@Cinemahead we map scripts because it makes the process of writing less painful and more fun. A story map makes the making-of a script faster, visual, imaginative. Plus, it makes it easy to collaborate.
I ran into this YouTube interview with Alfonso Cuaron, director of “Y Tu Mama Tambien”. Listen to what he has to say about coming up with and directing “Gravity”. He says it was “a script that took three weeks to write”, a story rooted in personal adversities.