It's a lot like religion, too. If you want to look for things about Buddhism or Hinduism or mysticism, you have to look under philospophy. And if you go to Half-Priced books, even the Mysticism is under it's own heading, like it doesn't qualify as a philosophy. Even though they found out that Carlos Casteneda was making up his stories about Don Juan, it can still be considered a philosophy! Only Judeo-Christian stuff in the religion section. Only 30% of the world in Christian, get off your high horse!
Paranoid computer geeks unite!
I have a solution. Buy your books at Amazon.com.
Then you don't have to get all worked up about how they are organized in the store.
BTW Al Frankin is most famous for his roles on SNL. He is a comedic actor.
Franken and Ivins should be listed under "fiction".