My friend works for a major aerospace corp and likes to engage (politely) with people who believe it's impossible to go into space and so forth, in hopes of pos

My friend works for a major aerospace corp and likes to engage (politely) with people who believe it's impossible to go into space and so forth, in hopes of possibly educating someone whose mind isn't already made up. I was surprised to learn there is a very large proportion of flat Earthers in this group. They genuinely believe what they say. They also argue using every logical fallacy possible. He said he only had one genuine conversation, i.e. with someone trying to understand his argument and not just refute it, in several years. Numerous people with these beliefs show up to ridicule the very idea of space travel or a spherical Earth on pretty much every single relevant video and article ever that has a comment section. That would seem to indicate that a lot of people hold these beliefs.