Why Argumentation Theory? Realizing the Practical Objectives of Argumentation Theory as the Study of Effectiveness Through Reasonableness

The central question of this contribution is: Why argumentation theory? Its points of departure are: (1) argumentative discourse is aimed at resolving a difference of opinion based on the merits of the argumentative moves that are made (“effectiveness through reasonableness”); (2) argumentation theory concentrates on the problems involved in the production, analysis and evaluation of argumentative discourse. The comprehensive research program that needs to be carried out to tackle these problems includes philosophical, theoretical, empirical, analytical, and practical research. It is illuminating to see to what extent these five components are given their due in the versions of the research program of the currently most prominent approaches: (1) the formal logical, (2) rhetorical/pragmalinguistic, (3) informal logical, and (4) pragmadialectical paradigm. Based on the research results, the discipline should serve several practical objectives: (1) providing a profound understanding of the concept of argumentation and a sound body of knowledge about the ways in which argumentation manifests itself; (2) assisting people in getting a better grip on the argumentative discourses they encounter in public life; (3) supplying tools for improving the quality of argumentative practices. The different versions of the research program implemented in the four approaches are not equally strongly designed to serve these practical objectives. Three basic problems complicate the treatment of argumentative discourse: (1) the natural communication predicament; (2) the varying institutional constraints on argumentative discourse in different macro-contexts; (3) the higher order conditions for resolving a difference that are prerequisites for reasonable argumentative discourse.