One of the things I love about this series is that even though there are thousands of pages, every single word in the book seems to be extremely deliberate. Every thought is relevant in not only describing the world the story takes place in but also in relating to some part of the action of the story itself. SO I don't think that pointing out Aerys' attraction to Joanna is there just as an added little incentive for Tywin to be ambiguous in his loyalty to Aerys. He already had plenty of political and personal reasons for acting as he did in ending Robert's Rebellion. I think that there was some hanky panky there....
Whether or not Tywin is aware of what happened is almost a more interesting question than who Tyrion's biological father was. There are a few possibilities:
It is true. Tywin knows or at leasts suspects. Explains his hatred for Tyrion, refusal to name him heir to Casterly Rock, etc. very straightforwardly.
It is true. Tywin is unaware. A more interesting choice. Really drives home his bias against physical deformity.
It is not true. BUT Tywin assumes it is true. I think this would be cool way to go with the story but it doesn't really add much in terms of plot contrivances, the whole point of this I think is that Tyrion ends up with Dragon Blood.
and then it could just not be true in which case Aerys always just had a creepy infatuation with Joanna and Tywin was helpless to act on it against his liege lord causing the wound to fester until Tywin's rage is unleashed at the sack of KL
Another reason I think it's true is that I just started rereading book 1 and the first real physical description we get of Tyrion comes from Jon's first chapter and after pointing out that hes short and ugly compared to Cersei and Jamie it ends like this:
One green eye and one black one peered out from under a lank fall of hair so blond it seemed white.
Blonde hair is consistent through the Lannister line but that platinum blonde color only really happens in Lys and among the Targs. It seems unlikely that cousins Tywin and Joanna would both somehow be carriers of this gene.
Also don't we already know a certain character who's eyes appear black at first but on closer inspection are really a deep dark purple.......?
also Tyrion had a Morbid fascination with dragons
also didn't Aerys have another particularly bookish offspring....?
also Tyrion has TSI
Edited by Men in their cups say..., 18 October 2012 - 04:47 PM.