SketchyMagpie
Well-Known Forumite
Sometimes I will do the research and respond to him if he brings up something I've not heard about (like the "17,000 qualified scientists have signed this declaration" thing that turned out to be nonsense) just so that I'm prepared should I encounter that argument "in the wild" but when he's just repeating crap that has already been thoroughly dismantled, as with that last post, then it's not worth anyone's time to engage.