IRON LUNG SPOILERS BELOW!!! Don't look if you haven't seen the movie.
I had an epiphany and I haven't seen anyone else talk about it so I'm putting it out there.
It's been about a week since I saw the movie, so I could be misremembering, but I conferred with a friend and they agreed (feel free to correct me if I'm wrong though!).
Throughout the whole movie, Simon wears the Eden religious symbol around his left hand/wrist. Then at the end of the film, when he's stuck to the sub and being consumed by the blood ocean, he rips himself down from the walls and in doing so loses his LEFT ARM.
That's such a fantastic bit of symbolism, especially when paired with the other prominent symbolism in that scene. As other people have pointed out, Simon's pose when being stuck to the sub resembles a crucifixion, which I absolutely love because it represents two juxtaposing ideas simultaneuosly.
The first idea is this: In Christianity, the crucifixion is the symbol for when Jesus died on the cross to save humanity from our sins. When Simon rips himself down from his crucifixion, he is rejecting that role of savior. He will not just give up his life, even to save humanity. He will keep fighting for his humanity and freedom until the very end.
And the second idea is this: The crucifixion is the blood ocean destroying the last shot humanity has at hope, which is represented by the Black Box, by preventing him from reaching it. Simon rips himself down from his crucifixion so he can find and protect the Black Box while the submarine leaks. He fights tooth and claw for the sake of saving humanity, of giving them hope and a future.
Simon is no savior, he does not want to be a savior, but he still does everything in his power to save humanity anyways.
And in making this choice, he loses his left arm, the arm that has carried the symbol of Eden the whole time. Eden, which has plagued him with guilt and grief throughout the whole movie. Eden, who seem to believe that there's nothing worth saving anymore, and so worship death. Simon tears himself down from his own crucixifion, choosing to not give up his life in sacrifice and to fight for the sake of humanity's future at the same time, and in doing so he severs his connection to Eden. He is no longer responsible for their sins, he is no longer controlled by their ideas.
He's the middle ground between Eden and the C.O.I.. This is bigger than him, and he will fight for that, but he's not their sacrificial savior, so he's gonna fight for himself the whole time as well.
I hope this makes sense. Good God, do I love this movie.







