From his Q & A with Adam Pasick at New York magazine:
What's your biggest worry about the TV show as it gets deeper into the story?See George R.R. Martin's list of 5 novels that should have won the Hugo Award.
There are certainly challenges that lie ahead, and as the show goes on, the challenges will get greater. I wanted to write a book as big as my imagination. Now David [Benioff] and Dan [Weiss] are faced with the very real challenge of how do you translate this complex thing with a cast of thousands and giant castles and dragons and walls of ice — serious production challenges that get bigger with every book. I think one of biggest challenges is budgets and shooting time. We had ten hours for the first season, and the same for the second. Boardwalk Empire has twelve, Treme has twelve — if we'd had two more hours we could have told a lot more of the story. Storm of Swords [the third book] is enormous and it will have to be broken up into two seasons, I think. But David and Dan are great people and they've assembled a great team, so if anyone can do it, they will.
The other thing that concerns me is what I call the butterfly effect. If you're familiar with the Ray Bradbury short story, you'll know what I mean. On TV, we saw the death of Mago, but we will see him in the books — he's still alive. It will have to be different in the book than in the show, because they killed him on TV. These are the kind of ripple effects that can happen.
How do you keep all of these details straight? Is there a huge encyclopedia or computer file that you use when you write?
It's mostly...[read on]
--Marshal Zeringue