m Design for Abstract Argumentation Iyad Rahwan 1 (Fellow) School of Informatics, University of Edinburgh, Edinburgh EH8 9LE, UK 2 Faculty of Informatics, British University in Dubai, P.O.Box 502216, Dubai, UAE Kate Larson Cheriton School of Computer Science University of Waterloo 200 University Avenue West, Waterloo ON, N2L 3G1, Canada