> The authors did find that the shift from rationality to sentiment in book language accelerated around 2007 with the rise of social media, when across language

> The authors did find that the shift from rationality to sentiment in book language accelerated around 2007 with the rise of social media, when across languages the frequency of fact-related words dropped while emotion-laden language surged, a trend paralleled by a shift from collectivistic to individualistic language. Engagement algorithms, most likely. People are probably more likely to engage longer if they're emotionally stimulated than bombarded with a bunch of pesky facts.