The insightful authors of "This Time It's Different" Carmen Reinhardt and Ken Rogoff are at it again, doing a simple yet crucial empirical analysis correlating sovereign debt (both government and external), and inflation (in some case) with GDP growth. It will come as no surprise to anyone that the more indebted a country is, with a government debt/GDP ratio of 0.9, and external debt/GDP of 0.6 being critical thresholds, the more GDP growth drops materially. Alas for the US, which is on the wrong side of this threshold, at the rate Geithner is issuing debt, the US economy will be able to grow organically, and not through stimulus after Keynesian stimulus, only after the administration manages to find a way to reduce its massive and growing debt load. In other words never.

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