Never mind computers (my first one, in I think 1985, had two floppy drives and an amber screen, very fancy), it’s phones that blow my mind. I grew up with a heavy black bakelite dial phone that lived on a special bench in the hall, and now I do video calls with my family on the other side of the world from wherever I happen to be. Toll calls used to be a huge deal, you had to call the operator, we didn’t even have direct dialling. I watch TV on my phone, not even Star Trek had that!