邦訳：2022年6月・みすず書房New in paperback. Hardcover was published in 2021. Drawing on innovative online experiments and in-depth interviews with social media users from across the political spectrum, this book explains why stepping outside of our echo chambers can make us more polarized, not less. The book takes you inside the minds of online extremists through vivid narratives that trace their lives on the platforms and off - detailing how they dominate public discourse at the expense of the moderate majority.