Five weaknesses of ASPIC +

Abstract

This paper analyzes the ASPIC+ argumentation system. It shows that it is grounded on two monotonic logics which are not Tarskian ones. Moreover, the system suffers from four main problems: i) it is built on a poor notion of contrariness, ii) it uses a very restricted notion of consistency, iii) it builds on some counter-intuitive assumptions, and iv) it may return undesirable results. © 2012 Springer-Verlag Berlin Heidelberg.