Well I've personlly, I've never seen any duppy, demons in my life. But there's so much evidence on TV shows like ghots hunters, where they have experienced evil spirits in houses, but they're not really a good example. Look into voodoo, they actually experience spirits inside of them, there's no way that they would be just shaking their body's up and down and foamin from the mouth if, Demons, lucifer, and these's things of the unknown didn't exist. Man all of u guy should go to a site called conspiracyarchive.com and go to New Age, it'll explain that allot of intiluctual thinking people atheists at that acknowledge demonic entities. But I deff believe that these things are real. If Satanists beleive in demons, and wicca people, people who study Magic and voodoo, then u must understand that these beleifs are much older than u, and will never go anywhere, they are true I beleive but not everyone will beleive the same. Bless!