Ideology Does It Backwards

"Do you hold the position for ideological reasons, and then cast about for anything to justify the position, or did you come to a particular position because of logic and evidence? When one justification is refuted, does that modify your position, or do you just slide over to another justification? Do you acknowledge the points on the other side, or just pretend that the issue was never about those points?"

http://theness.com/neurologicablog/index.php/ideology-in-search-of-a-justification/