From one of our leading thinkers, a dazzling philosophical journey through virtual worlds

In the coming decades, the technology that enables virtual and augmented reality will improve beyond recognition. Within a century, world-renowned philosopher David J. Chalmers predicts, we will have virtual worlds that are impossible to distinguish from non-virtual worlds. But is virtual reality just escapism? In a highly original work of ''technophilosophy'', Chalmers argues categorically, no: virtual reality is genuine reality. Virtual worlds are not second-class worlds. We can live a meaningful life in virtual reality - and increasingly, we will.

What is reality, anyway? How can we lead a good life? Is there a god? How do we know there''s an external world - and how do we know we''re not living in a computer simulation? In Reality+, Chalmers conducts a grand tour of philosophy, using cutting-edge technology to provide invigorating new answers to age-old questions.

Drawing on examples from pop culture, literature and film that help bring philosophical issues to life, Reality+ is a mind-bending journey through virtual worlds, illuminating the nature of reality and our place within it.