Walter Sinnott-Armstrong

Walter Sinnott-Armstrong
Born1955 (age 69–70)
OccupationPhilosopher
Education
Alma materYale University
Doctoral advisorRuth Barcan Marcus
Robert Fogelin
Philosophical work
InstitutionsDuke University
Main interestsmoral psychology
epistemology
philosophy of religion
Notable worksMoral Skepticisms (2006)
Morality Without God? (2009

Walter Sinnott-Armstrong (born 1955) is an American philosopher specializing in ethics, epistemology, neuroethics, the philosophy of law, and the psychology and artificial intelligence.[1]

He is the Chauncey Stillman Professor of Practical Ethics at Duke University, where he holds appointments in the Department of Philosophy and the Kenan Institute for Ethics. [2]He also has secondary roles in Duke’s Law School and the Department of Psychology and Neuroscience, and is affiliated with the Duke Institute for Brain Sciences, as well as the Centers for Cognitive Neuroscience and Interdisciplinary Decision Sciences.[3]

Education and career

He earned his Ph.D. from Yale University in 1982 under the supervision of Robert Fogelin and Ruth Barcan Marcus, and taught for many years at Dartmouth College, before moving to Duke in 2010.[4]

Sinnott-Armstrong is the Chauncey Stillman Professor of Practical Ethics at Duke University, holding appointments in both the Department of Philosophy and the Kenan Institute for Ethics.[4] He is a core faculty member at several interdisciplinary research centers at Duke, including the Duke Institute for Brain Sciences, the Center for Cognitive Neuroscience, and the Center for Interdisciplinary Decision Sciences. He also serves as Resource Faculty in the Department of Philosophy at the University of North Carolina at Chapel Hill.[5]

Beyond Duke, Sinnott-Armstrong serves as a Partner Investigator at the Oxford Uehiro Centre for Neuroethics and as a Research Scientist at the Mind Research Network in New Mexico.[6] He has held leadership roles in the field, including as co-chair of the Board of Officers of the American Philosophical Association and co-director of the MacArthur Law and Neuroscience Project.[7]

Sinnott-Armstrong also co-directs the Summer Seminars in Neuroscience and Philosophy and co-teaches the online course Think Again, a widely enrolled MOOC with over one million registered students.[5]

Philosophical work

His Moral Skepticisms (2006) defends the view that we do not have fully adequate responses to the moral skeptic.[8] It also defends a coherentist moral epistemology, which he has defended for decades.[9] In 1999, he debated William Lane Craig in a debate titled "God? A Debate Between A Christian and An Atheist".[10]His Morality Without God? (2009) endorses the moral philosophy of his former colleague Bernard Gert as an alternative to religious views of morality.[11] Sinnott-Armstrong argues that God is not only not essential to morality, but moral behaviour should be independent of religion. He strongly disagrees with several core ideas: that atheists are immoral people; that any society will become like Lord of the Flies if it becomes too secular; that without morality being laid out in front of us, like a commandment, we have no reason to be moral; that absolute moral standards require the existence of a God.[12]

Sinnott-Armstrong is a proponent of Contrastivism, the idea that all claims of reasons are relative to contrast classes.[13] Sinnott-Armstrong is known for advancing sevehe Center for Interdisciplinary Decision Scienceshe Center for Interdisciplinary Decision Sciencesral notable philosophical positions, including non-demanding consequentialism, Pyrrhonian skepticism, contrastivism, and more recently, semi-compatibilism.[14] [15]

He is known as an advocate for philosophy’s public relevance and has been instrumental in shaping the interdisciplinary field of moral psychology. [16]

His current research focuses on free will and moral responsibility, the role of moral narratives, and the ethical dimensions of artificial intelligence, particularly in legal and medical contexts. [17] He has developed a method for building human morality into artificial intelligence systems in kidney allocation and medical treatment decision-making  for patients with dementia. [18]

Selected publications

  • Moral Dilemmas, Basil Blackwell, 1988.
  • God? A Debate between a Christian and an Atheist, William Lane Craig and Walter Sinnott-Armstrong, New York: Oxford University Press, 2003.
  • Moral Skepticisms, Oxford University Press, 2006.
  • editor, Moral Psychology (Five Volumes), MIT Press, 2008.
  • Morality Without God?, Oxford University Press, 2009.
  • Think Again: How to Reason and Argue, Oxford University Press / Penguin Books, 2018.
  • Moral AI: And How We Get There (Pelican Books). Pelican. February 8, 2024. ISBN 9780241454763.

See also

References

  1. ^ "Ethicist Walter Sinnott-Armstrong to discuss morality of artificial intelligence | Penn State University". www.psu.edu. Retrieved 2025-06-24.
  2. ^ "Walter Sinnott-Armstrong". GBH. Retrieved 2025-06-24.
  3. ^ Stasio, Frank; Wen, Shawn. "Meet Psychopathy Specialist Walter Sinnott-Armstrong". WUNC. Retrieved 2025-06-24.
  4. ^ a b "Walter Sinnott-Armstrong". The Conversation. 2014-10-28. Retrieved 2025-06-24.
  5. ^ a b "In a logic course, with 180,000 friends". Gulf Times. 2013-01-30. Retrieved 2025-06-26.
  6. ^ "Professor Walter Sinnott-Armstrong". www.uehiro.ox.ac.uk. Retrieved 2025-06-26.
  7. ^ "Duke's Sinnott-Armstrong to deliver Norton Memorial Lecture - The American Philosophical Association". www.apaonline.org. Archived from the original on 2020-07-28. Retrieved 2025-06-26.
  8. ^ Sinnott-Armstrong, Walter, ed. (2008). "Precis of "Moral Scepticisms"". Philosophy and Phenomenological Research. 77 (3): 789–793. ISSN 0031-8205.
  9. ^ Beaulieu, Gerald (2009). "Sinnott-Armstrong's Moral Skepticism: A Murdochian Response". Dialogue: Canadian Philosophical Review / Revue canadienne de philosophie. 48 (3): 673–678. doi:10.1017/S0012217309990199. ISSN 1759-0949.
  10. ^ Craig, William Lane; Sinnott-Armstrong, Walter. "God? A Debate Between A Christian and An Atheist" (PDF). Archived from the original (PDF) on 2010-12-24. Retrieved 2023-12-22.
  11. ^ "Walter Sinnott-Armstrong on Morality Without God". philosophy bites. Retrieved 2025-06-24.
  12. ^ Institute, Christian Research (2011-01-31). "Atheists and the Quest for Objective Morality". Christian Research Institute. Retrieved 2025-06-24.
  13. ^ A Contrastivist Manifesto, Walter Sinnott‐Armstrong, Social Epistemology, Vol. 22, Iss. 3, 2008, DOI:10.1080/02691720802546120
  14. ^ Maoz, Uri; Sinnott-Armstrong, Walter, eds. (2022-01-20). Free Will. Oxford University Press. ISBN 978-0-19-757215-3.
  15. ^ Simmons, Claire; Rehren, Paul; Haynes, John-Dylan; Sinnott-Armstrong, Walter (2022-05-01). "Freedom from what? Separating lay concepts of freedom". Consciousness and Cognition. 101: 103318. doi:10.1016/j.concog.2022.103318. ISSN 1053-8100.
  16. ^ Shepherd, Joshua. "Moral Psychology, Volume 4: Free Will and Moral Responsibility". Notre Dame Philosophical Reviews.
  17. ^ "Are you responsible for your unconscious self? | Walter Sinnott-Armstrong, Uri Maoz, and Liad Mudrik". IAI TV - Changing how the world thinks. 2022-01-10. Retrieved 2025-06-26.
  18. ^ "The challenges of using machine learning for organ allocation. Reply to Sinnott-Armstrong and Skorburg By Esther Braun, Noah Broestl, Dorothy Chou, and Robert Vandersluis. Published October 15, 2021, in response to: How AI can aid bioethics". Michigan Publishing. Retrieved 2025-07-08.



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