Errr, I'll give you 50% credit for pulling out the catch phrase "comparative advantage" which indeed is used to weakly describe the concepts Mr. Smith was outli

Errr, I'll give you 50% credit for pulling out the catch phrase "comparative advantage" which indeed is used to weakly describe the concepts Mr. Smith was outlining. As for the article itself, as it is from harvard business school, the author may indeed be concerned about margins. I'm more interested in the inherent dangers of a system that makes you extremely vulnerable in bad times, and how to balance that against the obvious advantages, in good times, of that system.