McMahan has written extensively on normative and applied ethics, especially on bioethics and just war theory. His publications in bioethics include The Ethics of Killing: Problems at the Margins of Life.[5] The book consists of five parts: about identity, death, killing, the beginning of life, and the end of life. In its first part, McMahan defends a mixed view of personal identity, claiming that individuals are what he calls "embodied minds". In the following parts, he claims that the badness of death and the wrongness of killing depends on our interest in living. He also defends what he calls a "time-relative interest account of living". According to his view, our interest in living depends on our psychological connection to our future selves at each time.[6]
In relation to his contributions in bioethics, McMahan has also written on the subject of animal ethics, where he has argued against the moral relevance of species membership.[7][8] McMahan has also claimed that intensive animal farming is a major ethical problem. He has argued for a strong negative duty to stop the suffering inflicted on animals through modern industrial agriculture and against the eating of animals.[9] He has also participated in the ethical debate on wild animal suffering.[10] He has additionally made a case for intervening in nature to alleviate the suffering of wild animals when doing so would not cause more harm than good.[11][12][13]
Just war theory
McMahan's main contributions to just war theory are made in his book Killing in War,[14] which argues against foundational elements of the traditional basis of just war theory. Against Michael Walzer,[15] he claims that those who fight an unjust war can never meet the requirements of jus in bello.
Other work
McMahan has also co-edited the book The Morality of Nationalism with Robert McKim in 1997,[16] and Ethics and Humanity.[17] In the early 1980s, he wrote two books about the political situation at the time: British Nuclear Weapons: For and Against[18] and Reagan and the World: Imperial Policy in the New Cold War.[19] He also wrote the op-ed "The Meat Eaters", published in The New York Times.[11] In more recent times, he has done work on effective altruism.[20][21] He is on the editorial board of The Journal of Controversial Ideas.[22]
Selected publications
Articles
McMahan, Jeff (2009). "Intention, permissibility, terrorism, and war". Philosophical Perspectives 23 (1):345-372.
"The Meat Eaters". The Stone. The New York Times. September 19, 2010.