The tearful "Why do you have to be right?" sort of behaviour - can of course be manipulative behaviour in itself.

Lots of other good comments above too.

One point to make is that at one time, there was a lot of effort invested in something that has now lapsed - the study of what physical gestures to make when making a speech to emphasise your point. A sort of Victorian era Body Language, which they carried to extremes, but which is based on natural impulses, but that many of us have to be shown explicitly in order to learn.

In a forum such as this, tone of voice, body language, etc are absent.

Robin