The thought of one pilot in an airliner at this point still makes me feel uncomfortable. However the counter for emergencies is that the automation will handle that better too. The first officer may have much to do, but that’s with current automation. With future automation, it would probably be far less. Air France 447, mentioned by someone else, would be a very good example. And now that there is already one-button automation for landing an airplane from the point of the emergency enroute when there is one incapacitated pilot, it’s obvious that development and evaluation is going to continue.