From Charles Kenny's new book Getting Better. We are reading this book together on our Facebook page. Follow along!"The bright spots [in Africa] are tiny. Botswana and Mauritius have both posted impressive GDP per capita growth rates for extended periods but have a combined population of about 2.5 million people. More representative of the region's performance is the fact that the average rural Zambian will enjoy a lifetime income of about about $10,000, compared to a lifetime of around $4.5 million for the average resident resident of New York City..."