Michael E. Bratman is U. G. and Abbie Birch Durfee Professor in the School of Humanities and Sciences, and Professor of Philosophy at Stanford University.  His main research interests are in the philosophy of action, where this includes issues about both individual and social agency and about practical rationality. His main book publications are Intention, Plans, and Practical Reason (1987); Faces of Intention: Selected Essays on Intention and Agency (1999); Structures of Agency:  Essays (2007); Shared Agency: A Planning Theory of Acting Together (2014); Planning, Time, and Self-Governance: Essays in Practical Rationality (2018); and most recently, Shared and Institutional Agency: Toward a Planning Theory of Human Practical Organization (2022).  

Katharine Jenkins is a Reader in Philosophy at the University of Glasgow. She previously worked at the University of Nottingham and at Jesus College, Cambridge, and she did her PhD at the University of Sheffield and her MPhil and BA at the University of Cambridge. Her research is primarily in social philosophy, especially the ontology of social categories such as gender and race. She is the author of, among other papers, ‘Amelioration and Inclusion: Gender Identity and the Concept of Woman’ (Ethics, 2016); ‘Toward an Account of Gender Identity’ (Ergo, 2018); and ‘Ontic Injustice’ (Journal of the American Philosophical Association, 2020). Her first monograph, Ontology and Oppression: Race, Gender, and Social Reality, is published in 2023 by Oxford University Press. It examines the nature of social categories that are bound up with oppression, such as race and gender, and the ways in which emancipatory social movements can best respond to such categories in view of the important role they play in many people’s identities.

Muhammad Ali Khalidi is Presidential Professor of Philosophy at the Graduate Center, City University of New York.  He specializes in general issues in the philosophy of science, as well as questions in the foundations of the special sciences. His book, Cognitive Ontology: Taxonomic Practices in the Mind-Brain Sciences, will be published in December 2022 by Cambridge University Press. Another book, Natural Categories and Human Kinds, appeared in 2013, and he is currently working on a short monograph titled, Natural Kinds, for the Cambridge Elements series.  He has also published papers in a number of philosophical journals, including Journal of Philosophy, Philosophy of Science, British Journal for Philosophy of Science, Philosophy and Phenomenological Research, Synthese, and Mind & Language.

Emma Tieffenbach is a researcher at the Università della Svizzera Italiana at Lugano and a temporary lecturer at the universities of Geneva, Lausanne, Fribourg, Neuchâtel and EPFL, where she teaches political and moral philosophy. The philosophy of economics is her domain of research where has published on invisible-hand explanations, the ontology of money, economic exchanges (what they are and whether they are ethically restricted), the legal foundation of gifting, the “warm glow” theory of gifting, nudges and public goods. She has co-edited with Julien Deonna a Petit Traité des Valeurs (Edition d’Ithaque, Paris, 2018) which brings together the contributions of 35 internationally renowned scholars. She is currently working on the philosophy of Austrian economics, with a special focus on the essentialism, apriorism and mentalism of Carl Menger. 

Vanessa Wills is a political philosopher, ethicist, educator, and activist based in Washington, DC. She is Assistant Professor of Philosophy at The George Washington University. Her areas of specialization are moral, social, and political philosophy, nineteenth century German philosophy (especially Karl Marx), and the philosophy of race. Her research is importantly informed by her study of Marx’s work, and focuses on the ways in which economic and social arrangements can inhibit or promote the realization of values such as freedom, equality, and human development. Her monograph, Marx's Ethical Vision, is forthcoming from Oxford University Press. Dr. Wills is on the editorial board of Spectre Journal, a biannual journal of Marxist theory, strategy, and analysis. In Spring 2022, she was Visiting Faculty Fellow at UMBC’s Dresher Center for the Humanities. In 2019/20, she was DAAD Visiting Chair in Ethics and Practice at Ludwig-Maximilian-Universität’s Munich Center for Ethics (now the Center for Ethics and Political Philosophy in Practice).She received her PhD in Philosophy from the University of Pittsburgh in 2011 and conducted part of her dissertation research at Humboldt-Universität zu Berlin as a Fulbright Scholar in the 2010-11 academic year. Dr. Wills received her Bachelor’s degree in Philosophy from Princeton University in 2002.