(trying) to get back to the original post
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IMO any conversation to do with afterlife causes controversy, with those who believe there must be 'something more than all this'...those who believe they have proof of something more than all this, and those who believe that when we die - that's it.
Someone who witnesses something 'unexplainable' may seek to find a logical/scientific explanation for the occurrence, and if there is one (which there mostly is) will rest assured. However, this isn't always the case, and for many folk things happen for which, after extensive scientific research, no reasonable explanation can be found. Luckily the majority of us go through life with no spooky incidences at all (well...not that we know of
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To me there seems to be two areas of exploration. Firstly knowledge gained by the use of ouija boards, seances, etc, and secondly physical spirit/haunting/ghost experiences that can happen whether you believe 'in all that stuff', or not. I believe the difference between these two areas is firstly the use of paraphernalia has come about through our natural curiosity to gain knowledge of everything that goes on around us - with a need to have proof, whereas the other spiritual/haunting area is beyond our knowledge, and quite often cannot, by means of logic, or science, be explained, which is extremely threatening to us.
Right....fire away.