The idea that how we organize ourselves socially online might lead to echo chambers and deepening division was around long before the phrase "social media" had

The idea that how we organize ourselves socially online might lead to echo chambers and deepening division was around long before the phrase "social media" had ever been used. That this phenomenon came about through the heretofore unprecedented (sarcasm) exploitation of human credulity and vanity, that dopamine spikes are the very mechanism of addiction, and that we react more strongly to things that trip our amygdalae than our cortices, should surprise precisely no-one — least of all the people who were building tools predicated upon those things. None of this stuff is new. None of this stuff is news. You don't get to play ignorant of the implications of the things you're building. Not while you're selling your time on the basis of how smart you are, anyway.