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In a short video interview (see it after the post break) with Natalie Portman's film-focused social network MakingOf, Sorkin talks a little bit about how he got involved with the project. He also says he's close to completing a first draft of the script for the film, slated to go into production later this year.
Sorkin says of the film, "it's the fastest I've ever said yes to anything," signing on after getting to page 3 of the 14-page book proposal from Ben Mezrich that producer Scott Rudin had optioned for the film even before "The Accidental Billionaires" was completely written.