Proponents of secular stagnation argue that government spending as a share of GDP, which has more than doubled in most advanced economies since the 1950s, should continue to rise. Although one can readily agree that high-yielding government investments in education and infrastructure are especially justified today, the idea that demand permanently constrains supply in a significant way is dubious.
长期停滞理论的支持者认为政府支出占GDP份额虽然从20世纪60年代起在最发达经济体增长已超过两倍，但仍将延续上涨态势。虽然人们很容易认可教育和基础设施领域高效益的政府投资在今天看来尤其必要，但由此推定需求将永远限制供给的看法却在很大程度上值得怀疑。针对近期衰退更深入的研究表明失业领域所谓的持续“滞后”效应已经相对有限，至少在美国的情况如此。