Witnesses Dr Aksel Sterri (Hosted Researcher at Oxford Uehiro Centre for Practical Ethics, University of Oxford), Dr Rebecca Brown (Senior Research Fellow at Oxford Uehiro Centre for Practical Ethics, University of Oxford), Brian Earp (Research Fellow at Oxford Uehiro Centre for Practical Ethics, University of Oxford), and Professor Julian Savulescu (Uehiro Chair in Practical Ethics; Director, Oxford Uehiro Centre for Practical Ethics; Co-Director, Wellcome Centre for Ethics and Humanities University of Oxford at Oxford Uehiro Centre for Practical Ethics, University of Oxford)