John Collier (1950-2018) was Professor Emeritus at the University of KwaZulu-Natal, South Africa. He received his PhD from The University of Western Ontario and taught or held research positions at Rice, Calgary, Newcastle, Melbourne, and the Konrad Lorenz Institute. His research interests were in the philosophy of science, biological and evolutionary theory, information theory, and complexly organized systems. He published widely in journals such as Biological Theory, Biosemiotics, Cognition, Communication and Co-operation, Biosystems, Theoria, The Australasian Journal of Philosophy, Revue Internationale de Philosophie, and Studies in the History and Philosophy of Science.

Michael Stingl received his PhD from Toronto and has taught at Rice, Calgary, and the University of Lethbridge where he is currently an associate professor of philosophy. He has sat on several provincial health ethics boards and was the coordinator of the editorial board of the Canadian Journal of Philosophy. His research interests are in the areas of evolutionary ethics and biomedical ethics. He has published articles in Biological Theory, Biology and Philosophy, The Canadian Journal of Philosophy, Ethical Theory and Moral Practice, and The Cambridge Quarterly of Healthcare Ethics. He is the editor of The Price of Compassion: Assisted Suicide and Euthanasia (2010).