It is naive of people to think we are the only existence of life. For human beings to know and think of such things as Ghosts; Spirits; Angels; Fairies; Extraterrestrial, etc., means they must exist, in some shape or form. Did they not, then it would be impossible to think or perceive them in the mind. Ancestors of ours have taught us of such things; we have learnt about them through generations of knowledge, experiences and findings. It is naive not to open the mind, and to see beyond what our eyes show us.