From last week's Wall Street's Journal article, “Facebook Knows It Encourages Division. Top Executives Nixed Solutions: The social-media giant internally studied how it polarizes users, then largely shelved the research”:

The high number of extremist groups was concerning, the presentation says. Worse was Facebook's realization that its algorithms were responsible for their growth. The 2016 presentation states that “64% of all extremist group joins are dude to our recommendation tools” and that most of the activity came from the platform's “Groupss You Should Join” and “Discover” algorithms: “Our recommendation systems grow the problem.”

No shit. Sadly, the man in charge didn't give a shit:

The debate got kicked up to Mr. Zuckerberg, who heard out both sides in a short meeting, said people briefed on it. His response: Do it, but cut the weighting by 80%. Mr. Zuckerberg also signaled he was losing interesting in the effort to recalibrate the platform in the name of social good, they said, asking that they not bring him something like that again.

Message to Mark: