Bob the Skutter wrote:
Who says Mal was right? Cobb wasn't wearing his wedding ring, the top looked as it if was about to fall, and if you listen during the credits you hear it fall.
I don't think it really matters. In my opinion, the ending is less about the trivial matter of whether the whole film is a dream or not and more about what we the audience think about redemption and what people have to do to deserve it.