The Internet today is, after all, a machine for reinforcing our prejudices. The wider the selection of information, the more finicky we can be about choosing just what we like and ignoring the rest. On the Net we have the satisfaction of reading only opinions we already agree with, only facts (or alleged facts) we already know. You might read ten stories about ten different topics in a traditional newspaper; on the net, many people spend that same amount of time reading ten stories about the same topic. But again, once we understand the inherent bias in an instrument, we can correct it. One of the hardest, most fascinating problems of this cyber-century is how to add "drift" to the net, so that your view sometimes wanders (as your mind wanders when you're tired) into places you hadn't planned to go. Touching the machine brings the original topic back. We need help overcoming rationality sometimes, and allowing our thoughts to wander and metamorphose as they do in sleep.