I'm stunned by the previous review. I thought the CG animations at the end were exquisite. My favorite of the 9 by far (well, 'Beyond' was also beautiful). Sophisticated, breathtaking and very trippy. And all on top really deep concepts:
Scientist: "How do they know that the real world isn't just another simulation? How do you?"
Alexa: "I know I'm not dreaming now because I know what it's like being in a dream."
Scientist: "So dreaming lets you know that reality exists."
Alexa: "No - only that my mind exists. I'm not sure about anything else."