Technologies from 2020 would seem like science fiction to people from 1970.

Cell phones are a starting point.

All the personal computers, laptops, and tablets.

The Internet

Medical care is amazing compared to 1970.

Printing technology like books, with computers it is a piece of cake.

Personal information. If a criminal lied to someone about who they are it would take weeks or months to get them sorted out.

Online store and ordering.

GPS. I spent part of my childhood lost in a car.

TV technology. Both the quality of the image and how the image is delivered. Blue ray technology.

People get used to new technologies and forget what life was like without them, they even forget how much they changed their lives.

I was born in 1966.

I remember being thrilled when cell phones came along. Those who were fixed in the cars!

After that, the advent of smartphones, fast and very cheap (or free) internet. Today, these are phones by name alone, in fact they are extremely powerful pocket computers, with thousands of functions.

Ability to listen to music or have the phone recognize the music I am listening to in a second, the ability to record top-quality video and edit the recording? It’s pure science fiction.

Watching videos and video calls on your phone? I didn't think I would experience that. I remember as children we commented on the possibility of talking over a wristwatch because we saw it in comics. Now I really talk like that.

Blade runner is regarded as one of the greatest sci fi stories ever written. The movie shaped the next generation of science fiction movies. Although it was released in 1982, it was aimed at the people who were young or teenagers at the 70s , so I think it can work as a mirror of people's prediction of the future during the 70s.

What's more interesting is the fact that the plot takes place in 2019, exactly 1 year before 2020. So what is the thing with this movie you say. In the poster I've posted above, the girl with short curly hair and the guy above her (the blond guy) is actually genetically engineered slaves working on another planet.

But that's not what made the movie so cool, no.

Solar panels, CCTV, GPS, Smartphones and iPads (I suppose the last two mean the internet) stand out, but I can't think of much else at all to be honest.

Before I go on, It's definitely worth mentioning that modern surgery and medicine have advanced a lot in 50 years, a lot. This has surprised and impressed me.

The thing is, the technology age was well underway by 1970 and most of us knew to some degree that computers were coming - think moon landing in 1969, which had the whole planet watching on in awe. I can't impress upon you too much how big an event the moon landing was, and don't forget we watched it live.

Have you heard of the futuristic 1960’s TV cartoon series called The Jetsons? Well we thought back then we'd be talking on telescreens and flying to work by 2000, I'm still disappointed I don't own a flying jetski and a robot.

Nukes, rockets, jets, satellites, early computing, x-rays, vaccines, special effects, quality sound systems, live TV, it was all there 50 years ago.

Most of the modern phenomena are just evolutions of technologies that already existed in 1970. My small college had a computer in 1981, only one though. Everything is better, but not much is new.

Smartphones and tablet computers, with their built-in video cameras and live broadcasting capabilities.

Google Translate, which has gone from being barely adequate to genuinely useful in about five years flat. I still find it amazing.

Good optical character recognition.

Photorealistic simulated 3D environments rendered at 100 frames per second in 4K resolution.

The Internet wouldn't, it was dreamed of long before.

3D printing of objects, particularly the the systems that make metal parts using lasers and powdered materials. The completed item seems to just rise out of pool of powder. At the other end the units that can make a plastic object from a computer design and cost less than a couple hundred dollars would seem impossible.

Another technology would be the UAV, from small toy models that can still transmit HD video up to the large and deadly military units.