you know, i think it's basically already been explained, but, the article is just applied data. it's the same thing as aying that red cars get in crashes more often than all other cars, which they do, but only because there are more red cars than any other color. the argument is valid, but not necessarily factual. The data for this article is based on scandinavians, who, for the most part are nted for being reserved in public and for drinking a lot, and since many scandinavians are blue eyed, their argument is valid. it's just a matter of semantics not actual genetic law.