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Originally Posted by ImOpen  After a ocuple of hundred years, still noone can show that these pheomena exist. "Paranomal experiences" are often due to placebo effects, demand charachteristics, experimenter expectancy effects etc. Look up these key terms and you will begin to see how easy it is to delude others or yourself.
When it comes to mediums etc. a hypothesis could be that these persons are suffering from a mild form of psychosis.  |
A couple hundred years ago, hypnosis was considered black magic, and the now widely accepted concept of the sub-conscious didn't even exist.
Because we don't posess the tools to measure such phenomena, does not mean they don't exist.