 Predictive determinism states that everything is foreseeable. Metaphysical determinism states that there is only one way the future could be given the way the past is. Simon Laplace used metaphysical determinism as a premise for predictive determinism. He reasoned that since every event has a cause, a complete description of any stage of history combined with the laws of nature implies what happens at any other stage of the universe. Scriven was only challenging predictive determinism in his thought experiment. The next approach challenges metaphysical determinism.