This collection of essays is driven by the question of how we know what we know, and in particular how we can be certain about something even when we know it is an illusion. The contention of the book is that this age-old question has acquired a new urgency as certain trends in science, technology and ideas have taken the discussion of consciousness out of the philosophy department and deposited it in the world at large. As a consequence, a body of literature from many fields has produced its own sets of concerns and methods under the rubric of Consciousness Studies. Each contribution in this...