I like thinking about obsolete terms and technologies. They whisper tantalizing hints about the future if we pay close attention.
Also revealing: how we explain old things to children. "What's a record store, daddy?" "It's like iTunes, but in a building."
I particularly love the term Information Highway. It seemed so exciting then, so dull now. We're not going on a trip. Everything comes to us
Also consider how cybercafes were a thing. They seemed like really exciting places when I was a kid. I wanted to run one as an adult one day
So the impt lesson is to look at the present configuration of reality as temp. Never imagined I'd have a magic glass rectangle in my pocket!
It's also interesting how neither Facebook (directory/social network) nor Twitter (microblogging) anticipated they'd be "social media".
And in 2005, it wasn't obvious that people would make a living on YouTube. Seems "duh" today. What will seem "duh" in 5, 10, 20 years?