I used to think, when I disagreed with someone, we were on a journey together to find out what the truth is. Maybe my understandng was wrong, maybe theirs, maybe it's something neither of us thought of.

But then I realized that most people don't think that way. It's more important to not be alone than to know the truth, and people tie their individual identity to their group identity - if a fact contradicts their group identity's approved list of observances, they'll take it as a personal attack. So I just say 'ok' now.