Duncan MacIntosh is a Professor of Philosophy and Department Chair at Dalhousie University. Professor MacIntosh works in metaethics, decision and action theory, metaphysics, philosophy of language, epistemology, and philosophy of science. He has written on desire-based theories of rationality, the relationship between rationality and time, the reducibility of morality to rationality, modeling morality and rationality with the tools of action and game theory, scientific realism, and a number of other topics.