Lyric discussion by Seifyr 

I think xvelvetxkissesx is on the right path, although not sure if I agree with the whole control part at the end.

As for why it's called Superunknown I would guess its talking about the universe and life in general. It's all unknown and alot of it does not make anysense and as xvelvetxkissesx said there are many sides/perspectives to everything.

First it steals your mind - nothing makes sense Then it steals your soul - then you die

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