Robert Chen: "our rivalry with YouTube (in combination with our former focus on the time spent metric) has led Facebook to take self-destructive actions such as doubling the amount of video watch time in 2017"

• "'The future is already here — it's just not very evenly distributed.' Is Facebook missing the future by not optimizing for teens in high GDP countries?" • "Including or not including YouTube in the kmeans clustering didn't change the results. This suggests that YouTube is different from the other apps (i.e., Facebook, WhatsApp, Snapchat, Instagram, Messenger) in the clustering" ◦ "I have come to believe more strongly that our rivalry with YouTube (in combination with our former focus on the time spent metric) has led Facebook to take self-destructive actions such as doubling the amount of video watch time in 2017"