Interesting talk, but I don't understand one thing. Who actually thought that internet wasn't a physical thing? Did people think that it's based on what, air, somewhere on the actual cloud? Do people think that television isn't physical, thinking that it just "appears"? Is someone who doesn't know that products in supermarkets are delivered there, and don't really grow in their warehouses?
Internet is another way of delivering digital content through the use of a massive web of physical infrastructure, which is why it was labeled WWW. It's not just a cool name; it represent what it ACTUALLY is. There's nothing to think about here. How is that not obvious?
I loved the quote in the end, which is a completely different topic, by the way, and not what the whole talk was about. And I'm not trying to sound smart here - I might not be getting something here - but why does this obvious thing even needs to be explained for adults? Serious question.