I'm a machine learning engineer so "unneeded input" is something I rarely consider as a valid statement. Oftentimes when you're arguing the merits of one approach versus a different one, you have to use your rhetorical skills to influence another party. You both believe you have the best solution. You believe your logic is consistent and complete.
Emotion is a very powerful signal during discussion. It's a counterpoint to logic; they work together. Rarely does logic by itself win anyone over. Trying to remove "unneeded" (who decides what an unneeded emotion is) emotion is folly. We're not Vulcans.
So, all things being equal and arguments having the same merit, the less polite and less rational person wins. If i am able to contain emotions and argue by facts only, I will be at disadvantage.
Emotion is a very powerful signal during discussion. It's a counterpoint to logic; they work together. Rarely does logic by itself win anyone over. Trying to remove "unneeded" (who decides what an unneeded emotion is) emotion is folly. We're not Vulcans.