20. John Donohue: “I'm Frequently Called a Treasonous Enemy of the Constitution.”

John Donahue, a Stanford law and economics professor, reveals how his decades-long academic battle over gun policy has reshaped the evidence on concealed carry laws—proving they increase violent crime, not reduce it. His critique of John Lott’s influential 'More Guns, Less Crime' thesis exposed flawed data controls, particularly the unaccounted impact of the crack cocaine epidemic, which created a false correlation. Despite overwhelming evidence, Donahue laments that the academic community largely ignored his follow-up work, even after he made 20-year crime predictions that were perfectly validated by real-world data. The episode also explores his equally contentious research on the death penalty, which he argues has no deterrent effect and is driven more by political signaling than crime reduction. Yet the most profound lesson from Donahue’s career isn’t about guns or crime—it’s that in social science, truth doesn’t triumph through debate or evidence; it’s often buried by indifference. When his abortion-and-crime hypothesis was first published, it ignited global controversy, but years later, after every prediction came true, the academic world simply stopped paying attention. As Donahue puts it: 'The absolute worst is to be ignored.' The episode underscores a deep crisis in social science: when rigorous research is met not with rebuttal or acceptance, but silence, the pursuit of truth collapses.