we agreed to a big flashing "X" on the HUD. A year later one really agressive pilot flew right thru the big flashing "X" and augered. Least he didn't have 200 SLF items with him.