Book excerpt: If the brain is the theatre, consciousness is the play. But who or what controls what we watch and how we watch it? In Theatre of the Mind Jay Ingram, whose past scientific investigations include the properties of honey on toast and the complexities of the barmaid's brain, tackles one of the most controversial of subjects: consciousness. Scientists have long tried to map our brains and understand how it is that we think and are self-aware, but what do we really know? Any discussion of the brain raises more questions than answers, and Ingram illuminates some of the most perplexing ones: What happens in our minds when we're driving and we suddenly realize that we don't remember the last few miles of highway? How do we remember images, sounds, and aromas from our past so vividly, and why do we often recreate them so differently in our dreams? Ingram's latest book is a mind-bending experience, a cerebral, stylish ride through the history, philosophy, and science of the brain and the search for the discovery of the self.