On 12 October, Prof. Vimal Ranchhod spoke with John Maytham on Cape Talk about this year’s Nobel Prize in Economics Laureates David Card, Joshua Angrist and Guido Imbens. Prof. Ranchhod discussed an example of some of their work in natural experiments, and how their work has played an important role in economic thinking. The discussion also touches on how their work has played a role in discussions on minimum wage legislation in South Africa. Listen to the interview.