When you see a sorting machine that jiggles lots of pieces so they align, that's because pieces don't align naturally. It's a fix for chaos, for things that naturally behave like "doing whatever".

Industrial machinery is full of this in all sorts of places. Even in precision engineering. Press-fits and interference-fits, etc. We deal with lack of precision all the time.

Engineers are _absolute chads_ on this kind of thing. We tame chaos like no other professional.