Comment by Grevling

I was in ATC training in the 90s and this was discussed among teachers and ATC personell. The common saying was that pilots would disappear from cockpits before ATC personell were removed, at least from tower control. There are typically three kinds of ATC: Tower control, approach/departure control and area control for controlling planes when cruising. I haven't followed this in years but my impression is that better monitoring equipment allows for fewer area controllers to control bigger areas. I believe area control is the most likely to get automated but this is quite a guess. Approach control is about using radar (or no radar, procedural approach control is a thing) lining up planes to land on a runway. The planes are handed over from approach to tower control when the plane is on final approach. There is also ground control for taxiing on larger airports. But, not least. Do not underestimate the value of having trained personell using radio to great effect. Any belief that modern touch gadgets are better than radio is silly. Humans are also very capable at speaking while performing advanced tasks.