 According to condition (iii), a cause is a sufficient condition for its effect in this sense: all \(c\)-like events occurring in the actual world are in fact followed by an \(e\), where the actual world is understood as the collection of all particular spatiotemporal matters of facts. The sufficiency of the cause for the effect is not to be understood in a modally stronger sense (Dowe 2000: 20). In particular, Hume denies that a cause necessitates its effect. In the world, there is—to use Hume’s phrase—just a “constant conjunction” between cause and effect.