I believe we're biased by what we belive...and don't tell me otherwise

I listened to an interesting freakonomics podcast that asks how do we know what we believe is true.
It supports my belief that the more educated one is in a subject, the more closed-minded they become to other ideas. The more energy someone takes in taking a stance, the more emotionally invested they become.  There often is pressure to conform, too. The podcast also points out that more educated people are better at finding data that supports their beliefs (confirmation bias).

One thing I found interesting was that a guest - professional skeptic Michael Shermer - treats evolution as de facto truth.  I guess it goes to show that nobody can be skeptical about everything. :)