Abstract
How did your interest in physics develop? My father was an engineer so I grew up in a technical household, and physics was always what I was good at in school. I was also inspired by Richard Feynman's lectures and books. When I was 17, I moved from South Africa to Canada, and then to the University of Pennsylvania to study a dual degree in business and physics. It was an unusual combination, and I enjoyed the physics more. I'm not sure I would study business again if I could replay things.