This is one of the central paradoxes of our culture—everything is swallowed into oblivion but nothing goes away. On the screen, it’s no longer clear who is in charge of the words, or at what point they cross the line between being a fluid, rearrangeable thing in your mind and being a verifiable statement made in public, on the record, for which you may one day have to answer. Many people are worried, understandably, that everything we do—online and off—is retrievable by the government. But what about everything we think? How much space do we afford ourselves for private thought?
— Thomas Beller in The New Yorker