I’m all for Occam’s Razor and all. Let it be said: Most reported incidents of the “supernatural” have perfectly “natural” explanations. There are also plenty of deliberately concocted hoaxes.
Nevertheless, the cult of scientism is fundamentalist in its view that “everything can be explained by science”. The notion that mold can explain away paranormal activity might be an example of science fundamentalists throwing a Hail Mary pass—pun fully intended.
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Horror fiction worth reading:
The haunted road of Eleven Miles of Night
The haunted 1980s: 12 Hours of Halloween
Read the opening chapters of both books on this site.