Behaviors and outcomes rarely change, but history is driven by surprising events...? I admit that this juxtaposition of the listed rules confuses me. The first part/rule would seem to indicate that history is driven by predictable, probable, or otherwise bell-curvy events.
Civil rights movement was started by Rosa Park sitting on the bus. It was surprising big event. Most characters in that story kept going by same scripts as before, with only slight variations and only little bit of learning from previous experiences.
I think what Colvin did took much more bravery. And in providing inspiration for Parks’s actions, she’s an under-appreciated hero of the civil rights movement.