S'mon said:
I don't agree with this either. If you work in the "education industry" you may be likely to be inculcated in the views prevalent in that industry, and clearly there is a correlation in the US between education level and voting pattern, but I don't think (over) education per se causes close-mindedness. I suppose it can cause arrogance and a lack of appreciation of why the less educated think as they do. It can also cause open-mindedness and awareness of a variety of possibilities. I don't think PhDs are more close-minded than BAs, or BAs are more open-minded than high school graduates, etc.
Edit: OTOH... maybe you're right.
Well, now you start getting into mob mentality and group think/speech. IMO, I think that many highly educated people look to opinions held by other highly educated people. This tends to reinforce their own belief system.
Now, if we look at a university, then you can see what could become a major problem. If the majority of professors and administrators at an institution hold a certain set of common beliefs, then those beliefs become a common discourse. The administration then seeks to give structure to the common discourse, which becomes institutionalized. From that point, it becomes easy to hire people that will fit within the common structure. And the very low turnover rate in government employ mean that few new ideas enter into the mix.
IMO, political parties do very little to introduce people to new ideas. People are challenged by new ideas on a personal level, such as with friends, family and co-workers. I do not know anyone who chooses friends based on politcal bent. Most people choose friend's based on common interest: RPGs, Books, Television, Movies, Barhoping, Sports, Work, or Family. Ulitmately, people spend a good portion of their time at work, so water-cooler talk tends introduce you to most different/new ideas.
So, if a university settles on a certain structure and common discourse, and a majority of people share those thoughts and ideas, then they are not getting introduced to new/ dissenting ideas at the water-cooler. Suddenly, the only path to new ideas if following a path that leads further from the mainstream. And, since you're a prof with a good education, you're ideas have to be more right than the mechanic who serves you.
It is a collective mentality that never serves to challenge you.