So what should a designer or a developer be doing now, to make things better in 10 years, or 100 years?
It seems like a cheap answer, but it needs more people, with more perspectives, trying out various answers to this question.
I suspect the greatest long-term leverage comes from providing people relief from the cognitive load of fighting for food, shelter, health, transportation, and education.
Those are heavy goals that lots of people have spent lots of time shifting only very slowly. The little-Alan-Kay-in-my-mind replies, "We need better thinking-tools in order to do it faster", which I can half-believe, but beyond that, I get stuck. I don't see how to work backwards from that to a first step that can actually be taken.