Perhaps most paranormal activity is bogus, but there is some that is legitimate.
I'm not particularly psychic, but I have been outside of this physical body with full visual perception. And I've created several events of "mind-over-matter" -- or more accurately, "spirit-over-matter."
Doubt (the key active ingredient in skepticism) is a powerful source of creation. It is to the paranormal what water (rain) is to fire. What scientists don't realize is that they are creating, too, in an experiment on paranormal or psychic abilities. It's rather funny to see them "prove" to themselves that there is nothing to a psychic claim, when they are clearly tilting the scale back toward the status quo -- ordinary physical reality.