Key research themes
1. How can informal and defeasible reasoning frameworks improve the understanding and modeling of everyday and legal argumentation?
This research area investigates the role and legitimacy of non-deductive, non-monotonic reasoning patterns—such as defeasible, presumptive, and informal logic—in natural and legal reasoning contexts. It explores how these reasoning styles, often historically viewed as fallacious, are crucial for capturing the dynamics of everyday and juridical arguments, especially when strict deductive validity is either unattainable or impractical. This has particular relevance for enhancing educational strategies, legal theory, and computational models that accommodate the defeasibility and context-dependence of real-world argumentation.
2. What logical and notational frameworks best capture the structure and normative evaluation of informal and natural language arguments?
This line of research explores alternative logics—such as term logic, defeasible logics, pragmatic logics, and formal treatments of speech acts and assertions—and systematic classification procedures to represent the complexity and context-dependence of informal argumentation. It critically examines traditional symbolic and predicate logic representations, proposing frameworks that better integrate the pragmatic, dialectical, and normative dimensions of natural language arguments, thereby facilitating accurate analysis, evaluation, and computational processing.
3. How do differing conceptions of deep disagreement and argument conceptualizations influence argumentative theory and resolution strategies?
This theme focuses on clarifying the concept of 'deep disagreement' and related notions in argumentation theory by analyzing competing and coexisting characterizations. It also evaluates variations in the meaning of 'argument'—ranging from abstract propositional sequences to speech acts and social phenomena—and proposes pluralistic, epistemically oriented frameworks. Understanding these conceptual distinctions has implications for the normative evaluation of argumentation and the methodological treatment of irresolvable or persistent disagreements.