The Centre for Urban Pedagogy has a great primer on social impact design. It’s the story of Dick and Rick. Dick is a bit obnoxious and thinks that he knows best how to solve a community’s problems. But he’s really out for his own self-aggrandisement.
Rick takes the time to learn from the community and helps them learn to design for themselves. Rick leaves the community in better shape than he found it, mostly by surfacing skills already in the community.
It’s really a lovely document and it’s available to download for free.
(I found out about this from Alice. Thanks, Alice!)