Horror or General Fiction?

When I was a grad student at Cornell, a short-lived coffee + book place in Ithaca put one of John Hubbard's textbooks in a section called "General Fiction". But maybe the Horror section would have been better?

Actually, I thought (and still think) that the book in question has some good stuff in it, but I am amused on general principles --- and the fact that it was one of Hubbard's books added to my amusement at the time.

(Tip of the cap to Carlos Castillo Chávez.)