Funny enough, I went to https://www.isitdownrightnow.com/ to check if Facebook is down, and isitdownrightnow is down itself... probably from the massive number requests coming to check if Facebook is down
It's amusing that the top 3 trending reports are the FB sites that are down, and then the mobile carriers themselves, presumably because when FB doesn't load they assume it's their mobile network's fault. People really do think FB is the internet
It is a really large part of it. Also, when people see WhatsApp and see no connection, then open Facebook and see no connection either, it's _very_ likely that the link is at fault and not Facebook.
Which in turn, reminds of this paper [1] (from someone who previously worked at Facebook).
TLDR; Metastable failures occur in open systems with an uncontrolled source of load where a trigger causes the system to enter a bad state that persists even when the trigger is removed.
