If someone who has clearly just watched the shows discusses a theory they have, it's easy to dismiss. There isn't enough evidence to suggest that things couldn't work out exactly as they were told to you. But you come in with your knowledge from having read the book; now I can't as easily dismiss the theory as being just sort of possible, because you presumably have further evidence from having read books three through five.
Actually, as it happens, the theory I mentioned is almost entirely grounded in the first book. However, this does not matter, for the following reasons:
1. Even if I've read the books, it's still only a theory. A popular one to be sure, but a theory with absolutely no confirmation. Therefore, you already have completely leave to dismiss the theory because, if you haven't noticed yet, most fan theories tend to be wrong.
2. The show and books are different entities and so it's entirely possible that the theory could prove true in one and not the other, especially as the two have steadily diverged over time.
3. I consider the theory to be entirely supportable using just evidence from the show and have only cited show evidence as a result. For those of you who have read the books and know what this is all about, keep in mind I didn't say anything about a broader theory this all ties into, merely one subset of it: the only subset with significant support in the show.
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SubDeity wants to vote for Calvin Coolidge. [Evil Republican]
Play Der Langrisser.