Philip K. Dick wrote this letter after seeing his first glimpse of Blade Runner in a television segment. To the best of the family's knowledge, this letter has never been previously released to the public.
Everyone sees them, but no one does anything about them. They are the silent menace, stalking after the unwary fantasy writer like wolves after a lamb.
Tolkein is not to blame for the way that people have taken his books as the model for fantasy. His own writing on the subject of fantasy recommends "mining the past" for useful story-writing tools, not taking the pattern that someone offers you unaltered.
Most of the time, those imitations are themselves imperfect, ignoring a lot of what went on in the beginning story...