Facebook's "Experimental evidence" hypothesis amounted to "let's see if we can plant unhappiness and make it spread." The hypothesis was tested on a large group of people -- and their networks -- that couldn't consent to the experiment, and had no way to actually track whatever impact it had on people's lives.
Facebook, once again, did what it's good at: tracking us, failing to get consent, and avoiding accountability.
Adam Kramer -- who worked on both studies -- posted a non-apology to Facebook that utterly missed the point, saying they were sorry about the way they had described the experiment while attempting to re-frame the concept of user consent as if it were a formality.
In classic Facebook style, he blamed users for being upset, as if news of emotional tampering in people's day-to-day lives was simply a misunderstanding that only anxious people worried about.
Facebook: Unethical, untrustworthy, and now downright harmful