I don't really see this distinction made clear anywhere in the article -- just analogies drawn to externally-mediated arguments. And to what extent it's made I

I don't really see this distinction made clear anywhere in the article -- just analogies drawn to externally-mediated arguments. And to what extent it's made I think it's inaccurate to describe all arguments' violence in terms of a third party's actions. Many arguments without an external mediator are sane, deliberate and productive.