You may have been too busy weeping at the beauty of Gravity to have noticed all the analogies director crammed into the space-thriller. Just like Children of Men was rammed with religious allegory, Gravity pushed home some deeper meanings of rebirth and survival.
In an interview with io9, Cuarón laid out all his metaphors for anyone who didn't notice the first time, and to be honest, you probably should have. Check out what he had to say below, but beware major spoilers are present:
Space already lends itself to all these metaphorical possibilities. I think rebirth in many ways is part of the journey for everybody, not only every human in Earth, but it's also the journey of great characters. Great characters in literature or in cinema they go through the stages of rebirth and of a new understanding.
We have a character that is drifting metaphorical and literally, drifting towards the void. A victim of their own inertia. Getting farther and farther away from Earth where life and human connections are. And probably she was like that when she was on planet Earth, before leaving for the mission. It's a character who lives in her own bubble. And she has to shred that skin to start learning at the end. This is a character who we stick in the ground, again, and learns how to walk.
And what about that ending? Yep, chock full of metaphor too:
She's in these murky waters almost like an amniotic fluid or a primordial soup. In which you see amphibians swimming. She crawls out of the water, not unlike early creatures in evolution. And then she goes on all fours. And after going on all fours she's a bit curved until she is completely erect. It was the evolution of life in one, quick shot.
What do you think? Did you notice these when you saw Gravity? Let us know below.