Professor Roger Kneebone directs the Imperial College Centre for Engagement and Simulation Science and the Royal College of Music – Imperial College Centre for Performance Science. His first career was as a surgeon, operating on trauma patients in southern Africa. He then changed direction, becoming a general practitioner in southwest England. Now, as an academic at Imperial College London, he researches what experts from different fields can learn from one another. His unorthodox and creative team includes clinicians, computer scientists, musicians, magicians, potters, puppeteers, tailors and fighter pilots. He hosts the Countercurrent Podcast and his book Expert: Understanding the Path to Mastery was published in 2020 (Penguin Viking).