What is postmodern about Inception?

• Baudrillard's theory of hyper reality where there are dream worlds that look like reality within dreams.
• Disrupts linear structure - the beginning is the end and flips between layers of dreams
• Mixes up time and space reality - as time is different in the different layers of the dream
• Self-referencing - plot within plots and always referencing back to original "reality"
• Rejects Jameson's theory that Postmodernism is "depthless", characters are complex and develop throughout the film. The plot develops and raises the question what is reality? The ending adds to the philosophical questioning by not clearly establishing whether Cobb was dreaming about returning to his children or not, the top is left spinning on the table however screen goes to the credits so the audience don't see it fall. Postmodernism is usually against interpretation but the ending is enigmatic which leaves the audience questioning; the reality portrayed in the film with Cobb returning home, the reality portrayed in the film - is the director hinting to the audience that it is fictional, hyper real story, or whether life itself is "real" in the sense is life actually just a dream and we wake up when we die, like Mal believed. 
• Christopher Nolan (director) plays Inception on the audience through the soundtrack of Edith Piaf "Non, je ne regrette rien" being mutated, slowed down the deeper the characters are in the dream levels. The music feels distant in the 3rd level as if the audience are in the levels of dreams too - that the film is in fact a dream, playing on the fact that when the audience stop watching a film they almost feel disorientated having been drawn into the story and world that is portrayed in the film.
• It requires an engaged audience who are able to intellectually understand the plot. So in some ways it can be seen as elitist. However it has grossed $825 million which shows that it does appeal to a mass audience. It is able to mix mass culture of Blockbuster effects with a deep, complex plot.