> If anything, airplanes prove that machines doing most of the work and humans stepping in only when necessary is a proven model.
Airplanes have far less traffic to deal with. And the points at which they deal with traffic (e.g. takeoff and landings) is completely controlled by humans, including many humans outside of the plane.
Apparently pilots generally prefer to not use them. Not because they don't work but because pilots still need to be on alert and so its easier to just land manually.
They're used in low visibility conditions with relatively calm weather, but don't work well in bad weather.
Airplanes have far less traffic to deal with. And the points at which they deal with traffic (e.g. takeoff and landings) is completely controlled by humans, including many humans outside of the plane.