What is something that's crazier than the wildest dreams of any ~1970s nerd, but exists today? I'll start with an easy one:

Personally, I’d go with 80s/90s nerds, as it would take a special kind of 70s nerd to understand digital storage enough to be wowed by a 4tb sd card.

Multi-gigabit network speeds being common in people’s homes. 400mbps+ wifi speeds being common too.

4KUHD tvs and on your phone. Small B&W crt tvs were extremely common.

Bluetooth headphones, cords were a pain.

The more I say, the more I think, basically everything.

I just did the math on network speed the other day. I remember our local dial up ISP upgrading to 56k from 28.8 and it blew me away, although I rarely connected above 33.6. I’m currently on 1200 mbps, nearly 23,000 times faster than 56kbps and about 37,000x faster than the 33.6 I actually received.

I can transfer in one second what took about 10 hours before. A movie I just watched would have taken over 95 days to download at 90s speeds.