ECON 201: Principles of Microeconomics
Lecture 2
This plot shows GDP per capita, a proxy for living standards, for five countries over the last millennium.
When do living standards start to rise? Estimate a year per country (worksheet, Activity 1), then compare with a neighbor.
GDP is a country’s output: everything it produces in a year, valued at market prices. That total is also everyone’s total income.
“It adds up everything from nails to toothbrushes, tractors, shoes, haircuts, management consultancy, street cleaning, yoga teaching, plates, bandages, books, and the millions of other services and products in the economy.” Diane Coyle, economist
Larger countries will have higher GDP simply because they have more people, so divide by population to get GDP per capita.

His most famous idea, the invisible hand: markets coordinate the decisions of millions of strangers with no one planning it.
“It is not from the benevolence of the butcher, the brewer, or the baker, that we expect our dinner, but from their regard to their own interest.”
How did a world in which living conditions barely changed become one of continuous technological revolution, with each generation better off than the last?
A big part of the answer is the capitalist revolution: the emergence in the eighteenth century of a new way of organizing the economy that we now call capitalism. It raised what one worker could produce in two ways.

Share of New York Times articles that mention “capitalism”, 1851 to 2015. Source: CORE Figure 1.13.
In everyday speech “capitalism” can mean many different things. Here we define it formally as
Capitalism is an economic system characterized by a particular combination of institutions: private property, markets, and firms
Worksheet, Activity 2: pair up and work through both questions.
Most countries today are capitalist. Why has sustained growth reached some and not others? Two parts of the answer:
World carbon dioxide emissions from fossil fuels and industry, 1750 to 2024.
Economics is the study of how people interact with each other and with their natural environment in producing and acquiring their livelihoods, and how this changes over time and differs across societies.
ECON 201 · Lecture 2