Involves

Moment

Two goods, four labor requirements

London, 1817; David Ricardo publishes his cloth-and-wine example

In his chapter on foreign trade, Ricardo described England and Portugal producing cloth and wine. His hypothetical Portugal needed less labor for either good. Yet Portugal could still benefit by focusing on wine and exchanging it for English cloth. Its stronger advantage in wine made the cloth it could obtain through exchange attractive.

Book
Principles of Political Economy and Taxation
Year
1817
Goods
Cloth and wine

The caveat

Ricardo's figures were an analytical example, not a statistical survey of the two countries. The passage also made assumptions about production and the movement of capital. It demonstrates a mechanism whose application requires examining actual constraints.

The example broke an intuitive rule: buy from others only when they can make something more efficiently than you. Ricardo instead compared how much of one product had to be sacrificed for the other within each country. The possibility of mutual gain arose from those different ratios.

How it connects

Ricardo made the counterintuitive result visible with cloth and wine.

This moment appeared in Why the best should still trade, the Involves connection for September 20, 2026, which asked: Can someone who does everything better still benefit from a partner?

Check yourself

What made Ricardo's example surprising?

Portugal could gain from trade despite requiring less labor for both goods. Exactly. The argument depends on different relative costs, even when one country is absolutely more productive.

What the sources establish

  • Ricardo's hypothetical Portugal used less labor in both activities but benefited from specializing in wine and importing cloth.

Sources