Why should the battle lines be drawn in terms of conclusions?

Suppose I agree with someone's conclusion, and disagree with them on the method used to reach that conclusion. Are we political allies, or enemies? That is, of course "politics" is the answer to 'why should the battle lines be drawn this way?'

Now, for Tyler as a pundit, the answer is different. Staying in an intellectual realm where he thinks like the other people around him makes it so any disagreements are interesting and intelligible.