というある意味平凡な結論を導き出した論文をUDADISIが紹介している。 以下はその要旨。 Despite the ubiquity of soccer fans and soccer talent throughout the global community, the highest quality soccer played on a weekly basis is constrained to a handful of European professional leagues, and the last two World Cup championships have been decided by a match between European teams. The dominant national team of the current era, Spain, hosts