Why do we need dialogue?

Excerpt from the PDF I found on the web. Why do we need dialogue?

On Dialogue Vs Discussion. Very thoughtful.

‘Discussion’ comes from the same root as ‘percussion’ and ‘concussion.’ It really means to break things up. It emphasizes the idea of analysis, where there may be many points of view and where everybody is presenting a different one—analyzing and breaking up. That obviously has its value but is limited and will not get us very far beyond our various points of view.

Discussion is almost like a ping-pong game, where people are batting the ideas back and forth and the object of the game is to win or get points for yourself. The basic point is to win the game.

In a dialogue, nobody is trying to win. Everybody wins if anybody wins. There is a
different sort of spirit to it. In a dialogue there is no attempt to gain points or to make your
particular view prevail.

A dialogue is something more of a common participation in which we are not playing a game against each other but with each other. In a dialogue everybody wins.