'Douglas Walton has done it again. This important and timely book should be read by everyone concerned with the health and state of argumentation in a world that seems devoid of reasoning.' Ian I. Mitroff, Center for Catastrophic Risk Management, University of California, Berkeley
'Walton's book provides a much-needed firm grasp on two of the 'slipperiest member[s] of the family of legal terms' - burden of proof and presumption - through accessible examples and clear connections to the broader field of argumentation.' Joseph A. Laronge, Trial Attorney and Adjunct Law Professor
'Walton's intellectual tour de force brings together argumentation theory, AI and law to provide a framework within which this most difficult but also highly important issue of argumentation can be addressed.' Burkhard Schafer, University of Edinburgh