Philosophy
The Epistemology of Disagreement and Peer Conflict Resolution
Quick fact
Philosophers call someone who is roughly your equal in intelligence, knowledge, and reasoning ability an 'epistemic peer'. When such a peer disagrees with you about a factual matter, it can be a powerful piece of evidence that you might be wrong.
Why this is interesting
Imagine you and a brilliant friend, both equally smart and informed, look at the same evidence and conclude opposite things. Who is right? And more troublingly—should you change your mind just because they disagree?