Manuel Gustavo Isaac is currently Postdoc.Mobility Fellow of the Swiss National Science Foundation at Arché Philosophical Research Centre (University of St Andrews). He received his PhD in 2015 from the University of Paris for a thesis in Historical epistemology. He has received several prestigious grants and fellowships for research projects on conceptual engineering. His work has been published in Synthese, Ratio, Inquiry, Erkenntnis, Philosophia, History and Philosophy of Logic, Logica Universalis, and several Springer book series among others. Dr. Isaac is the organizer of Arché’s seminar on conceptual engineering. Kevin Scharp is Reader in Philosophy in the Department of Philosophy at the University of St Andrews, the Director of Arché Philosophical Research Centre, and the leader of Arché’s Research Group on conceptual engineering. He received in PhD in 2005 from the University of Pittsburgh. He is the author of three books with Oxford University Press and the editor of a collection with Harvard University Press. He has published numerous influential articles in the most prestigious journals of the field and is a leading figure in conceptual engineering. Dr. Scharp is the co-organizer of Arché’s seminar on conceptual engineering.