Thomas Icard is the C. I. Lewis Professor of Philosophy and Professor of Computer Science (by courtesy) at Stanford University, where he also directs the Suppes Center for Logic and Philosophy of Science. Previously he was the Herbert Simon Fellow in Scientific Philosophy at Carnegie Mellon and a Moore Distinguished Scholar at California Institute of Technology. His research lies at the intersection of cognitive science, philosophy, and computer science, especially on topics related to causality, language, reasoning, and decision making. A driving theme for much of this work is the productive tension between normative and descriptive perspectives on natural and artificial intelligence.