Every person I know who is one of those people that can’t be persuaded by logical arguments backed by irrefutable sources seems to have a powerful sense of ego/pride trending towards narcissistic. My father is like that, my stepdaughter-in-law, my former best friend, my kids former football coach, they’re all people think they’re smarter than everyone else, they still suffer from the same self doubt we all face but instead of facing those self doubts and finding teachable moments to learn and grow from, they instead doubledown on how great they are, and how much better than you they think they are.