Here's a wild theory!

I have seen an apparition. It was many years ago. It was of the "replay" type. It didn't interact with me, it went about its business. I was told many others had seen the exact same thing. I also found out the "person" had died tragically. So I believe. Now I have read, watched, amaturishly investigated myself for many years. Certain key factors always seem to be in place.

A. a trauma.
B. a certain area for sitings.
C. Multiple re-occurings.

You don't have people seeing, witnessing "ghosts" everywhere all day long. We refur to places people see these things as being "haunted". Now, suspended disbelief for just a sec, and assuming the basic thing as a "haunting" might simply be an imprint playing over and over, possibly from a trauma, why can't it happen to animals too? Thus we now get Animal Planets show. How about a simple step forward and prehistoric animals too? Lack of physical evidence, yet sighting after sighting, usually confined, again to a certain area, it would explain a lot, wouldn't it?

These shows have been on and on ALL MY LIFE. No concrete physical evidence EVER. Yet more and more eyewitnesses, and people looking, than ever! Stop looking for physical evidence for awhile and simply bring in REAL SCIENTISTS to gather indisputable proof of what they claim to get all the time! EVP's, Heat signatures, and video. Not plumbers, actresses,some drama major from pennsylvania, and forest guys with the exact same thing(nothing valid)over and over and sterioded syblings. Scientists! The first real step would be actually validating what you claim to ALREADY HAVE.