I guess that it's a bug. We all have more or less access to information, more or less training and experience in assessing information, and more or less free ti

I guess that it's a bug. We all have more or less access to information, more or less training and experience in assessing information, and more or less free time and/or psychic resources for dealing with it all. So there's a tendency to take shortcuts. In a good way, makin g intuitive leaps. In a bad way, getting stuck with our preconceptions. And then, as you say, there's the social aspect, identifying with our tribe, hunting pack, or whatever. Wanting acceptance and approval from our peers.