Originally Posted by Norek
Yeah I know, but how exactly does it do it? Is there any nanotech included? How exactly does it change the body? I dunno, for a movie that relies on straight-forward exposition most of the time, they didn't really explain that very well.
Same goes for Killian. I was a bit confused about his motivations and his plan. I didn't fully understand what he was trying to do ultimately.
Revenge on Stark, but also controlling a "war" between America and the Ten Rings by having both the President (who would rely on Killian's Extremis soldiers to beef up the U.S. Armed Forces) and the Ten Rings in his backpocket.