It's interesting that INTPs are coming off as closed-minded and stubborn in an argument. I can do several 360 turns when I'm "arguing." XD
And argument is usually playtime for me, also.
However, I'm completely clueless as to whether a person is understanding my words or not, and the extreme conciseness can come off as rigid, but it's really not! My goal is just to be as accurate and logical as possible, even if my viewpoint is changing. (That doesn't really sound like playtime, does it? But it is! Oh, it is!)