Looking into the behavior of light-waves as they pass through different types of media, for example electromagnetic fields and ionized gasses / plasma tubes that apparently exist in the lower magnetosphere. Many assumptions of cartographers are based on solar observations -- That's where we get our latitude and longitude lines from. They are imaginary lines based on observations of the sun. This video is intended to present evidence supporting the notion that light propagates across meridian lines (North-to-South) more readily than latitude lines, and in fact the "straight lines" ascribed to meridianal lines could actually be curved lines, and we wouldn't know the difference... I guess you'll have to watch the video to fully understand the point I'm making, so enjoy.