Brad Setser says "Ut-Oh", beating me to the punch on the September trade release, which showed US exports plunging. It's a post that Paul Krugman rightly expresses some angst upon reading. And now I'm going to add two more reasons to worry (not that I think Setser and Krugman aren't aware of these points).
First, after reflecting upon the collapse of exports noted by Setser, think "disaggregate".
Figure 1 depicts exports of capital goods; they declined 10%, exceeding the 8% reported for all goods exports (all calcuations in log terms). That's 10% for September alone. Since the standard deviation of monthly log changes is 3.1% (2004M02-08M9), well, that's pretty significant... Why focus on capital goods exports (more so than say ag exports), given their volatility? Because they represent foreign demand for goods that can be used to produce things; as demand for capital goods goes down, so too should
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