请求高手帮忙

这句话应该有什么实例或理论去支持吗？急求帮助！！
even more than other fields of economics, development economics has no universally accepted doctrine or paradigm. instead, we have a continually evolving pattern of insights and understanding that together provide the basisi for examing the possibilities of contemporary development of the diverse nation of africa, asia and latin america.（todaro 2006)

同问,高人指点一下~~~