Teresa Marques is Profesora Agregada (Associate Professor) in the Philosophy Department at the University of Barcelona, Spain. She is also a member of the LOGOS Group and of the Barcelona Institute of Analytic Philosophy. With Åsa Wikforss she is editor of Shifting Concepts: The Philosophy and Psychology of Conceptual Variability (2020). She has published in journals like Philosophical Studies, The Australasian Journal of Philosophy, Synthese, Erkenntnis, Inquiry, Thought, Ratio, Philosophia and Metaphilosophy.

Chiara Valentini is Senior Researcher in Philosophy of Law at the University of Bologna Law Department, Italy. With Bongiovanni, Postema, Rotolo, Sartor and Walton, she is editor of the Handbook of Legal Reasoning and Argumentation (2018). Her work has been published in journals like Law and Philosophy, The American Journal of Jurisprudence, Ratio Juris and Jurisprudence.