The Big Picture

ECON 201 — Lecture 2 Notes

1. GDP & GDP per Capita

GDP

GDP = total value of everything a country produces in a year.

It includes:

  • Goods

  • Services

GDP per capita

GDP ÷ population

Why?

A large country naturally has more total GDP because it has more people.

So GDP per capita is better for comparing average living standards between countries.

Easy example

Country A:

  • GDP = $1 trillion

  • Population = 100 million

GDP per capita = $10,000


2. The “Hockey Stick”

The hockey stick describes how living standards stayed relatively flat for centuries and then began rising rapidly, especially after around 1800.

Why?

➡ Major technological and economic changes.


3. Adam Smith

Adam Smith is often called the father of modern economics.

One of his major ideas:

Invisible Hand

Markets can coordinate the actions of millions of people without one person controlling everything.

Example:

You buy food because you want food.

The restaurant sells food because it wants money.

Both sides voluntarily trade because they benefit.


4. Division of Labor / Specialization

Division of labor = workers specialize in different tasks.

Example:

Instead of one person making an entire product:

  • Worker 1 → Step 1

  • Worker 2 → Step 2

  • Worker 3 → Step 3

  • etc.

Why does specialization help?

Workers become:

  • Faster

  • Better at their specific task

  • More productive

Adam Smith used a pin factory example where workers specializing in different steps could produce dramatically more pins than workers working individually.


5. Extent of the Market

Specialization only works well if there are enough customers to buy what is produced.

Think:

Bigger market → more specialization possible

Transportation and trade helped expand markets.

Example:

A factory doesn’t have to sell only to people in its town.

It can sell to:

  • Other cities

  • Other states

  • Other countries


6. Technology

In economics, technology doesn’t just mean phones or computers.

Technology = a process for turning inputs into outputs.

Example:

Cake recipe

Inputs:

  • Flour

  • Eggs

  • Sugar

  • Labor

  • Oven

Output:
➡ Cake


7. Technological Progress

Technological progress = producing the same amount of output using fewer resources.

Resources can include:

  • Labor

  • Machines

  • Land

  • Energy

  • Time

Simple example

Old technology:

10 workers → 100 products

New technology:

5 workers → 100 products

➡ Technological progress

The Industrial Revolution brought major technological changes in:

  • Textiles

  • Energy

  • Transportation

  • Manufacturing


8. Capitalism

The lecture defines capitalism as an economic system containing three major institutions:

1. Private property

People have the right to:

  • Use something

  • Benefit from it

  • Prevent others from using it

  • Exchange/sell it

2. Markets

People voluntarily exchange goods and services.

Buyers and sellers compete.

3. Firms

Businesses:

  • Own capital

  • Hire workers

  • Pay wages

  • Organize production

  • Sell products

  • Try to make profits

MEMORIZE:

Capitalism = Private Property + Markets + Firms


9. Why Did Capitalism Increase Productivity?

The lecture gives two major reasons:

1. Competition + technology

Firms have incentives to:

  • Develop new technology

  • Become more productive

  • Make profits

2. Specialization

Markets allow people and businesses to specialize on a much larger scale.

➡ More specialization → higher productivity.


10. Capitalism vs. Central Planning

The lecture discusses divided Germany after WWII.

  • West Germany → capitalist system

  • East Germany → centrally planned system

Their living standards were relatively similar before WWII, but later diverged. The lecture uses this as an example of a natural experiment for studying different economic systems.

Natural experiment

A natural experiment studies differences between groups when conditions differ for reasons outside the researcher’s control.


11. Correlation ≠ Causation

Very important.

If two things happen at the same time:

That doesn’t automatically mean one caused the other.

Example:

Capitalism spreads ↗
Living standards rise ↗

You cannot automatically conclude:

Capitalism caused the increase.

Something else could have affected both.


12. Institutions

Institutions = rules that organize society.

Examples:

  • Laws

  • Property rights

  • Government rules

  • Informal social rules

Good institutions can help markets and economies function.


13. Why Doesn’t Every Country Grow Equally?

The lecture discusses factors including:

Colonialism

Some countries experienced long periods of colonial rule that affected their economic development.

Institutions and politics

Countries differ in:

  • Property rights

  • Markets

  • Firms

  • Government

  • Infrastructure

  • Education

  • Rule of law

These differences can affect economic growth.


14. Economy & Environment

Economic growth has also been associated with increased environmental pressures.

The lecture compares two “hockey sticks”:

📈 GDP growth
📈 CO₂ emissions

Economic activity uses:

  • Energy

  • Materials

  • Land

  • Natural resources

And produces:

  • Waste

  • Emissions

  • Heat


🧠 SUPER SHORT CHEAT SHEET

GDP = total production

GDP per capita = GDP ÷ population

Hockey stick = living standards stayed flat → then rose rapidly

Adam Smith = invisible hand + specialization

Invisible hand = markets coordinate individual decisions

Specialization = people focus on specific tasks

Extent of market = size of the market limits specialization

Technology = process turning inputs → outputs

Technological progress = fewer resources needed for same output

Capitalism = Private Property + Markets + Firms

Institutions = rules of the game

Natural experiment = compares groups exposed to different conditions for external reasons

Correlation ≠ causation


✏ Practice Problems

1. GDP Per Capita

Country A has:

  • GDP = $2 trillion

  • Population = 200 million

What is GDP per capita?

A. $1,000
B. $5,000
C. $10,000
D. $20,000


2. GDP

Which would be included in GDP?

A. A used car sold between two individuals
B. A newly produced car sold to a consumer
C. Money transferred between family members
D. A person’s unpaid housework


3. Invisible Hand

Which best describes Adam Smith’s invisible hand?

A. Government controls all production
B. Markets coordinate individual decisions through voluntary exchange
C. Workers must perform identical tasks
D. Firms cannot compete


4. Specialization

Why can specialization increase productivity?

A. Workers perform many unrelated tasks
B. Workers become more skilled and efficient at specific tasks
C. Markets become smaller
D. Firms stop using technology


5. Extent of Market

Why can a larger market encourage greater specialization?

A. It provides more potential buyers for specialized products
B. It eliminates competition
C. It prevents trade
D. It reduces the number of customers


6. Technology

Which is the best example of technological progress?

A. Using 10 workers to produce 100 units instead of 5
B. Using 5 workers to produce the same 100 units that previously required 10
C. Producing fewer products with the same resources
D. Increasing the price of a product


7. Capitalism

Which combination represents the three institutions of capitalism?

A. Government, taxes, and money
B. Private property, markets, and firms
C. Labor, wages, and inflation
D. Banks, stocks, and bonds


8. Correlation vs. Causation

Suppose capitalism expands while living standards increase.

What can we conclude immediately?

A. Capitalism definitely caused the increase
B. Rising living standards definitely caused capitalism
C. The two are correlated, but correlation alone doesn’t establish causation
D. There is no relationship between them


9. Natural Experiment

Why is the division of Germany useful as a natural experiment?

A. The two regions experienced identical economic systems
B. The regions had similar histories but were subjected to different economic systems after WWII
C. Germany had no government
D. The regions had completely different populations


10. Institutions

Which is an example of an economic institution?

A. The weather
B. Property rights
C. A person’s favorite food
D. A mountain


🔥 Challenge Question

A country has:

GDP = $5 trillion
Population = 250 million

a. Calculate GDP per capita.

b. Another country has GDP of $10 trillion but a population of 1 billion.

Which country has the higher GDP per capita?

Don’t just look at total GDP — calculate it.


Answers

  1. C — $10,000

  2. B — A newly produced car

  3. B — Markets coordinate individual decisions

  4. B — Workers become more skilled/efficient

  5. A — More potential buyers

  6. B — Same output using fewer resources

  7. B — Private property + markets + firms

  8. C — Correlation doesn’t establish causation

  9. B — Similar histories, different economic systems

  10. B — Property rights

Challenge

Country 1:

$5 trillion ÷ 250 million = $20,000 per person

Country 2:

$10 trillion ÷ 1 billion = $10,000 per person

➡ Country 1 has the higher GDP per capita.

The lecture itself says Quiz 1 is based directly on the practice problems and guided reading, so these are the concepts I’d focus on first.