Though is it? The more deeply we look, the more uncertain things become. The electron orbital position of a constituent proton is precluded by information on its momentum.
So the universe is fundamentally uncertain, though we've yet derived a pretty accurate representational way of describing it.
A hand, or pneumatic hammer may not ultimitely be the best way to drive a nail. But they work.
Exactly my point-- your language, your math, and your science aren't up to a true definition of natural phenomenon. If they were you would understand that a blade of grass is the antithesis of unstable.
I know this is true because I have never seen nor read of an orbital electron breakdown in grass. Therefore, its not the grass that is unstable but the scientific model attemping to define it.