Systemic shifts in the small often look like nothing, but at the macro scale look like everything.

If you're zoomed very far into a massive wave change, each individual movement looks small, motivated, obvious locally.

"Well my uncle is offering me a job in the city, so I'll leave the countryside and go", But at the macro scale it can be a tsunami (e.g. everywhere in the world is urbanizing quickly).

The question of how big the trend is is how consistent is the movement?

Does everyone have a consistent bias, or is it mostly random noise?