IMF. How to Promote the Wealth of Nations
Published on March 9, 2026, in Finance & Development, this essay by Michael Spence — Nobel laureate in Economics and Senior Fellow at the Hoover Institution — marks the 250th anniversary of Adam Smith’s The Wealth of Nations. Rather than offering a historical retrospective, Spence uses Smith’s ideas to examine how modern economies grow, trade, and respond to disruption. Smith explained the structural foundations of modern economies. Although he is best known for the “invisible hand,” Spence argues that Smith’s more important insight was the division of labor. In other words, increasing income and prosperity require movement beyond a static subsistence economy.
Specialization, Trade, and the Size of Markets
At the center of Spence’s argument is Smith’s claim that specialization drives productivity. However, this process depends on two essential conditions. The first is trade, since specialized production requires exchange. Demand is not specialized in the same way. Therefore, a market system based on prices and currencies becomes necessary.
The second condition is a sufficiently large market. Without enough demand to absorb specialized production, firms must reduce specialization. In addition, in high-tech industries, the return on investment depends on the size and scope of the market for innovation. Taken together, specialization, trade, and market size reinforce one another and support higher productivity and incomes.
Technology as a Catalyst for Development
Spence then links Smith’s framework to technological change. Technology has repeatedly driven productivity growth. At the same time, it has expanded specialization through greater connectivity. As a result, the addressable market has also grown.
These dynamics are especially important for developing economies. In early stages of development, income levels are low and domestic demand is limited. Consequently, specialization remains constrained. However, when countries can access the global economy, this domestic demand limit weakens, at least for tradable goods and services. Moreover, Spence notes that postwar specialization contributed to unprecedented growth and, over the last three decades, to the largest reduction in extreme poverty in human history.
Risk, Complexity, and the Limits of Specialization
Despite its benefits, specialization also creates risks. A highly specialized economy becomes more vulnerable when the trading system is disrupted. For this reason, perceived threats to openness, market functioning, and access can sharply limit specialization. Furthermore, complexity creates another source of fragility. Hidden risks often emerge within dense systems of interconnection that are difficult to observe fully.
Spence suggests that artificial intelligence may help manage these systems, including global supply chains and smart grids. Ultimately, he argues that the way societies respond to disruption and complexity will shape both individual well-being and the wealth of nations in the years ahead.
Reference
Spence, M. (2026, March 9). How to promote the wealth of nations. Finance & Development, IMF. https://www.imf.org/en/publications/fandd/issues/series/analytical-series/how-to-promote-the-wealth-of-nations-spence