Earlier quoted context omitted.
> the controller in question was working both ground and air control simultaneously due to staffing shortages How many planes land at LGA in the middle the night? One controller overnight is completely reasonable.
Can a single human being reliably and robustly maintain a safety-critical system alone under any circumstances, ever? Ever?
I think the better question is how you get a system in which people are only responsible for any one facet to get the same performance out of people that a painter can get out of himself when he's setting up his own ladder that he personally has to climb on.