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Thinking Like An Economist. Economics: Studying Choice In a World of Scarcity. The Scarcity Principle Boundless wants cannot be satisfied with limited resources. Therefore, having more of one thing usually means having less of another. Because of scarcity we must make choices. Scarcity.

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Thinking Like An Economist

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Thinking like an economist

Thinking LikeAn Economist


Economics studying choice in a world of scarcity

Economics: StudyingChoice In a World of Scarcity

  • The Scarcity Principle

    • Boundless wants cannot be satisfied with limited resources.

    • Therefore, having more of one thing usually means having less of another.

    • Because of scarcity we must make choices.

Chapter 1: Thinking Like an Economist


Economics studying choice in a world of scarcity1

Scarcity

Choices

Economics: StudyingChoice In a World of Scarcity

Wants vs. Resources

Chapter 1: Thinking Like an Economist


Economics studying choice in a world of scarcity2

Economics: StudyingChoice In a World of Scarcity

  • Economics

    • The study of how people make choices under conditions of scarcity and of the results of those choices for society.

Chapter 1: Thinking Like an Economist


Economics studying choice in a world of scarcity3

Economics: StudyingChoice In a World of Scarcity

  • The Cost-Benefit Principle

    • An individual (or a firm or a society) should take an action if, and only if, the extra benefits from taking the action are at least as great as the extra costs

Chapter 1: Thinking Like an Economist


Applying the cost benefit principle

Applying The Cost-Benefit Principle

  • Should you go downtown to save $10 on a $25 computer game?

    • The benefit of going downtown = $10

Chapter 1: Thinking Like an Economist


Applying the cost benefit principle1

Applying The Cost-Benefit Principle

  • Should you go downtown to save $10 on a $25 computer game?

    • Estimating the cost:

      If you would go downtown for $9; the trip’s cost is $9

    • The benefit ($10) exceeds the cost of ($9) of buying the game downtown

Chapter 1: Thinking Like an Economist


Applying the cost benefit principle2

Applying The Cost-Benefit Principle

  • Economic Surplus

    • The benefit of taking any action minus its cost

    • The goal of economic decision makers is to maximize their economic surplus

Chapter 1: Thinking Like an Economist


Applying the cost benefit principle3

Applying The Cost-Benefit Principle

  • Opportunity Cost

    • The value of the next-best alternative that must be forgone to undertake an activity

Chapter 1: Thinking Like an Economist


Applying the cost benefit principle4

Applying The Cost-Benefit Principle

  • Question

    • What is the opportunity cost of buying the game downtown?

Chapter 1: Thinking Like an Economist


Applying the cost benefit principle5

Applying The Cost-Benefit Principle

  • Assume

    • The benefit of buying the game downtown is $10

    • The cost of making the trip is $12

  • Questions

    • What is your economic surplus from buying the game downtown?

    • Where should you buy the game?

Chapter 1: Thinking Like an Economist


Applying the cost benefit principle6

Applying The Cost-Benefit Principle

  • Observation

    • The cost-benefit principle suggests that we take only those actions that create additional economic surplus.

Chapter 1: Thinking Like an Economist


Economics micro and macro

Economics: Micro and Macro

  • Microeconomics

    • The study of individual choice under scarcity and its implications for the behavior of prices and quantities in individual markets

Chapter 1: Thinking Like an Economist


Economics micro and macro1

Economics: Micro and Macro

  • Macroeconomics

    • The study of the performance of national economies, and of the policies that governments use to try to improve that performance

Chapter 1: Thinking Like an Economist


The approach of this course

The Approach of This Course

  • Focus on core macro economic concepts

  • Scarcity principle

  • Cost-benefit principle

  • Learning economics through applications

Chapter 1: Thinking Like an Economist


Economic naturalism

Economic Naturalism

  • Using insights from economics to help make sense of observations from everyday life

Chapter 1: Thinking Like an Economist


Thinking like an economist

End of

Chapter


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