[SPOILER] Plot Discussion Thread *Spoiler Alert*

[Alardem]

I agree with the one before who said that Oswald was the one in the Iron Lung. However, I don't think the Iron Lung is life support. When you look inside, you can see his is networked into the Machine through his eyes, allowing him to control it and see through it. There is also a tube attached to his genitals to remove wastes, as well as multiple tubes in his mouth, which could be multi-purposed for communication, air supply, and nutrition. In addition, the body is partially submerged in Compound X, which could act as an extra method of controlling the Machine. I think he plugged himself into the Machine after sacrificing his kids, as his only purpose in life after that was the Machine.

...that explains The Chinese Room's 7 tweets on the components of the Machine!