Some people really like to argue and are determined to “win.” I had that happen with a friend who became quite upset by something I said. I was surprised by his vehemence and after trying to clarify what I meant, he just got angrier. I realized then that there was no discussing this with him in a calm rational manner. Instead of trying to explain further, I just thanked him for expressing his views. He kept on going…. Because he was a friend and I valued the relationship, I just listened and made non-committal responses, “I didn’t think of that; I can see your point; I appreciate you sharing your experience.” By just staying calm and accepting, he eventually let it go. (Under different circumstances, I would just walk away.)