Good thought. I meant the common usage which would be people are willing to consider new ideas, open to other points of view, accepting of information and willing to change a decision when new information comes to light, etc. I'm very high on "openness" in big 5. It's my highest score. Then again, am also an INTJ and people may perceive INTJs as unwilling to accept other points of view. It might have something to do with introversion, Te communication style, or that their reasoning often isn't transparent to others.
First of all, I feel like I need to explain that I am not one to generalize. The only people whom I think this applies to are individuals who have already proven to do so.
Probably just the loudest and most unhealthy minority.
I just don't bother to argue with certain INTJ because they'll just open up all sorts of logical fallacies, irrelevant points, stone-walling, ad homonyms and basically getting really emotional and reactionary. Most exasperating is that these type of INTJ do not seem understand the concept of opinion v fact; ie the way they will get into a serious and vitriolic debate over shit like " Who is best girl" and have an even harder time with the idea that " I like/dislike does not equal is objectively good/bad." and their reasoning is very transparent; the ol' " I replace emotion with logic" reasoning; Ipso facto, I cannot possibly be emotional while I am screaming at and insulting you.
On the other hand I have met some very even tempered and reasonable INTJ who's debating skills greatly impress me. I do wonder what is the difference. Are the former just the stereotypical nerd in Mother's basement, and is therefore is not used to being challenged or having to work with others? In my own experience, that is the conclusion I would draw.
Or maybe I;m putting the cart before the horse. Maybe that sort of life style can fashion one into a very unhealthy INTJ? Hell, maybe this is what happens when an ENTJ becomes lonely and depressed too.
In response to the thread; I really think it depends more on your environment than type. I think that seeing a variety of people and places and understanding that so many realities besides your own exist is what shapes one's world view. If someone never leaves their small town and is only surrounded by other of the same demographic they will have a harder time believing that situations are different for other people.
Hence the " Eh, I've seen it all." sort of attitude that more open-minded have.