Economists do it with models. Mental models. Mental models that fall to pieces the moment they are faced with the cold light of reality. - Me
Told you, dude. Sea lions.
BTW I find it works just as well to repeatedly reject comments from anyone who pisses me off, or who I don't know. Eventually they get the idea and fuck off.
Takes them a while though because they're idiots.
And therein lies the rub. My method is surgical and rapid. I also actively encourage them to have their all-important last word.