How do we know what we know?

Simple enough question but one whose answer could change how people interact, and hopefully eliminate the polarizing affects of bis.

When we listen mostly to people who already agree with us, our pre-existing convictions get fortified, and we start to think that those who disagree with us are evil, dumb or duped. Is it any wonder that our politics are highly polarized, so much so that it sometimes seems as if Democrats and Republicans don’t merely disagree but live in unfathomably different universes? – Bloomberg

This article starts a good discussion on the ways we can build a healthier political environment and obtain a better understanding of what motivates us to act.