 Although possible worlds became popular among analytic philosophers after revolutionary advances in modal logic in the 1960s, possible worlds receive little attention from existentialists. Their discussion of objects is more in line with powers ontology advocated by Heil. Indeed, some existentialists picture nothingness as a kind of force that impedes each object’s existence. Since there is something rather than nothing, any such nihilating force cannot have actually gone unchecked. What could have blocked it? Robert Nozick (1981, 123) toys with an interpretation of Heidegger in which this nihilating force is self-destructive. This kind of double-negation is depicted in the Beatles’s movie Yellow Submarine. There is a creature that zooms around like a vacuum cleaner, emptying everything in its path. When this menace finally turns on itself, a richly populated world pops into existence.