They've already intentionally manipulated emotions of a "small number of users" (700k), proved it was possible, and released a paper on it: https://slate.com/te

They've already intentionally manipulated emotions of a "small number of users" (700k), proved it was possible, and released a paper on it: https://slate.com/technology/2014/06/facebook-unethical-experiment-it-made-news-feeds-happier-or-sadder-to-manipulate-peoples-emotions.html https://slate.com/technology/2014/06/facebook-unethical-expe...