Joe B. Bak-Coleman is an associate research scholar at the Craig Newmark Center for Journalism Ethics and Security at Columbia University and a computational social scientist. He earned his Ph.D. in ecology and evolutionary biology at Princeton University in 2020, working with Iain Couzin and Dan Rubenstein, and recently completed a postdoctoral fellowship at the University of Washington Center for an Informed Public. His research focuses on understanding how collectives make decisions in the face of uncertainty. He’s particularly interested in understanding what makes collective decision-making work and how it can go awry. Over the past decade, he has worked on collective decision-making in a range of contexts from animal groups and social media to metascience.