“One study of America’s Fortune 500 companies found that the one quarter with the most female executives had a return on equity 35% higher than the quarter with the fewest female executives. On the Japanese stock exchange, the companies with the highest proportion of female employees performed nearly 50% better than those with the lowest. In either case, the most likely reason isn’t that female executives are geniuses. Rather, it is that companies that are innovative enough to promote women are also ahead of the curve in reacting to business opportunities. That is the essence of a sustainable economic model.”