“One correction to what I just said: Humanity still has secrets, in the inner world that each of us possesses. The sophons can understand human language, and they can read printed texts and information on every kind of computer storage media at ultrahigh speeds, but they can’t read human thoughts. So long as we do not communicate with the outside world, every individual keeps things secret forever from the sophons. This is the basis of the Wallfacer Project.
