Treo creator Jeff Hawkins urges us to take a new look at the brain -- to see it not as a fast processor, but as a memory system that stores and plays back experiences to help us predict, intelligently, what will happen next.

Philosopher Dan Dennett makes a compelling argument that not only don't we understand our own consciousness, but that half the time our brains are actively fooling us.

New York Times columnist David Pogue takes aim at technology’s worst interface-design offenders, and provides encouraging examples of products that get it right. To funny things up, he bursts into song.