The UBC Honorary Professor of Logic and Director of The Abductive Systems Group. Fellow of the Royal Society of Canada. Author of The Logic of Fiction (1974), Fallacies: Selected Papers 1972-1982 (with Douglas Walton in 1989). Author of Paradox and Paraconsistency (2003) and, with Dov Gabbay, of Agenda Relevance (2003) and The Reach of Abduction (2005). Author of the Death of Argument (2004), Aristotle’s Earlier Logic (2001), Errors of Reasoning: Naturalizing the Logic of Inference (2013) and Is Legal Reasoning Irrational? An Introduction to the Epistemology of Law (2015).