Beyond the obvious (medical care, accessibility, etc), I think technology has a huge amount of untapped potential to make the end of our lives a lot more bearable, and a lot less lonely. TV is one thing - and whether it's a net good or not has been discussed to death, so I won't here - but I wonder how video games might be used. They're a lot more engaging - both generally and cognitively - than TV, you can build and achieve things and feel a sense of accomplishment (yeah yeah pride and accomplishment), there are communities around them, you can play with your family, etc. Even online board and card games would be an option. Have you ever considered showing your dad some simple games?

Can’t speak to the cognitive benefits of video games in late life, but my grandma really took to our N64 one summer when my brother and I stayed with her.

She used to stay absorbed in a little battery powered draw poker game that she had, but by the end of the summer she had gone through a large part of our game collection and could put up a real challenge in Mario Kart 64.

Eventually we gifted it to her and she played it for years after that.