The dissonance caused by not accepting experential evidence that conflicts with views held tightly. As Alan Arkin said, "We hang onto our belief structures as if they are real and tangible things. These beliefs. These huge hunks of granite edifices in our consciousness upon which we base our lives. It’s enough most of the time that our beliefs comfort us, make us feel part of a group — help us get through the day, never mind whether or not they are true."