Economics

2.1 Nature of Economics

• Economics is the social science examining decision-making on allocating scarce resources to satisfy human wants under constraints.

• It predicts human behavior and explains choices made under conditions of scarcity.

• Individuals and firms must choose how to allocate limited resources to meet their unlimited wants.

2.2 Classification of Economics

• Microeconomics: Focuses on individual and firm behavior, consumption, and production decisions.

• Macroeconomics: Looks at the economy as a whole, making broad economic predictions and examining how decisions affect individuals and firms.

3. Key Concepts in Economics

3.1 Wants and Scarcity

• Wants: Unlimited desires people have, but resources to fulfill them are limited.

• Scarcity: Occurs when resources are insufficient to meet all wants.

• Example: Fresh drinking water is scarce despite the abundance of sea water.

3.2 Choices and Opportunity Cost

• Scarcity forces individuals to make choices about which wants to satisfy.

• Opportunity Cost: The value of the next best alternative forgone when making a choice.

  • Example: If Aaron prefers to buy a smartphone over a digital camera, the opportunity cost is the digital camera he is not buying.

3.3 Relationship Between Scarcity and Competition

• Scarcity leads to competition among individuals for limited resources.

• This competition can be price-based (e.g., auctioning land) or non-price-based (e.g., first-come, first-served).

4. Circular Flow of Economic Activities

• Describes how money and goods flow through an economy:

  • Production: Converting factors into goods/services.

  • Consumption: Using goods/services to satisfy wants.

  • Exchange: Buying and selling of goods/services in markets.

• Product Market: Where final goods/services are exchanged.

• Factor Market: Where factors of production are exchanged.

5. Positive vs. Normative Statements

• Positive Statements: Descriptive and factual, can be tested and confirmed (e.g., "Imposing sales tax increases revenue").

• Normative Statements: Involve value judgments, cannot be tested (e.g., "Sales tax should be imposed to increase revenue").

6. Free Goods vs. Economic Goods

• Free Goods: Abundant, require no payment (e.g., air).

• Economic Goods: Limited in availability and require payment (e.g., food).

• Bads: Unwanted goods that people avoid (e.g., pollution).

7. Importance of Private Property Rights

• Foundation for market economies; they provide the right to use, receive income, and transfer ownership of property.

• Secure property rights enable market transactions and facilitate competition.