Telling your story out loud is the way human beings communicate. We don't normally think up words, translate how to spell them and then move our fingers up and down over this randomly arranged set of keys to make the same letters appear on a screen. ↗
No one would choose to be jerked randomly off task again and again until you have half a dozen things you're trying to get done, all at the same time. ↗
In debate, one randomly was assigned to one side or the other. This had at least one virtue - it made one see that there was more than one side to these complex issues. ↗