Oh I remember now
What I meant be nature being consistent was that we are able to derive formulas and patterns from it.
Such as the engineering that allows all those incredible bridges buildings and highways that cut through Bangkok.

Or all the interconnected biology that is able to live, die and breed in a perpetual evolution. That happens because of the way energy behaves - even the quantum is consistent in its seemingly inconsistency.

Perhaps the speed of light is changing, I would not know, but the buildings are not suddenly falling over or floating of into space because of that.