Went down the rabbit hole of flat earth beliefs, and apparently they think other planets are round but just not ours. Instead they think it's propped up on some infinite columns. Once I learned they were more willing to believe in columns than their own world being round, I gave up trying to understand them.
Propped up against the gravity of what? If Earth fell down the infinite columns, how long would it fall? What would be the difference? What are the columns made of? Can we mine them? So many questions.