To Yap, GIS maps, statistical quantification and other such techniques are merely basic tools for exploring human social issues. There's nothing lofty or mysterious about them, and they're no substitute for in-depth historical and social analysis.
對於葉高華而言，GIS 地圖、統計量化等等技術，只是用來探索人文社會議題的基礎工具，既不高明也不神秘，更不能取代深層的歷史、社會分析。