They might want to finish up the "Clear History" feature he announced last May [0] first...
> "If you watch the presentation, we really had nothing to show anyone," said one person, who was close to F8. "Mark just wanted to score some points." [1]
[0] https://www.recode.net/2018/12/17/18140062/facebook-clear-hi...
[1] https://www.buzzfeednews.com/article/ryanmac/facebook-privac...