Psychologist Kimberley Wilson and Dr Xand van Tulleken take a journey around the human body, to find out what it can tell us about our innate capacity for change. In episode one, Kimberley and Xand take a closer look at the peepers, the mince pies… the eyes! They discover why we don’t always see reality, experience the power of sensory illusions, and hear the amazing story of Jason Esterhuizen, whose sight has been partially restored with the help of a brain implant. Producer: Dan Hardoon Executive Producer: Kate Holland A Whistledown Production for BBC Radio 4