A confession: I was never very good at macroeconomics as an undergraduate, and my postgraduate studies were even more of a challenge. My lecturers described the economy as the solution to an inter-temporal optimisation problem in which a single representative household decided how much to consume and how much to save. I struggled with the sums (they were hard ones) and almost as much with the entire concept, which seemed to ignore what was interesting about macroeconomics. I did what I could, passed my exams and concentrated on microeconomics instead. (Those confused should recall P.J. O'Rourke's explanation of the difference between the two: microeconomics concerns things that economists are specifically wrong about, while macroeconomics concerns things that they are wrong about generally.)
我坦白：念本科时，我的宏观manbetx20客户端下载 学成绩一直不太好，研究生阶段的学习对我更是一种挑战。我的授课教师们把manbetx20客户端下载 描述为一个跨期优化问题，在该问题中，某一个具有代表性的家庭决定消费多少和储蓄多少。掌握各种运算（它们很难）让我费了很大劲，这门学科的整体概念也几乎同样令我费解——它似乎忽略了宏观manbetx20客户端下载 学最有意思的地方。我做了力所能及的努力，通过了考试，然后转而重点研究微观manbetx20客户端下载 学。（感到困惑的读者应该回忆一下P•J•欧鲁克(P•J•O'Rourke)对二者不同之处的解释：微观manbetx20客户端下载 学关注manbetx20客户端下载 学家所犯的具体错误，宏观manbetx20客户端下载 学则关注他们所犯的一般性错误。）