“…By contrast, our paper generates random variation in exposure within the social network. It is also related to Gong, Zhang, Zhao, and Jiang (2017), who experimentally vary tweets in China on Sina Weibo about TV programs and measure the impact on TV viewership. 9 See Kempe, Kleinberg, andTardos (2003, 2005); Banerjee, Chandrasekhar, Duflo, and Jackson (2013); Kim, Hwong, Staff, Hughes, O'Malley, Fowler, and Christakis (2015); Beaman, BenYishay, Magruder, and Mobarak (2016); Banerjee, Chandrasekhar, Duflo, and Jackson (2018a); Akbarpour, Malladi, and Saberi (2018).…”