Matthew Inman of The Oatmeal is at it again with a smart, funny, and very relevant look at how we construct our beliefs, build our reality tunnels, and why we react so forcefully when the core assumptions of that belief system are threatened.
Read the rest of it. Nice touch that there are two version, one with colorful language and one clean, "classroom-friendly version."
David McRaney's You Are Not So Smart did a wonderful 3-part series on the backfire effect. You can access the first episode here.