Over the past decade, email replaced the phone as the primary way business was done in Hollywood.
There's no doubt, reading the exchanges between Pascal and Rudin, that if they trusted their correspondent, they didn't worry about emails being forwarded, so people had the kind of casual conversations over email that they'd previously only have in person.
No longer. One source said that even in the past two weeks the emails flying around have "dried up." Now people are treating email more like a letter: A more formal, thought-out correspondence. And now people are writing not just for the audience of the people they're writing to, but with an awareness that the whole world might be able to read it.