I came across the following, which seemed pertinent to a recent comment thread discussion that I had with Andrew on Irresistible (Dis)grace, regarding whether and to what extent we can choose what to believe:
[I]t’s impossible to argue rationally that people can’t know reality, because any such argument would be self-defeating; it would depend on known truths and would therefore presuppose the proposition it’s trying to disprove. On the other hand, it’s also impossible to argue rationally that we can know reality, because any such argument would be circular; it would depend on known truths and therefore presuppose its conclusion. So there’s nothing for it but to make a choice—either you believe that you can know reality, or not.
leirbag75, “The Myriad Colors Phantom World Fallacy”, Prime Matter blog, May 3, 2018.
I think people who think we can’t know reality generally have some other agenda, some reason why it benefits them psychically or emotionally to believe that. For the vast majority, such an idea never occurs to them.