大象传媒

If all the world鈥檚 population crowded together, where could we all fit? London? Texas? More or Less figures it out, and separates fact from fiction. And, as the soccer season returns, is it possible to measure the effectiveness of a team鈥檚 manager? We hear from David Sally, author of The Numbers Game. This programme was first broadcast on the 大象传媒 World Service.