That's set me thinking (you'd better duck).
My mum, who died 6 years ago aged 91, had never touched a computer in her life. She knew what they were and she was used to seeing lots of them in my house, in various states of assembly as my husband was a hardware/software engineer, but she didn't really appreciate what they were for. In 30 or 40 years there will be very few 80 and 90 year olds who can't use a computer and they will be as commonplace as TV sets are today.
That leads me to think of her mother, my grandmother, who was born in 1870. She died in 1924 so I doubt she had even operated a wireless set on her own and my great-grandmother, born in 1843, wouldn't have understood the concept of electricity and she never saw a "horseless carriage". So when I'm 91 or, even more relevant, when
you are 91 what on Earth will be around that we haven't a clue about? It's a staggering thought.
Mind you, I can operate a computer and drive a horseless carriage but I still have trouble setting our video recorder.
