Brin has taken some of the concepts explored in his science fiction, fleshed them out and provided a compelling rationale and background for them. He gives a fair and balanced analysis of all sides of the multitude of debates regarding privacy, censorship, freedom, access to information and the future of our society. And then he steps back and has the courage to do what so few people seem to do in modern debate--argue that the answers lie not in the extremes, but in a pragmatic center. Perhaps "center" isn't the right word, instead he seems to have moved the entire argument from two dimensions into three.
If you have any interest at all in privacy (computer or otherwise), censorship, government power, encryption, or what our world may be like in ten or twenty years; you definitely need to read this book. You may not agree with it, but it's going to shape the coming debates.