If they get loud, you get quieter. It makes them look irrational and gives you the moral high ground.
Identify the shared goal. "We both want the project to succeed, right? So instead of my way or your way, let's look at this third data point." 6. Know When to Walk Away How to Win Every Argument
People lose arguments because they let the topic drift. If you’re arguing about the dishes, don't let them bring up "that thing you did three years ago." If they get loud, you get quieter