|Canton Observer, March 13, 1975 (enlarge)|
First, she didn't believe that you could just conjure a ghost up unless it was directly seeking out contact. She also indicates that she believed, at least at the time of this writing, that ghosts were the direct result of a sudden or strange demise where the person wasn't aware that they had died. Which seems to be the theme of shows like Ghost Whisperer and many books on the subject.
She doesn't really go into detail on the man-made ghosts born of their own energy. Which would be convincing enough except that too many unconnected people have experienced the same apparitions without prior knowledge or a shared existence.
A personal testament to that is during my teenage years my family used to frequently see a lady in a white nightgown walk across the hallway from the bathroom to my mother's bedroom. One day a close family friend was over and suddenly asked, "Who is the lady that just walked by down the hallway?" Everyone looked at each other and said, "Did you tell him about the ghost?" Of course, nobody had.