Relatedly, some long structures that seek entirely straight have different lengths depending on the altitude you measure them. For example, an oft repeated tidbit is that the Lake Ponchartrain causeway is two inches longer when measured at the deck than at water level due to the earths curvature.
Yes these. Essentially anything that an unidentified user could push data to that would land me in regulatory trouble. I would want to host these things, but I don’t want to become a distributor of anything that would get me a search warrant.