While composing this post on No Agenda Forums, an interesting problem came up.  How can I show someone their own biases?  They are obvious to me, but (by definition) the other person’s entire system of thinking is arranged in such a way as to find their biases valid.

After coming to understand the limitations of our built-in processing, this problem really bugs me.  What kind of mirror can I use to show someone their errors?  How could they show me my errors?  Assuming my reasoning is faulty, would I be just as difficult to convince, or does my experience with fallacy and bias give me any advantage?

I guess this is what keeps a skeptic up at night.