I don't see biblical literalism intersecting with the flat earth. It may be some of the same people, but I don't see anywhere that a literal reading of the Bible would drive you to believing that the earth is flat.
I have been rewatching the documentary I linked since I wrote that comment and you are right. I got my wires crossed with another video[1] of his, about a group of geocentrists who tricked high profile physicists into making statements that they could edit into a pro-geocentrism documentary. That group was comprised of biblical literalists.
But as you said, there is a lot of overlap between the groups. Pretty much all flat earthers also believe in geocentrism, though most of the time not necessarily biblical literalism.
Geocentricism and flag-earthism are very different things.
Looking up at the night sky in Europe, you’ll see a dome shaped sky, spinning nightly around a still point. The planets will “wander” not going with the general rotation.
The appearance of the sky suggests that both earth and sky are spherical.
If they earth were flat, we’d see the entire “dome of night” - all the northern constellations - all of the night. They wouldn’t appear and disappear over the course of 24 hours.
Simple, naked-eye, stargazing can easily disprove the flat earth theory.
Geocentrism is a bunch harder problem to solve. Naked eye star gazing strongly reinforces a geocentric universe.
In fact, naval officers are thought celestial navigation using geocentric cosmology, because the additional accuracy of heliocentrism isnt helpful when stranded on life raft. No naval office will have sextant and accurate clock, but not a gps device.
So flat earth defies common sense and plain sight observations. Heliocentricity is much more complicated.
If I recall, it’s impossible to prove heliocentricity with the naked eye- telescopes are necessary.
