floor map- They broke the book down into hundreds of scenes, copied them onto colored index cards, and spread the cards on the floor, with each color representing a different character or time period. The house looked like “a Zen garden of index cards,” Lana said. At the end of the day, they’d pick up the cards in an order that they hoped would work as the arc of the film. Reading from the cards, Lana would then narrate the rearranged story. The next day, they’d do it again.