We may have thousands of friends on social media, but how many are really looking out for our best interests? David Napier is professor of medical anthropology at University College London, director of the university’s Centre for Applied Global Citizenship, and director of its Science, Medicine, and Society Network. He joins host Krys Boyd to discuss group dynamics and why public policy that values the collective good over individual interests is ultimately beneficial to everyone. His article “Safety is Fatal” was published in Aeon.