Ivan Seeking said:
Please provide evidence to support your claim. Statements of faith cannot be stated as a fact.
OK, Here is the argument.
Point 1. I take "credible" here to be in the context of science. I.e. repeatable empirical evidence.
Point 2. The semantic meaning of "ghost" I am taking in the usual context of a disembodied spirit of a once living person.
Point 3. The existence of ghosts presupposes a dualistic reality, i.e. both the existence of the material world and a spiritual world. (Note the gnostic version of the material world as "illusion" and only a spiritual world is invalidated by the positivist outlook. Its real because we experience it. The material world is the world of systematically classifiable experiences. Illusion= sensory perception contrary to material reality, we identify illusions by being systematic in our observations and so a.) if there is no reality to be contrary too you can't have an illusion and b.) systematic observations cannot be contrary to themselves.)
Point 4. The manifestation of ghosts presupposes that the spiritual and material world may interact and thus that we may through repeatable experiment affect and observe this "spiritual world". This either through material manifestations of ghostly effects (emitted photons and such) which we can record or more directly the fact that a "ghost" is supposed to formerly be an occupant of a material corpus which it affects and is affected by during its life, or that a ghost may directly influence the spiritual component of a living person.
Point 5. Such interactions would most likely have been measurable and observed in the laboratory. Given they interact we really cannot draw a line between material and spiritual realms. One is really just supposing an extension of the empirically observable universe beyond what we have empirically observed in our history of systematic investigations of nature. Its like asserting that an elephant has been living in your back yard for years and you just haven't noticed the footprints.
Point 6. The "ghost" idea has very strong emotional baggage in our culture as it ties in with our fear of death and sorrow at the loss of family and friends who have "ceased to function on the material plane". Thus stories tend to be wrapped around expectations and fears, subject to intentional fakery, exaggeration, and out-right delusion. All of this undermines any credibility a story may have.
Point 7. We're talking
Ghosts here fourkricesake! Do I need to cite references to argue that "credible stories of Santa Claus" and "credible stories of the Easter Bunny" are likewise oxymorons?
And if my position here offends your belief systems then that's just tough cookies. Get over it.
By the way there also is no such thing as the Tooth Fairy! So there!