ECON 159 - Lecture 5 - Nash Equilibrium: Bad Fashion and Bank Runs

Lecture 5 - Nash Equilibrium: Bad Fashion and Bank Runs


We first define formally the new concept from last time: Nash equilibrium. Then we discuss why we might be interested in Nash equilibrium and how we might find Nash equilibrium in various games. As an example, we play a class investment game to illustrate that there can be many equilibria in social settings, and that societies can fail to coordinate at all or may coordinate on a bad equilibrium. We argue that coordination problems are common in the real world. Finally, we discuss why in such coordination problems--unlike in prisoners' dilemmas--simply communicating may be a remedy.



Strategies and Games: Theory And Practice. (Dutta): Chapter 5

Strategy: An Introduction to Game Theory. (Watson): Chapters 6-9

Thinking Strategically. (Dixit and Nalebuff): Chapter 3, Sections 4-6

Problem Set 2

Course Media





Low Bandwidth Video

mov [100MB]

High Bandwidth Video

mov [500MB]