Why do systems of power change over time?

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.

Explanation:

over time veiw points change

she swerves to avoid the turtle.

- "the die is cast; i have consented to return if we are not destroyed. thus are my hopes blasted by cowardice and indecision; i come back ignorant and disappointed. it requires more philosophy than i possess to bear this injustice with patience. i have lost my hopes of utility and glory; i have lost my friend."