Costs, Technology and Technical Change: Autor, Levy and Murnane piece uses two back office departments in a bank to show how and why computers substituted for some human tasks and complemented others.

• 4成本、技术及技术移转：Autor,Levy及Murnanepiece以2个银行部门为例来说明为什麽及如何以电脑取代人力可完成的任务。