Yes, but would you or your mother or your next door neighbour get on an airliner that was single crew?
I would be VERY uncomfortable with one, no matter how good the automation. If they're talking about designing a flightdeck with the bunks within the secure area up front, and allowing a system to monitor a third relief pilot to allow him to work a cruise period whilst the others rest, then it's not so out of the realms of safety.
The level of monitoring of the awareness of the third pilot would have to be foolproof mind. A big automatic stick that smacks him/her round the lughole every 20 minutes might just do it
