Originally Posted by
Voldmer
I have recently read a book by Robert Moss, "Dreamgates". He appears to have made half a career out of that same belief. At least, the book is partly devoted to the idea that, in dreams, we may actually interact directly with those, who have passed on. And they may be completely unaware of being dead, because it seems like business as usual from their perspective - they are dreaming on!
More generally, there has long been an esoteric idea that there is an "Astral plane", which is teeming with life (including the physically dead people), and which may be entered into in an out-of-body experience. And some people do not distinguish between OOB's and lucid dreams.