Bit of Kant, bit of Kierkegaard, bit of motorcycle maintenance. That’s one take on The World Beyond Your Head, Matthew Crawford’s philosophical polemic about how virtual reality is impinging on real reality. Actually, his targets in this book are Descartes and John Locke, with whom, he reckons, the rot started when it comes to thinking about the human person as a cerebral calculating machine, divorced from his own body and from the world around him.