Someone on the Facebook recovery effort has explained that a routine BGP update went wrong, which in turn locked out those with remote access who could reverse the mistake. Those who do have physical access do not have authorization on the servers. Catch-22.
If you are (still) using Internet Explorer: (a) Why?? (b) You NEED to close an ACTIVELY exploited hole ASAP: bit.ly/M2ECiM
SUBJECTIVE Reality == When search engines ONLY SHOW YOU what you WANT to see. FABULOUS 9-min TED Talk: youtu.be/B8ofWFx525s