Star Wars Exhibit and Author/Audience connection

Wyrdsmiths: Star Wars Exhibit
On the Wyrdsmiths blog, Kelly McCullough talks about the Star Wars exhibit and how what a writer does is affected by its audience.
The take home ending paragraph really brings this home:
Perhaps that’s all generalizable to something like the writer has to understand that the audience is part of the story and that’s true from the moment you start writing something you intend to share.