How does digital change books

“With the emergence and growing adoption of the Kindle and the iPad, publishers, writers, readers and software-makers have concerned themselves with shoehorning the old-media image of a book into new media. Everyone asks, ‘How do we change books to read them digitally?’ But the more interesting question is, ‘How does digital change books?’ And, similarly, ‘How does digital change the authorship process?’” — Craig Mod