What is the “safety in numbers” effect? And how can research conducted in simulated environments challenge the results of real-life studies about cyclists safety? The discussion in this podcast with Dr Jason Thompson, University of Melbourne, Australia, introduces the idea of modeling artificial societies, and suggests ways these agent-based models can be used to advance injury prevention. Read the related paper on the Injury Prevention website: https://injuryprevention.bmj.com/content/25/5/379