The more important danger to guard against is unjustified dismissal of opposing viewpoints

From Are People Too Dismissive of Others’ Arguments, or Not Dismissive Enough? by Ilya Somin

If you want to be a better truth-seeker, you should indeed work harder at taking out cognitive trash when it comes to arguments about issues on which you don’t have strong views. But when it comes to issues where you do have strong beliefs, the more important danger to guard against is unjustified dismissal of opposing viewpoints.