My response when a non-tech person talks about how the internet works. Like when my mom felt dumb for not knowing the difference between a browser and a search engine. “It’s just a series of tubes, mom.” Which reminded me of a great link I had seen of all the underwater fiber cables running around the world.
This got me thinking, how big are these tubes? Wikipedia says modern cables are only 25 mm (1 in) in diameter. That just seems bonkers to me.