'I don't believe in you,' coupled with "I didn't know I was dead' is nicely linked together. think there is an assumption that death naturally liberates us from our intellectual and emotional paradigms, but we carry many things with us... If you go on thinking you're alive, why would you believe in ghost, even if the ghosts are now the living... :)

There was a ghost story that Robert Bigelow shared- his wife was the recipient... Apparently, he brought 'something' home from Skinwalker Ranch and his household was experiencing poltergeist like phenomena. The story he shared, his wife saw a ghost that walked up to her and it asked her 'why are you here?' before vanishing... I don't know- this made me think of that... :)