I think it's because we don't understand systems as well as we should. This article (http://www.miamiherald.com/news/business/article207841309.html http://www.m

I think it's because we don't understand systems as well as we should. This article (http://www.miamiherald.com/news/business/article207841309.html http://www.miamiherald.com/news/business/article207841309.ht...) is a decent intro to what modeling shows about engagement and polarization. The paper it refers to (https://arxiv.org/pdf/1712.06009.pdf https://arxiv.org/pdf/1712.06009.pdf) goes way deeper.