Harvard Econ PhD First-year Core
ECON 2010A Economic Theory I (Fall 2019)
Lecture 1 (first half) - Introduction

這是Harvard Econ PhD的Micro I第一節課頭40分鐘對經濟學的Introduction，也是基本絕大多數Micro I課會忽略的內容。

But i find it particularly useful to know all these before the rigor of MWG starts to drive you mad.