If you say something to me, I will be polite. If you are rude to me, I will just be quiet. If you say something I don’t agree with, I will never argue, because I find most people have already made up their mind before they speak, so even if I try to argue with them, they will always be convinced they are right, and my arguments just provide new incentive for them to counter-argue. If you don’t agree with me, I will not defend my position. I will just be quiet and subservient; I will even admit I am wrong and you are right, because you have already made up your mind.