GPS is a pretty amazing technology, especially when linked to digital OS maps! On that other bit of amazing tech, my mobile phone, I have the OS maps for the whole UK (minus NI) at 1:250,000, 1:100,000, 1:50,000, 1:25,000, and 1:10,000 scale and can use the phone's GPS to navigate using them. And by careful buying, I got the whole lot for only about £225.
I am older than many of you so I can actually remember the first live TV broadcast from the USA to the UK, which gobsmacked us all at the time. I can remember my family being the only one in the street to own a TV (small, unreliable, 405 lines, B&W, and 2 channels (BBC/ITV) which were only broadcast a few hours a day!). No mobiles, no home computers, no this/that/the other ... I used a slide rule and/or log tables at school and though digital calculators were just becoming available, they were incredibly expensive (many hundreds of pounds for one that only did addition, subtraction, multiplication and division) so we were not allowed to use them in exams because it would have given an unfair advantage to the rich kids!
It is pretty scary to think how much things have changed in just over half a century. The world is going to be a very different place in another 50 years time, though I won't be around to see it ...