Bigdaviet.
The situation envisaged is a completely automated aircraft of the future, capable of controlling all movement from departure gate to arrival gate. The single pilot is there to override in the 10E-9 scenario where the computer can't cope. The chance of the pilot having a total incapacitation at the same time as the computer needs his input is infinitesimal - equivalent to both pilots having a simultaneous incapacitation today. (He may, of course, have died from boredom.)