作者总结了非洲统计数据上的无知与错误,虽然也没有提出一整套可靠的经济数据,但至少让我们知道“我们不知道”。2010年,加纳统计部门宣布,他们对本年度的GDP统计口径重新调整,比前一年的数据提高了60%。这一事件在全世界发展经济学家之间引起轩然大波。很多学者开始反思,对于非洲,我们究竟知道多少?过去几十年针对非洲的经济发展政策,又有多少实际依据? The author summarizes the ignorance and errors in the statistics of Africa. Although there is no comprehensive set of reliable economic data, we at least let us know “we do not know”. In 2010, Ghana's statistics department announced that they have readjusted their GDP statistics this year, a 60% increase over the previous year's figures. This incident caused an uproar among development economists throughout the world. Many scholars have begun to reflect on how much we know about Africa and on how many practical bases for economic development policies on Africa in the past few decades?