Many incidents are INDEED fabricated and I believe so as well. However, it is UNCERTAIN as to whether ALL are fabricated. And also, what we are talking about now is something which may be unrelated to science. If there are actually 'PROOF' to ghosts, then it certainly would be scientific already. Also, I don't really know how you would be able to get proof for ghosts because many evidences or 'proof' are always deemed inconclusive. What would you then, consider as PROOF for ghosts? Pictures, videos, a trustworthy person, ghost busters, or something unexplanable by science? What is proof?