Meanwhile, digital platforms can amplify walls or bridges at speed. Eli Pariser’s The Filter Bubble (2011) and Cass Sunstein’s work on echo chambers (Republic.com, 2001) warn that algorithmic curation narrows perspective. Yet bridge-first efforts exist: Spaceship Media (founded 2016) convenes cross-partisan dialogues and co-produces journalism with participants, turning comment threads into conversations. Even small design nudges matter—Twitter’s 2020 prompt to read before retweeting increased article opens—making it likelier that nuanced, connective stories travel farther than outrage. [...]