Here Is Your Answer: Cognitive Dissonance
Also: The mind has a Self-Protecting Mechanism that blocks-out information that may be too unpleasant.
That is why many people would say: I don't want to talk about that.
Because it is unpleasant, emotionally disturbing and can be hurtful.
People like their "Emotional Comfort Zone".
You take them out of there and it is like taking a fish out of water:
The fish wants to get back in the water immediately.
It takes a person of very Strong Spirit to deal with unpleasant knowledge.
But some of us have become Flying Fish :)
RON PAUL RVOLUTION - http://youtu.be/jvUbG4Z7AhQ