1st Edition

Ethical Theory 50 Puzzles, Paradoxes, and Thought Experiments

By Daniel Muñoz, Sarah Stroud Copyright 2025
    256 Pages 2 B/W Illustrations
    by Routledge

    256 Pages 2 B/W Illustrations
    by Routledge

    In this new kind of introduction to ethical theory, Daniel Muñoz and Sarah Stroud present 50 of the field’s most exciting puzzles, paradoxes, and thought experiments. Over the course of 11 chapters, the authors cover a huge variety of topics, starting with the classic debate between utilitarians and deontologists and ending on existential questions about the future of humanity.

    Every chapter begins with a helpful introduction, and each of the 50 entries includes references for further reading and questions for reflection. Among the entries are such classics as the Ring of Gyges, Jim and the Villagers, the Repugnant Conclusion, JoJo, “One Thought Too Many,” the Miners Puzzle, the Gentle Murder Paradox, Nowheresville, the Experience Machine, and the Trolley Problem. The book also explores several more recent topics of interest, such as doxastic wronging and the ethics of AI, so that even advanced students are likely to discover something new. Each entry can be read on its own, and the writing is accessible and conversational throughout, making this an ideal resource for undergraduate teaching. Readers at any level can pick up this book and see for themselves how fascinating—and puzzling—ethical theory can be.

    Key Features:

    • Offers 50 puzzles, paradoxes, and thought experiments, with every entry including the following elements:
      • Presentation of the case
      • Discussion of responses to and implications of the case
      • A reading list which cites the classic presentation of the case and recommends several other treatments or responses
      • Questions for reflection
      • Coverage of each of the 50 is self-contained, allowing students to quickly understand an issue and giving instructors flexibility in assigning readings to match the themes of the course.
      • Additional pedagogical features include a general volume introduction as well as smaller introductions to each of the 11 larger, topic-oriented chapters.

    Introduction

    1. Utility and Consequences

    1. George and the Bioweapons

    2. The Utility Monster

    3. Parfit’s Harmless Torturers

    4. Infinite Utility

    5. World Cup Accident

    2. Killing, Letting Die, and Trolley Problems

    6. The Trolley Problem, Part I: Bystander at the Switch

    7. The Trolley Problem, Part II: Footbridge

    8. Drowning and Letting Drown

    9. The Tactical Bomber and the Terror Bomber

    10. The Trolley Problem, Part III: The Meta-Trolley Problem

    3. Puzzles about Rights

    11. The Paradox of Deontology

    12. Nowheresville

    13. Thomson’s Violinist

    14. Feinberg’s Cabin

    15. The Paradox of Self-Release

    4. Partiality

    16. Singer’s Pond

    17. David and the Scarce Drug (The Numbers Problem)

    18. The Third Man

    19. The Archbishop and the Valet

    20. One Thought Too Many

    5. Moral Dilemmas

    21. Kant’s Murderer at the Door

    22. Jim and the Villagers

    23. Sophie’s Choice

    24. The Gentle Murder Paradox 

    6. Supererogation

    25. The Paradox of Supererogation

    26. The All or Nothing Problem

    27. Kamm’s Intransitivity Paradox

    28. What’s Wrong with Exploitation?

    7. Well-Being and Value

    29. The Experience Machine

    30. Should We Wish for Immortality?

    31. Should We Fear Death?

    32. Moore’s Beautiful World

    33. Sweetening

    8. Moral Psychology and Motivation

    34. The Ring of Gyges

    35. Moral Worth

    36. Augustine’s Pears

    37. The Deferential Wife

    9. Moral Responsibility

    38. Frankfurt Cases

    39. Wolf’s JoJo

    40. The Paradox of Forgiveness

    41. Moral Luck (The Lorry Driver)

    10. Belief and Ignorance

    42. Wronging by Believing?

    43. The Miners Puzzle

    44. Moral Uncertainty

    45. Cluelessness

    11. Future Generations

    46. Ex Machina and the Future of AI

    47. Children of Men

    48. The Procreation Asymmetry

    49. The Non-Identity Problem

    50. The Repugnant Conclusion.

    Index

    Biography

    Daniel Muñoz is Assistant Professor of Philosophy and Core Faculty in Philosophy, Politics, and Economics at the University of North Carolina at Chapel Hill, USA. He received his PhD from MIT in 2019, and is writing a book about the foundations of deontology entitled What We Owe to Ourselves.

    Sarah Stroud is Professor of Philosophy and Director of the Parr Center for Ethics at the University of North Carolina at Chapel Hill, USA. She has published widely in ethical theory, moral psychology, and metaethics and was a co-editor (with Hugh LaFollette, Editor-in-Chief, and John Deigh) of The International Encyclopedia of Ethics (9 volumes; 2013).