Talk:2519: Sloped Border

Explain xkcd: It's 'cause you're dumb.
Revision as of 13:35, 23 September 2021 by (talk) (Added comment)
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I would make the country's border an Alexander horned sphere. 03:21, 23 September 2021 (UTC)

At least this border doesn't have thickness. --Angel (talk) 04:48, 23 September 2021 (UTC) -yet 05:46, 23 September 2021 (UTC)

GIS: Geographic Information System, that are the systems where maps (and the borders) are defined. They won't care much though, because for them the ground information is the relevant one. Once you get into air, you'll get a problem, because if the border is very sloped, and not in average straight, then an airplane might still be in the airzone of a different country than where it's flying over. Which will cause all kinds of problems, security wise. Liechtenstein might loose all control over its airspace, yet their inhabitants want safety even from aircraft flying above them. Can't imagine that going well, but bureaucrazy is that: it creates paperwork when it is not busy enough with the procedures it already created. 05:46, 23 September 2021 (UTC)

Liechtenstein and air control is a bad example for the problems with sloped borders because it's quite often the case that the air space of one country is done by air space controllers of another country. In the case of Liechtenstein this is done by SKYGUIDE in Switzerland that is also doing it for southern parts of Germany (being responsible for the collision of two planes near Überlingen: 06:34, 23 September 2021 (UTC)

Wouldn't sloped borders also have interesting consequences underground when mining, building tunnels etc. ? 08:39, 23 September 2021 (UTC)

I introduced into the explanation a hint of the more precise problem with airborne geometry upon spherical (or, possibly, geodesic) coordinates. The shallower the angle, the more possible that the 'curves with the ground' altitude calculation is to actually wrap itself all the way round the Earth before (presumably), whatever altitude limit there is to make space the same upper edge as International Waters are to horizontal edges. Taking the Liechtenstein case, as above, you could easily enclose them in a 'pyramidal' (or wedged, if not applied from all around them) air-claim by angling over them - or greatly increase their air-claim over neighbours if the angle is away. With inverse issues for the Mineral Rights issue. You need to agree in advance what happens when angled boundaries hit perpendicular ones, and whether the 'rhumbs' projected from the border mash together when equidistant points on a crinkly border project their own air-distance line. And if it is from an agreed surface level datum or local ground level, with the complications that arise from both cases. (Yeah, I originally thought there were about four different bones of contention that need to be ironed out in the codicil on curvature, but I now think there's about six of them needing strict definition, not counting the compound cases which further may need specifying in advance or forever requirev adhoc arbitration.) And none of this even takes account of Relativity and curved space frame of reference that might very subtly shift whatever reference you just agreed upon, if you let it go high enough. 12:05, 23 September 2021 (UTC)

Should there be a part of the explanation talking about how GIS is already a nightmare? Because the hobby is "_new_ ways to make life a nightmare" 13:35, 23 September 2021 (UTC)