I agree Pete we cannot know the answers,and i think that is what makes people reluctant to talk about things is fear of being cast out of social groups,or even the whole of society. We live in an age where things that are not scientifically proven are derided,in our society. yet Science has failed to prove that it doesnt exist either, in fact more recently quantum mechanics/physics seems to point to errors in some of the established laws of physics,and suggest much more that it is possible.
We are lucky because derision is all we face,in the past and in some modern day countrys speaking of a possability other than that decreed by the powerful can have much worse consequences.
I would also not mess with ouija boards,but i,m not afraid to walk round dark corners except in the context of some ill intent from humans very much alive,
I have seen "ghosts" all my life and as a child didnt think it was unusual and obviousely neither did my mum or grandma who brought me up, but i have no claims to be a medium they are just there,if something moves in my present house it will be Carrie the former resident with particular views about where things should go and where her picture should be hung, but the ghosts have not been my loved ones that have passed, although i have had signs from them which have been repeated and convincing, but it feels very different,which makes me wonder whether the "ghosts" we see are some sort of phenomenen that one day quantum mechanics will explain,maybe a parallel universe in which those people are living, moving things around throwing things maybe we appear as ghosts to them, or its some sort of anomilly in which we see a mirror of the past not an illusion because its real enough to photograph and shared by others, but something which is quite separate from signs from our loved ones.
As humans we always seek answers to questions and demand explanations,accepting that we dont know the answers is a big leap which is a very liberating thing once taken because once you believe something is possible then anything becomes possible, and science and neurology becomes one of a large group of possabilitys rather than a definitive answer, so if i believe in quantum physics and an afterlife, then i can also believe in god, re-incarnation, amimal spirits,crystal healing,shamanism, ancestral gods paganism or fairys at the bottom of the garden without becoming a member of any religion or set of followers,or needing proof of one idea above the others.