Algorithmic co-arguers: AI-mediated argumentation and structural epistemic injustice
摘要
Artificial intelligence systems shape how people argue and exchange reasons in digital and institutional contexts. This paper argues that AI systems act as co-arguers, influencing who is visible, credible, and heard in public reasoning. Drawing on argumentation theory and the framework of epistemic injustice, the study analyzes how algorithmic ranking, moderation, and summarization reshape the structure of argumentation. The analysis covers three domains social media, legal decision support, and educational feedback systems using qualitative case studies based on prior empirical research. The results show that algorithmic processes reinforce testimonial and hermeneutical exclusions by amplifying dominant viewpoints and limiting argumentative diversity. The paper proposes design and policy interventions, including participatory audits and diversity metrics, to reduce structural epistemic injustice. This approach reframes AI not as a neutral medium but as an active participant in shaping collective reasoning.