That is the mega-theory of the whole series. Its very veiled though, at least if you're reading the first time and you don't have any idea about it. I didn't catch it, although I heard about it later and thought it made sense.
I wasn't going to say anything about it. I'm not sure if its a spoiler though since its just a theory.
To be fair though Martin probably hasn't told Bean one way or the other.
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