The world never stops. It is in a continual process of change.
Hume believed necessary connections existed only in logic. For something to “be”, in a static and eternal manner, is something which occurs in language and the mind, and not in the real world. This tendency to “freeze” (or take snapshots of) things and ideas is an error in concluding that a statement of fact is an unproblematic representation of reality. Not only is a fact a step removed from reality but also a statement of fact remains the same (static) while the reality it describes quietly moves on.