Introduction 1

Introduction to Economics

What is Economics?

Economics is the study of how individuals and societies allocate limited resources to satisfy unlimited wants. This foundational concept introduces students to the central problem of scarcity and the necessity of making choices.

• Definition: Economics examines how people use their limited resources to fulfill their unlimited desires.

• Key Question: What would you like to have? This question highlights the concept of wants and the reality of constraints.

• Example: Students may desire good grades, sleep, money, and social activities, but cannot have everything due to limited time and resources.

Scarcity and Choice

Scarcity is the fundamental economic problem arising because resources are limited while human wants are virtually infinite. This leads to the necessity of making choices about how to allocate resources.

• Unlimited Desires: People always want more—goods, services, experiences, and achievements.

• Limited Resources: Resources such as time, money, and materials are finite.

• Implication: You cannot afford to buy everything you want or do everything you wish; choices must be made.

• Example: A student wants to excel academically, socialize, work out, earn money, and learn new hobbies, but only has a few months in the semester—time is a limited resource.

Key Economic Concepts

Several foundational concepts arise from the problem of scarcity and choice:

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

• Resource Allocation: The process of deciding how to distribute scarce resources among competing uses.

• Trade-offs: Because resources are limited, choosing one option means giving up another.

Application: Everyday Choices

Economics is not just about money or markets; it applies to everyday decisions. For example, deciding how to spend your time during a semester involves weighing various activities against the limited time available.

• Example: Balancing school, social life, family, work, and personal interests.

• Time as a Resource: Time is a non-renewable resource, and its allocation reflects economic decision-making.

Summary Table: Scarcity and Choice

Concept	Description	Example
Scarcity	Limited resources vs. unlimited wants	Only a few months in a semester to accomplish many goals
Choice	Deciding among alternatives	Choosing to study instead of going out
Opportunity Cost	Value of the next best alternative forgone	Missing a party to prepare for an exam

Key Formula

While introductory economics does not require complex formulas, the concept of opportunity cost can be expressed as:

$\text{Opportunity Cost} = \text{Value of Next Best Alternative}$

Additional info: These notes expand on the introductory slides by providing definitions, examples, and a summary table to clarify the foundational concepts of scarcity, choice, and opportunity cost in economics.