If the pandemic has taught us anything, it's that epidemiology is incredibly complex: the millions of edge cases, what-ifs, and counterfactuals make modelling exceptionally difficult. One way of tackling this complexity is through agent-based modelling. In this episode, Rebecca Parsons and Premanand Chandrasekaran are joined by Thoughtworks colleague Jayanta Kshirsagar and Gautam Menom, professor of physics and biology at Ashoka University. They discuss how Thoughtworks has been helping researchers in India using agent-based modelling with two custom-built tools: EpiRust and BharatSim.