The Internet: Packets, Routing & Reliability

A natural place to start, because every email, video call and web page you use travels this way. Vint Cerf, one of the internet's founders, and Spotify engineer Lynn Root show how a message is chopped into small pieces called packets, sent by whatever route is cheapest at the moment, and checked off at the other end so nothing goes missing. It runs about six minutes, with animation doing the heavy lifting. Afterward, phrases like "dropped packets" or "the request timed out" stop sounding like jargon and start sounding like a postal system having a bad day.