Table of Contents

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economic.wiki

An illustrated guide to how the world works

Supply Demand Equilibrium ¢
II

Supply & Demand

The fundamental forces that shape every market. When two currents converge, a price is born at their intersection — the equilibrium where buyers and sellers agree.

Supply represents the willingness of producers to offer goods at various prices. Demand captures the desire of consumers to purchase. Where these rivers meet, the market finds its balance.

The invisible hand guides these forces toward equilibrium, though real markets often overshoot and correct.

Equilibrium Price P* = f(Qs, Qd)
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III

Markets

A market is any arena where buyers and sellers come together. From ancient bazaars to digital exchanges, the fundamental mechanics remain: goods are displayed, prices are set, and trades occur.

Competition between sellers drives innovation and efficiency. The marketplace is where individual decisions aggregate into collective outcomes that no single participant intended.

Adam Smith observed that the butcher, brewer, and baker serve our dinner not from benevolence, but from self-interest.

Market Types Perfect | Monopoly | Oligopoly
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IV

Policy

Economic policy is the art of balancing competing priorities. Every government decision — taxation, spending, regulation — tips the scales between growth and stability, between individual liberty and collective welfare.

The great debate of economics: how much weight to place on each side of the scale. Too much intervention stifles innovation; too little invites instability and inequality.

Keynes argued for active fiscal policy during downturns. Friedman countered that monetary policy alone could steer the economy.

Fiscal Levers G ↑ | T ↓ | M × k