Factually Interesting on Instagram: "The Secret Language: Why a Whole Istanbul Neighborhood Learned to Sign In 2015, a neighborhood in Istanbul, Turkey, orchestrated a heartwarming act of community that captured the world's attention. The project, coordinated by Samsung and a local ad agency, aimed to create a "barrier-free world" for Muharrem, a young man who was profoundly deaf. For one month, dozens of his neighbors, from the local grocer to taxi drivers, secretly attended classes to learn Tu