You mean those fan-written stories featuring copyrighted characters having all sorts of non-canonical ailments, fetishes, backstories and relationships? The stories that usually have a thinly-disguised avatar of the writer rescuing all of the canonical characters and/or having sexual encounter with each one? Those stories that always seem to have some crossover character from My Little Pony or Twilight? The stories that are written by people who seem to lack a basic understanding of the use of proper grammar, punctuation, and spelling?
Those stories?
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.