Are you a student? said the professor. Yes, said Blurtso. What’s your major? I don’t have one, said Blurtso. Maybe you should take my class on Greek drama, said the professor. We’re going to stage “Oedipus Rex” in October, the quintessential story of blindness and self-discovery. Blindness and self-discovery, said Blurtso, isn’t that an oxymoron? Have you ever done any acting? said the professor. Yes, said Blurtso, I did some barnyard Shakespeare last year, but I ad libbed most of the dialogue. Well, said the professor, this will be a formal production, with a paying public, but the students in my class will be given walk-on roles. Hmm, said Blurtso, “Oedipus Rex.” Are there any elephants and ducks in the play?