These forecasts have been wrong not because EU countries failed to implement the prescribed policies, but because the models upon which those policies relied were so badly flawed. In Greece, for example, measures intended to lower the debt burden have in fact left the country more burdened than it was in 2010: the debt-to-GDP ratio has increased, owing to the bruising impact of fiscal austerity on output.
这些预测错误的原因不在于欧盟国家没有实施规定的政策，而是在于作为这些政策基础的模型缺陷太大。比如，在希腊，旨在降低债务负担的措施实际上导致了该国背上了比2010年还要沉重的债务负担：债务-GDP比率因为财政紧缩对产出所造成的消极影响而增加。至少国际货币基金组织（IMF）承认了这些理论和政策失误。