 An original manner of responding to apparent counterexamples to supervenience takes a semantic turn. In the lone-particle example reported above, there is a world with the lone particle traveling at one meter per second, though it is not a law that all particles travel at that speed. There is also a world with the lone particle traveling at one meter per second, though it is a law that all particles are traveling at that speed. This reasoning does not contradict supervenience because of the context sensitivity of the predicate, ‘is a law’. Though the sentence, ‘It is a law that all particles travel at one meter per second’ is (i) true relative to one context/world pair and (ii) false relative to a different context/world pair. This difference in truth-value could merely be the result of a difference between two contexts (Roberts 2008, 357–61).