Outside Back Cover 27.2 Printed in Canada by Preney Print & Litho Inc. on recycled paper. In Volume 27, Number 3 (2007) Forthcoming Advances in the Theory of Argument Schemes and Critical Questions Henrike Jansen Reductio ad Absurdum vs. Argument from Consequences Douglas Walton & David Godden Christian Kock Dialectical Obligations in Political Debate