Why won't Pythagoras let you eat beans?

"According to Aristotle in his On Pythagoras, Pythagoras advised people not to eat beans, either because they are shaped like testicles or because they are like the gates of Hadders ... they are unrelated, or because they are harmful, or because they are shaped like the universe, or because they belong to oligarchy, because people use them to draw lots for elections." -Diogenēs Laertius's "Notes on the Words and Actions of Famous Philosophers"