Forget what constitutes a 'book'. What will be the new 'bookshelf'?
What concerns me about the literary apocalypse that everybody now expects — the at least partial elimination of paper books in favor of digital alternatives — is not chiefly the books themselves, but the bookshelf. My fear is for the eclectic, personal collections that we bookish people assemble over the course of our lives, as well as for their grander, public step-siblings. I fear for our memory theaters.