24. Incorrect Flat-Earth Theory: Spirit Levels Indicate That The Earth Is Flat
A spirit level is an instrument that indicates if a surface is horizontal, vertical, or somewhere in between. The device is frequently used by masons, carpenters, and other trade workers. It comes in handy when doing manual work to make sure things are leveled. But what would they do if they didn’t have access to such a thing? Would they just eye something up and hope for the best? It’s a good thing they do have such technology, so they don’t have to play the guessing game.
A person goes by the name of D Marble, who is a YouTube flat earther who used a spirit level on a plane for a whopping 23 miles and used that as evidence that the Earth is flat. Even though that short of a distance would not make a noticeable difference in terms of curvature. Maybe he should try another experiment by putting a boat in the ocean and watching it as it disappears off in the distance and then explains it.