Interesting take, and most probably you are right. But this requires at least two people with a above-the-average emotional intelligence. And in our trade, in my opinion and experience, it's not easy to find people that excel in both emotional and practical problem solving intelligences. So, having a profound technical discussion in a team without heating it up at least a bit, it's difficult. Now, it can heat up and then it can be like nothing really happened, because as time passes and people can reflect on it, they soon realize it was just a technical discussion; but in the heat of the moment if you have the ego strong enough to defend your position, most persons will heat up as well.