This is why I don't like getting into online debates... most people seem wholly uninterested in the (seemingly to them) blasphemy that is "other perspectives that aren't mine." To me, continually stroking your confirmation bias just proves you're not really as smart as you think you are. And indeed I think the Dunning-Kruger effect still applies to "smart" people.

You don't stop when you are estimating your ability correctly; as you learn more, you gain more awareness of your ignorance and continue being conservative with your self-estimates.

What this behavior has led me to do is basically only challenge people who are actually asking a question, because then there's a chance they might be willing to entertain other perspectives than their own. But if I say something and get a matter-of-fact response by someone with an obvious god complex... it's like they're not interested in mutual understanding, they just want to "win" the argument by asserting things loud enough until they're believed.

But when I see people being straight up dogmatic and preaching walls of black-and-white opinions as if they're somehow infallible and that there can't be any other perspectives... I just see incompetence. But it is frustrating because you want to set the record straight, because you know others are going to believe the louder person... but there's really nothing you can do about it. One time someone tried to argue with me that "cloud storage does not exist." All I could do in that moment was just ignore them and move on.

"As a rule, strong feelings about issues do not emerge from deep understanding." -Sloman and Fernbach