In Reliable Reasoning, Gilbert Harman and Sanjeev Kulkarni-a philosopher and an engineer-argue that philosophy and cognitive science can benefit from statistical learning theory (SLT), the theory that lies behind recent advances in machine learning. The philosophical problem of induction, for example, is in part about the reliability of inductive reasoning, where the reliability of a method is measured by its statistically expected percentage of errors-a central topic in SLT.