That observation should not, however, overshadow fundamental economic insights – specifically, that trade and the location of production are determined by comparative, not absolute, advantage. A country will always have a comparative advantage in something; but that something changes.
但是，这一观察无法压倒基本经济学洞见——具体而言，就是贸易和生产地由比较优势而非绝对优势决定。一国总会在某些方面拥有比较优势；但“某些方面”是会变化的。