JRM wrote:Not sure if this has been mentioned, and I didn't know where else to share this, but for the first few times I watched the film I completely overlooked what the kids were saying to Cobb in the end because I was too entranced with the damn spinning top. Now that I own the DVD/Blu-Ray however, I was able to rewind what they were saying, and what James said gave me a sense of Deja Vu. He said something along the lines of, "guess what I've been building?" To which Cobb responds, "what?" James says, "A house on a cliff!" Very soon after, the film ends. This reminded me of the first scene in the film. The building on the cliff where Cobb presumably finds Saito. It could just be a coincidence, but I just thought I'd share. Another nod to 'it's a dream?'
Nolan has already said in an interview that this was just the kid improvising and they shot the scene several times with him saying different things. Since there was an architecture theme throughout the film, he thought the "I've been building a house on a cliff", seemed most appropriate.