[ Elliot's eyebrows lift. Fortunately he isn't really into trolling genuine ignorance, so he doesn't try and explain that all internet is a series of tubes in the clouds. ]

Have you ever sent a message using signal fires? Morse code?

[ He's not totally sure what level of technology he's dealing with here. ]

Even right now, when I'm talking to you, I make a noise and you hear it, but we can't see the noise while it travels. The data is stored in machines: computers, servers, phones, I don't want to get into hardware engineering with you.

[ A wry tilt of his mouth. ]

Data travels using light. So it's fast. Invisible. Changing. That's where the internet is.