ATC is hundreds of functions and dozens of responsibilities like checking that the runway is safe to land. "Clear to land" is not just a turn of phrase, it is a check and verify that an aircraft with hundreds of people is relying on.
Air traffic is not a deterministic system, it is squishy and significantly more complicated because it involves humans, complex mechanical systems, and weather floating on top of a sea of limited resources.
Automating just the error prone radio calls would be a massive start.
Those could be sent as short text messages that appear on a screen in the cockpit, for the pilots to acknowledge receipt of with a limit set of responses, and would give ATC a lot more time to focus on their other duties.
Automating various functions seems like a good idea. But it's not going to remove the humans from the loop in the event of a future government shutdown, which is what the original suggestion seemed to be.
Also remember that ATC is vital for emergency situations. "Your distress call is important to us, please continue screaming into the void and hopefully a miracle happens.
The bigger comment is that these people are not documented or undocumented. To be either would require due process where such documents could be produced.
There are vastly different scales where the approximation is correct for newton vs general relativity. Perhaps you can define the scales that you are calling relevant so we understand what you mean.
The scale of galaxies? Which the original article is about? I feel like I need to spell out everything, but ok:
The article is about modified Newtonian dynamics (MOND), which is a theory that modifies Newtonian gravitation to fix some observed differences in galaxies' motion, without invoking dark matter. The original commenter then proclaims "haha, MOND cannot be right, because we know that Newtonian gravity is incorrect". Yeah, no shit Sherlock; it is "incorrect" because it is just a limiting case of general relativity. But that's completely besides the whole point of MOND, which tries to "fix" gravity at galactic scales, which is a Newtonian regime even with general relativity. MOND is trying to tweak the Newtonian formula at those extreme distances, and if it works, then maybe it can be worked out to be a limiting case of a "modified general relativity", just as Newtonian gravity is a limiting case of GR. Got it?
So spacetime (interactions between mass, space, and time) are required for any sort of precision explanation. If "extreme" means planet size masses, I guess, but I generally consider our solar system pretty normal. However we cannot explain the planetary motion of mercury without relativity, so define your extreme.
But sure, newton is good enough to handle most ground based scenarios where we only care about forces at low precision.
Air traffic is not a deterministic system, it is squishy and significantly more complicated because it involves humans, complex mechanical systems, and weather floating on top of a sea of limited resources.
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