Podcast with Robert Axelrod on game theory and prisoner's dilemma

What do cancer cells, cyber warfare, and the prisoner's dilemma have in common? They all reveal how collaboration really works , and why it breaks down. Listen to political scientist Robert Axelrod explain the hidden architecture of cooperation, from tumor biology to international security. Subscribe and follow for more from this series on real-world collaboration. Robert Axelrod, one of the most influential thinkers on cooperation and game theory, joins Paul Verschure, Jenna Bednar, and Andreas Roepstorff for a wide-ranging conversation that moves from evolutionary biology to geopolitics with remarkable coherence. Axelrod draws on decades of interdisciplinary work to unpack what collaboration actually requires , and where our instincts betray us. The conversation opens with a deceptively simple distinction: cooperation is broad, but collaboration demands specialization, a common product, and mutual dependence. Axelrod illustrates this through his own research on cancer, where genetically distinct cell lines cooperate within a tumor , one disabling the immune system, another promoting blood supply , without any rational intent. This biological collaboration mirrors human teamwork in structure, even without consciousness or goals. From there, the discussion moves into game theory territory. Axelrod explains how the prisoner's dilemma operates inside collaborations: each participant is tempted to shirk, but mutual effort produces the best outcome. The key insight is that collaboration does not require shared goals, complete information, or even rationality , it requires an appreciation that your choices affect the other side and theirs affect you. The most striking segment addresses the psychology of vengeance and its role in derailing cooperation at scale. Using Pearl Harbor and 9/11 as case studies, Axelrod shows how emotional responses can override rational calculation at both individual and national levels , and why understanding this dynamic is critical for avoiding escalation in domains like cyber conflict. Trust emerges as the essential infrastructure. Axelrod introduces his concept of "the shadow of the future": collaboration sustains itself when both parties believe the relationship will continue and the future is worth investing in. Without that temporal horizon, trust collapses and so does cooperation. On the architecture of collaboration, Axelrod identifies key variables: whether goals are externally imposed or internally negotiated, the degree of specialization between participants, and the communication structures that allow mutual understanding across disciplinary boundaries. His collaboration with evolutionary biologist William Hamilton exemplifies this , one knew about beetles, the other about war, and neither could have produced the work alone. The conversation closes with Axelrod's surprising answer to what he would change about humans to improve collaboration: nothing. The side effects of any modification are too unpredictable. Instead, he points to sustainable collaboration already functioning at global scale, the U.S. dollar as a universal medium of exchange, while acknowledging that climate change represents the hardest test of cooperative capacity humanity has ever faced. Part of the Ernst Strüngmann Forum series on Collaboration, produced with the Convergent Science Network.