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Economics from First Principles

Rebuilding economic intuition from the ground up.

32 posts · Money & Business

  1. 1

    What Economics Is and Why It Exists

    Let's begin with a surprise. Economics is not really about money. Money is just one tool it studies.
  2. 2

    How Economists Think: Incentives, Margins, and Models

    Economics is less a list of facts than a way of thinking . Once you learn the moves, you can apply them to almost anything: why your gym membership goes…
  3. 3

    Supply, Demand, and How Prices Are Determined

    Every day, without anyone in charge, millions of prices get set. Nobody decides that a cup of coffee should cost what it costs.
  4. 4

    Markets, Competition, and When Markets Fail

    A market is simply any arrangement where buyers and sellers meet to trade. But not all markets behave the same way.
  5. 5

    Consumer Behavior and How People Really Decide

    Every economy runs on billions of small choices: buy the cheaper rice or splurge on meat, the store-brand or the name-brand, the matinee or the evening show.
  6. 6

    What Money Is and Why It Has Value

    Pull a banknote out of your wallet and look at it. It is a slip of paper or plastic. You cannot eat it, wear it, or build a house with it.
  7. 7

    How Banks Work and How They Create Money

    Most people think a bank is a safe box. You put your money in, it sits there, and the bank lends "some of it" to other people.
  8. 8

    Central Banks and Monetary Policy

    Imagine one knob that can speed up or slow down an entire economy — making it easier or harder for millions of people and businesses to borrow money.
  9. 9

    Loans, Credit, Debt, and Interest Rates

    Long before coins existed, people were already lending — and already charging interest. In ancient Sumer and Babylon , around 3000 BCE, a farmer might borrow a…
  10. 10

    Inflation, Deflation, and the Value of Money

    Ask your grandparents what a cup of coffee cost when they were young. The number will sound absurdly small. The coffee did not get better. The money got weaker.
  11. 11

    Measuring an Economy: GDP, GNP, CPI, PPP and Key Indicators

    Imagine trying to manage a business without ever looking at the numbers — no idea of sales, costs, or profit. You would be flying blind.
  12. 12

    Economic Growth and Productivity

    If you want to understand why some countries are rich and others are poor, why your grandparents lived very differently from you, and why a tiny number can…
  13. 13

    Wages, Labor Markets, and Why Some Jobs Pay More

    Why does a heart surgeon earn ten times what a daycare worker earns, even though both do vital, demanding work?
  14. 14

    Unemployment, Productivity, and the Labor Force

    Every month, news outlets report a single number — "unemployment is 4.3%" — and markets, voters, and central bankers react.
  15. 15

    The Business Cycle: Booms, Recessions, and Depressions

    The economy does not grow in a smooth, straight line. It surges, slows, stumbles, and recovers — over and over.
  16. 16

    Fiscal Policy: Taxes, Spending, Deficits, and National Debt

    Fiscal policy is the government's use of two big levers — how much it taxes and how much it spends — to fund itself and to steer the whole economy.
  17. 17

    Business Economics: Costs, Profit, Competition, and Pricing

    Every business is, underneath, a simple machine: it spends money to make something, then sells it for more than it spent. The gap is profit.
  18. 18

    How Companies Grow, Raise Capital, and Create Value

    Every company, from a corner bakery to a trillion-dollar tech giant, is trying to do two things at once: make something people want, and keep a slice of the…
  19. 19

    Financial Markets: Stocks, Bonds, Commodities, and Derivatives

    Every economy has a problem to solve: some people have spare money they want to grow, and some people (companies, governments) need money to build things.
  20. 20

    Real Estate and Housing Economics

    Housing is the economic good almost everyone touches and almost nobody fully understands. For most families it is the largest thing they will ever buy and the…
  21. 21

    International Trade: Imports, Exports, Tariffs, and Agreements

    Look around the room you're in. The phone, the coffee, the cotton in your shirt, the chips inside your laptop — they almost certainly came from many different…
  22. 22

    Exchange Rates, Currency Markets, and Why Currencies Rise or Fall

    Every country has its own money. The moment a German buys a phone from Japan, or an Indian software firm sells to a US client, two different monies must meet…
  23. 23

    Globalization and How National Economies Are Connected

    Look at the back of almost anything you own. A phone "designed in California," "assembled in China," running on chips made in Taiwan, with memory from South…
  24. 24

    Financial Crises: Why They Happen, Spread, and How Economies Recover

    Every few decades, the financial system seems to come apart all at once. Banks fail, markets crash, lending freezes, and millions lose jobs.
  25. 25

    Inequality, Wealth Distribution, and Poverty

    Every society has rich people and poor people. The interesting questions are: How big is the gap? Why does it exist? Is it growing?
  26. 26

    Development Economics: Why Some Countries Are Rich and Others Poor

    Here is one of the biggest questions a thinking person can ask. Why is a baby born in Singapore likely to live a long, comfortable life with good schools and…
  27. 27

    Technology, Automation, AI, and Innovation

    Here is the single most important fact in all of long-run economics. For almost all of human history, the typical person lived on roughly the same income as…
  28. 28

    Population, Demographics, and the Economy

    Every economy is, at bottom, a crowd of people who work, save, spend, and grow old. So the size and age-mix of that crowd shapes almost everything: how fast…
  29. 29

    Public Economics: Welfare, Social Security, and the Role of Government

    So far we have mostly watched markets do their work. Buyers and sellers meet, prices move, and resources flow to where they are valued most.
  30. 30

    Environmental Economics and Sustainable Development

    Every economy runs on a planet. We pull resources out of it, and we push waste back into it. For most of history, economics treated nature as a free, infinite…
  31. 31

    Behavioral Economics: How Psychology Shapes the Economy

    For most of its history, economics quietly assumed that people are coldly rational. It pictured an imaginary creature economists nicknamed homo economicus —…
  32. 32

    How It All Connects: Ripple Effects and the Whole System

    You have now met the pieces of the economy one at a time: prices, money, banks, trade, inflation, central banks, markets.