Matthew Slaughter of the Tuck School, Dartmouth, says that the principle of comparitive advantage should determine what America exports and imports. Under comparitive advantage each country concentrates its energies on the particular goods and services that it does better than other countries. Free trade operates under the idea of comparitive advantage, but in practice it is quite different than its textbook economic counterpart. It is constantly changing as new countries or industries in different countries try to upset the existing pattern. Under a textbook example Airbus should not exist because Boeing was the most efficient manufacturer upto that time, and new entrants in a industry are nurtured for years with support from the governments of their countries. And in some situations the governments may exclude certain companies or industries from support such as Komatsu and construction equipment in postwar Japan, and Infosys and software outsourcing in India, and still survive and grow. Under comparitive advantage Japan should still be importing construction equipment from Caterpillar in the US, and there would be no serious competition in that industry. This would work to the detriment of the principle of competition in free trade which is just as important to free trade as the idea of comparitive advantage, with new entrants in an industry upsetting the old way of doing things and creating price/quality improvements. Slaughter simply pulls back off the shelf the old idea of comparitive advantage without seriously considering its real life aspects. Without dealing with trade distortion from currency manipulation, from the impact on jobs, without considering the continuing critical role of manufacturing in developed economies to provide the standards of living for a large middle class, and creating the kind of society that people of developed countries aspire to. He mentions GE's Immelt and the President's Council on Jobs, but makes no effort to engage Immelt 's statement in his recent op-ed article in the Washington Post, that the concept of transitioning from a export-oriented economic powerhouse to a services led consumption based economy could be done without loss of jobs, prosperity and prestige, was fundamentally wrong. He has only one line for manufacturing's role in America's economy. This line says knowledge intensive industries such as education and software are just as important as manufacturing, but fails to mention that manufacturing has received less attention in recent decades. In so doing he is discounting his own profession of concern for the high rate of joblessness in the U.S., and the need for a new focus on manufacturing in the U.S. to reverse that trend. By saying that imports are not a sign of failure but can raise standards of living, and leaving it at that, Slaughter does not acknowledge that consumer debt that US consumers have taken on in the process certainly affects future prospects for the US economy. And he makes no mention of the need for rebalancing the world economy, which is exactly how free trade should work ideally. Countries that have high imports export more to rebalance the world trading system, as currency valuations are allowed to adjust makig their exports more attractive. By not taking into account the realities of free trade, and the need for practical measures to rebalance without policy induced distortions by state run economies, Slaughter ignores the idea of free trade that works as it should and for all countries. The irony is that Immelt's own committment to jobs and competitiveness has been questioned in online blogs and most recently by an editorial in the Wall Street Journal on January 26, 2011, titled "The Misallocators." That editorial refers to the outsize role of GE Capital in GE's earnings during the past decade, and the lack of credibility of a focus on competitiveness and jobs that this creates for GE. It mentions the loss of 34,000 GE jobs in the US during the last decade. ...