 Without additional structure on the logical space we have just three factors for a theorist of truthlikeness to work with – the size of a proposition (content factor), whether it contains the actual world (truth factor), and which propositions it implies (consequence factor). The likeness approach requires some additional structure to the logical space. For example, worlds might be more or less like other worlds. There might be a betweenness relation amongst worlds, or even a fully-fledged distance metric. If that’s the case, we can start to see how one proposition might be closer to the Truth – the proposition whose range contains just the actual world – than another. The core of the likeness approach is that truthlikeness supervenes on the likeness between worlds.