From this arty on rapid evolution of mankind : Rapid Evolution
There are other mysteries too. “Nobody 10,000 years ago had blue eyes,” Hawks said. “Why is it that blue-eyed people had a 5% advantage in reproducing compared to non-blue-eyed people? I have no idea.
Damn scientists must not date much. The reason why blue eyes are an advantage is because they are more attractive. DUH! This is a blanket statement that is true in general. The reason for it could be as simple as that there are fewer and the brown eyed of the world follow the same natural impulse to reproduce with those who will enhance genetic diversity.
This is a perfect example of why you should use your common sense in all things. There are obvious reasons for things that popular culture CHOOSES not to know. Later in the article you find this comment:
Among the fastest-evolving genes were those related to brain development, but the researchers aren’t sure what made them so desirable, Hawks said.
For christs sake we know what made them desirable. Maybe not HOW they performed their magic but WHY ?…. We bloody know WHY!! The human race is locked in a struggle analogous to AMD versus Intel. The processor with the most power wins the market share for fux sake.
Remember these people are the ones telling you not to question MMGW ( man made global warming )