Summary: In an iconic set of ethics problems, a trolley is about to run over five people who are tied to the tracks. Depending on the variation, you can divert the trolley to another track that only one person is tied to, or push a very large man, “the fat man,” in front of the trolley to stop it—also sacrificing one life for five. What do you do? How do you decide? What’s the difference between these two options? Joy Cardin talks to philosopher who has a new book out on the trolley problem about these questions and more.
