On the rationality of the iron rule from an evolutionary game perspective

In The Knowledge Machine, Michael Strevens challenges traditional views of the scientific method and defends the “iron rule of explanation.” This commentary introduces an evolutionary game perspective to explore the emergence and sustainability of the iron rule. Modeling the dynamics of theory-competing strategies in a population of theorists demonstrates that whether following the iron rule is rational depends on the frequency of iron-rule players one encounters. The study suggests that the social constraints of localized networks for iron-rule followers are critical factors in transitioning from a philosophical-dispute equilibrium to a scientific-dispute equilibrium.