Hrm, what you are suggesting sounds like some kind of conversation back and forth between 2 people. Like a chat system or something. Issue is, you are talking in an environment where everyone can interject, and everyone has a strongly felt opinion. Just look at any news show "interview" between 2 sides of an argument. They tend to devolve into shouting matches of who can drown out the other side without getting smacked down by the host.