Caesar asks the questions of Proochista and they discuss the importance of, and limitations to, using evidence in global health decision making and the need to be aware of all the factors that influence global health, not just data. Professor Proochista Ariana is the Course Director for the MSc in International Health and Tropical Medicine, IHTM at the University of Oxford. Proochista holds a Master’s in International Health from Harvard University and a Doctorate in International Development from University of Oxford, as well as a Post Graduate Diploma in Learning and Teaching in Higher Education, also from Oxford. Her research empirically examines the relationship between processes of development and health in resource limited and transition contexts, appreciating the multidimensionality of both. Professor Caesar Atuire is a philosopher and health ethicist from Ghana. He is the Ethics Lead for the MSc in International Health and Tropical Medicine, IHTM at the University of Oxford. Caesar is also an Associate Professor of Applied Philosophy at the Department of Philosophy and Classics at the University of Ghana and an affiliate Instructor at the University of Washington’s Department of Bioethics and Humanities. Caesar’s interests and research in bioethics are conceptual and empirical. He is currently leading a team of highly qualified colleagues from across the globe on a Wellcome Discovery Award to explore conceptualizations of solidarity and to design a solidarity index for ranking global health funders.