It is my own interpretation, but, I am 99% sure it is what the Coen Brothers intended. I could eloborate and clarify but it would take an entire essay and I am at work. I welcome other interpretations.There is no question in my mind even if I am in error in interpreting the film that the Coen Brothers layered symbolism in every last scene of the film to make a more than meets the eye statement. Amazing film.