I do find it hilarious that the "I Don't Read" landed higher than all the erotica, Fahrenheit 451 and 'The Holy Bible'. It appears the books that don't work on more than one level are least useful to your intelligence (assuming SAT is relevant to intelligence).

I do find it highly interesting that many of the books with a wide score-range are books known to work on multiple levels; Dune, Shakespeare, Alice in Wonderland, Lolita, Catch 22, etc.