"And what's the use in that? Yes, all right, this is very dramatic and all, but it's also incredibly primitive. You can test the limits of the human body much more efficiently that trying to join the spinal cords of two people - all that's going to do is kill them in a relatively short order, and you won't find out anything about actual pain tolerance," Herbert argued. "Or whether co-joined bodies can survive, since where they've attached them is far too high up. You can't expect two sets of lungs to work properly off one fused spinal cord, that's just bad medicine!"