On the other hand, while maximising that outcome, it really puts in a lot of negative externalities, polluting the relational situation between people. What we used to do, is that we follow the same people and on social media, on blogs, and so on, we can have a shared common ground to talk about. But now, when optimised for engagement, everybody lives in their own world and the social fabric became so strip-mined so that there's no common ground to talk about.