Sure, we have to spread the truth. But that only works on rational, relatively healthy (mentally) people. It will do absolutely nothing for those diseased ones. Witness the GOP. Using the analogy of physical health again, telling someone to wash their hands doesn’t help when that person has already gotten sick and is spreading the disease. In addition to entrenching truth in education and public discourse, we need to take more action to actively stop the deluded from spreading their lies.