I have an idea for a research grant. Send researchers off to find the one person who changed their political position as the result of an argument of any kind. You know, the conservative who suddenly said, "Oh. I get it. You are right. You can't just assume that government is always ineffective." Or the liberal who said, "You mean you can trust businesses? I guess you're right."
We don't stay away from the topics of politics and religion in conversation because they are unrevealing or because they are not fascinating. We stay away from these topics because no one ever changes their mind on these topics. Their opinions have been formed about 4 years before the discussion starts. I don't think that I've ever witnessed a person changing his opinion about a political topic during the course of an argument or discussion. And I've been in and witnessed plenty such conversations.
If the researchers can't find that person, perhaps we could just divert all the money spent on news analysis into video game development.
Just an idea.