Why is this “interesting?”
Over at Freakinomics Justin Wolfers makes the following observation:
There’s interesting research waiting to be done explaining just why some countries have been hit harder by the global financial crisis than others. . . .
[Graph showing bigger declines in GDP in countries with larger medium and high-skilled manufacturing sectors]
The lesson: the greater your involvement in producing high-value goods, the harder the fall. Perhaps macroeconomic stability comes despite GM, rather than because of it.
Suppose the big drop in GDP in countries like Germany, Japan and Taiwan was not caused by the financial crisis, but rather by the huge drop in worldwide aggregate demand. In that case wouldn’t you expect output to fall faster in countries that had relative large capital goods sectors (including consumer durables like cars and flat panel TVs?) And shouldn’t the recession be milder in countries that focus on services, such as the US and UK? If so, then there’s really nothing “interesting” to be explained. Sorry to be such a killjoy, but the answer is right in front of our face, we simply refuse to see it. Monetary policy errors allowed NGDP to fall not just in the US, but almost everywhere. The results are exactly what the textbooks say should happen.