Verbal Bellringer

• What are 2 ways we learned yesterday that economists view the world differently?

Greg Mankiw’s Economic Assumptions

1. People Face Tradeoffs. 2. The Cost of Something is What You Give Up to Get It. 3. Rational People Think at the Margin.4. People Respond to Incentives.5. Trade Can Make Everyone Better Off.6. Markets Are Usually a Good Way to Organize Economic Activity.7. Governments Can Sometimes Improve Market Outcomes.8. A Country's Standard of Living Depends on Its Ability to Produce Goods and Services.9. Prices Rise When the Government Prints Too Much Money.10. Society Faces a Short-Run Tradeoff Between Inflation and Unemployment.

#1 People Face Tradeoffs

• Choices• Can’t do everything

• Limits on life?

• Examples?

#2. The Cost of Something is What You Give Up to Get It.

• Opportunity Cost• Next best option• Next best trade off• Other examples?

3. Rational People Think at the Margin

• Cost benefit analysis• Video clip• Benefits?• Costs?• Other examples?

http://www.yadayadayadaecon.com/clip/7/

Think of examples where we could use marginal analysis

• Direct mailing ads• Doctor visits• Drinking a cup of coffee• Exercise• 25 min lunch• Longer school year• 4 college classes vs. 5 classes• Studying 1 hour vs. 2 hours• Other marginal examples

Worksheet on marginal