Summary of peer-reviewed research - “Understanding Echo Chambers and Filter Bubbles: The Impact of Social Media on Diversification and Partisan Shifts in News Consumption” - by its authors, who found:more time spent on Facebook, the more polarized their online news consumption becomes...Facebook usage is five times more polarizing for conservative…

reddit community called Change My View ... a ready-made natural experiment ... feed it into programs ... to understand the back-and-forth between human beings ... discovered two things: what kind of arguments are most likely to change people’s minds, and what kinds of minds are most likely to be changed. https://www.reddit.com/r/changemyview/ : po…