Even if the first hurdle can be overcome, the second, namely establishing precisely what the actual laws are, may seem daunting indeed. In a sense, what we are asking for is precisely what 19th and 20th century physicists sometimes set as their goal: the Final Theory of Everything. But perhaps, as Newton said of establishing the solar system’s absolute motion, “the thing is not altogether desperate.” Many physicists in the past 60 years or so have been convinced of determinism’s falsity, because