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Is Antarctica self-sustaining?

I'm pretty sure the person you're replying to was saying that the original speedometer mechanism in their 1955 car is accurate to within 2-3 km/h of the speed reported by GPS, and thus suggesting that this pre-GPS mechanism ought suffice for the subway / be better than whatever they currently use.

I once sat next to a SkyWest pilot on a flight. I was asking him how they assigned pilots and crews to flights. He told me that they actually had an internal auction system where crew members bid on "trips". A "trip" is a sequence of several flights over the course of a few days to a week that will all be crewed by the same people. Individual employees were allocated "money" to bid with (not real money, of course) according to seniority, so more senior crew would almost always get the most favorable trips, e.g. those composed entirely of non-redeye flights, etc.

In some places (i.e. the U.S. iirc), COVID actually caused a mild baby boom rather than suppressing childbirths.

I think what you're suggesting is that because we know the angle between a pair of stars, we can use that to infer the angle to the horizon by measuring the distance between each in pixels.

I don't think it's a safe assumption that there is a linear relationship between the angles. Like, two pairs of objects in the image, in which the angles subtended by each pair relative to the viewer are the same in real life, may not be separated by the same number of pixels in image space depending on the lens used.

Furthermore, this could be thrown off by even a small hill or mountain obscuring the astronomical horizon.

Alternatively, oh no you got banned for spreading factual information like there is insufficient evidence to rule out the possibility of a lab leak, so now you'll be relegated to places where you can have no impact on the public discourse.