Humans can rationalise almost anything. They twist and turn facts and deny and show a real gift for remaining wilfully ignorant.
I need proper proof and believe in the scientific method. I think godpreachers, homeopathy, antivaxxers and climate change deniers are lying.
I have no problem with admitting things we don’t know. It’s fine to say we don’t know. But when we do know, and people still refuse and continue on, then, that makes them lairs. Lairs of the most pitiable sort, because they should know better.