If you listen to the wrong people, the North American manufacturing industry is doomed.

There is no denying that the U.S. and Canada have been losing jobs to offshore competition for almost half a century. From 2000 to 2010 alone, 5.6 million jobs disappeared.

Interestingly, though, only 13 percent of those jobs were lost due to international trade. The vast remainder, 85 percent of job losses, stemmed from “productivity growth” — another way of saying machines replacing human workers.