I think the key lies in the vitality of one's openness to consider the other viewpoint; to lay down one's own facts alongside of the opponent's facts, and to watch the thumb of one's ego on the Who's Right scales as the facts are weighed.

Quote
You must not stay sleeping and dallying there in the house, though you built it, or though it has been built for you.
Walt Whitman, Song of the Open Road

You never change things by fighting the existing reality.
To change something, build a new model that makes the old model obsolete.
R. Buckminster Fuller