My favorite example of conventional ignorance: some guy was traveling on a plane the girl sitting next to him asked him whether there was wifi available so she could browse the internet. This was about 20 years ago... and the guy was convinced that the girl was an idiot. "We were flying in the middle of nowhere, 20000 feet in the air, and this girl is asking me whether we have wifi?? Some people have no common sense!" Turns out there's a fine line between being an idiot and being ahead of your time.
We should all take a moment to appreciate the internet. Soon (if not already) we'll be in a time where most people take it for granted, but few think about what is actually happening. The internet lets you send a packet of data to any other computer on earth, as long as it is connected to the internet. To get that access yourself you only need to connect to the internet somehow, that's it. So sure there are more difficult cases like planes, about they only have to worry about their own particular problem of the last mile, once the data has reached the internet it can go anywhere. Imagine if the planes also had to make arrangements with BBC, Google, governments etc to get data access. It would never happen.
