here is one example The PSA is a theory of change, meant to locate a programme, project, or campaign within a wider analysis of how change comes about. There are two ways to use it: by looking backwards, in order to explore past stories of change; and by looking forward, by learning to ‘expect the unexpected’. The PSA suggests characteristics that activists should cultivate in order to flourish in complex systems, like curiosity, humility, self-awareness, and openness to a diversity of viewpoints.
you can read "as ig your digging for treasure" because you are so invested in the book you keep looking for every detail and want more and more and more.