When did mankind fall?

Catholics: 500,000BC. Adam and Eve.
Chicago Conservatives: 1287. Birth of William of Ockham.
Constitutionalists: 1861. First Lincoln executive order.
Goldbugs: 1913. Federal Reserve Act.
Bitcoiners: 1971. Fiat money.

Me: 2009. Node.js.

(and the rest of the AJAX/websockets/React/html5 nexus — a stack that enabled live updating of webpages, which in turn meant you didn't need to refresh to get notifications. made social media what it is.)