How African Innovation Can Take on the World. Calestous Juma, August 6, 2013, Opinion. "In this period of gloomy economic forecasts, Africa's rise has become a widely discussed international policy topic. The sweeping optimism about Africa's economic prospects has been reinforced by 2013 projections that the continent will grow faster than the world average. The content of the growth, however, has been a source of discomfort among African leaders. They worry that this growth is linked to a commodity boom which is fueled largely by China's demand..."