Most economists forecast the world a year from now to look a lot like the world today, with unemployment and profit margins about the same, wages and prices on average about 1.5% higher, total production up roughly 2%, and risks on both the upside and the downside. But many investors see a substantial chance of 2008 and 2009 redux, whether triggered by a full-fledged euro crisis or by some black swan that we do not yet see, and fear that, unlike in 2008 and 2009, governments would lack the power and will to cushion the economic impact.