Steve Oswald is Senior Lecturer in English Linguistics at the University of Fribourg Switzerland. His theoretical, empirical, and experimental research navigates the interface between cognitive pragmatics and argumentation theory and tackles classical issues related to the use of persuasive and deceptive language. He has co-edited 8 collective volumes devoted to issues in argumentation theory, pragmatics, and rhetoric and published his research in numerous academic journals and collective volumes. He serves as vice-chair of COST Action CA17132 and currently leads 2 research projects on implicit meaning in argumentation and on rephrase strategies in argumentation. More information can be found on his website: www.steveoswald.ch.   Marcin Lewiński is an Assistant Professor and the Chair of the Reasoning and Argumentation Lab (ArgLab) at the Nova Institute of Philosophy, Nova University of Lisbon, Portugal. He completed his PhD at the University of Amsterdam (2010), and from 2010 to 2016 worked as a post-doctoral fellow of the Portuguese Foundation for Science and Technology (FCT), before becoming an assistant professor in 2016. His work focuses on the basic issues in the philosophy of language and argumentation theory such as rationality of everyday conversations, practical reasoning, pragmatic meaning, social and strategic aspects of speech acts, fallacies. He is currently leading the Horizon 2020 COST Action project CA17132, European Network for Argumentation and Public Policy Analysis (2018-2023), where philosophical and linguistic concepts and methods are applied to a critical study of public argument. Sara Greco (PhD in communication sciences, 2009) is Associate Professor of argumentation at USI – Università della Svizzera italiana in Lugano (Switzerland) at the Institute of Argumentation, Linguistics and Semiotics. She has published widely on argumentation theory, using linguistic and discourse analytical instruments to study spoken and written argumentative discourse. Her research concentrates on argumentation as an alternative to conflict (see the monograph Argumentation in dispute mediation: A reasonable way to handle conflict, John Benjamins 2011) and on the formal and informal design of dialogue spaces in different communication contexts. She also works on the analysis of public controversies, with a focus on the debate surrounding sustainability of the fashion industry. Greco is a member of the Steering Board of the European Conference on Argumentation. Since 2018, she is leader of the empirical working group in the Cost Action APPLY “European network of argumentation and public policy analysis”  Serena Villata is a tenured research fellow (CR1) in computer science at the CNRS and she pursues her research at the I3S laboratory. Her research area is Artificial Intelligence (AI), and her current work focuses on artificial argumentation, with a specific focus on legal and medical texts, political debates and social network harmful content (abusive language, disinformation). Her work conjugates argument-based reasoning frameworks with natural language arguments extracted from text. She is the author of more than 150 scientific publications in AI. Since July 2019, she has been awarded with a Chair in Artificial Intelligence at the Interdisciplinary Institute for Artificial Intelligence 3IA Cote d’Azur on “Artificial Argumentation for Humans”. She became the Deputy Scientific Director of the 3IA Côte d'Azur Institute in January 2021. Since December 2019, she is a member of the National Pilot Committee for Digital Ethics (CNPEN).