假如你打算看2006年世界杯锦标赛参赛的所有足球队员的出生证明书，你会发现一个引人注目的巧合：那就是大部分种子选手精英球手们都出生在前半年。

• If you were to examine the birth certificates of every soccer player in 2006's World Cup tournament, you would most likely find a noteworthy quirk: elite soccer players are more likely to have been born in the earlier months of the year than in the late months.