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.

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