I'm one of those guys that just needs to know how stuff works. I need, at a minimum at least, a high level theory for everything. It doesn't have to be a completely accurate theory, just something that allows me to stop thinking about how something works and move on. One topic that continues to puzzle me has been thinking itself, or more specifically how the brain works. Jeff Hawkin's new book "On Intelligence" has scratched that itch nicely. His name should sound familiar, founder of Palm Computing, inventor of the Palm Pilot, founder of Handspring... In his book he presents a new theory for how the brain works and what intelligence really means. He hopes that by understanding the human brain we will someday be able to build intelligent machines - A promise that so far traditional AI has failed to fulfill.