Maybe so but it is said that evil manifests itself
In Human form as blackness in the Shape of a man,Christians
Call them demonic apparitions and in Hoodoo we have demons like the Black one,or Black Rider and many more names who grants wishes in the form of a trade,We can open doors to bring these things on ourselves one way is callings or evocations working without proper protecting and banishings rituals
Or simply it can be a shadow trick
A trick of the mind,one can not know what someone has had the universe bring him via comouter screen we have to be able to see what you see and that is impossible.