Three Sentences That Could Change the World — and Your Life

Today’s show is built around three simple sentences: “Future people count. There could be a lot of them. And we can make their lives better.” Those sentences form the foundation of an ethical framework known as “longtermism.” They might sound obvious, but to take them seriously is a truly radical endeavor — one with the power to change the world and even your life. That second sentence is where things start to get wild. It’s possible that there could be tens of trillions of future people, that future people could outnumber current people by a ratio of something like a million to one. And if that’s the case, then suddenly most of the things we spend most of our time arguing about shrink in importance compared with the things that will affect humanity’s long-term future. William MacAskill is a professor of philosophy at Oxford University, the director of the Forethought Foundation for Global Priorities Research and the author of the forthcoming book, “What We Owe the Future,” which is the best distillatio