Not only these were new kinds of stories, they were being told with a new kind of formal structure. [...] The result was a storytelling architecture you could picture as a colonnade - each episode a brick with its own solid, satisfying shape, but also part of a season-long arc that, in turn, would stand linked to other seasons to form a coherent, freestanding work of art. [...] The new structure allowed huge creative freedom: to develop characters over long stretches of time, to tell stories over the course of fifty hours or more, the equivalent of countless movies.