Juhani Yli-Vakkuri is Professor in Philosophy of Language at the University of Tartu and Alexander von Humboldt Research Fellow at the University of Bielefeld, having previously been Postdoctoral Research Fellow at the Centre for the Study of Mind in Nature (CSMN), University of Oslo. He is the author of several papers in the philosophy of language, the philosophy of mind, epistemology, and philosophical logic, as well as co-editor, with Mark McCullagh, of Williamson on Modality (Routledge, 2017).
John Hawthorne is Professor of Philosophy at the University of Southern California, and a Fellow of the British Academy. He was previously Waynflete Professor of Metaphysical Philosophy at the University of Oxford and Professor of Philosophy at Rutgers, the State University of New Jersey. His books include Knowledge and Lotteries (OUP 2004), Metaphysical Essays (OUP 2006), Relativism and Monadic Truth (OUP 2009, with Herman Cappelen), and The Reference Book (OUP 2012, with David Manley).