The origin story of GDP begins with the meaning of economy as “governing the world and making the people prosperous.” Yet this immediately raises a fundamental question: by what method can the wealth of the people actually be measured?
Gold as the First Answer
When people seriously considered how to measure national wealth, the first answer that emerged was gold. The reasoning was simple: a country with more gold must be a richer country.
Gold as a Symbol of Wealth
Gold bars were seen as the embodiment of material prosperity. A nation that possessed large quantities of gold was naturally regarded as wealthy.
The Desert Thought Experiment
However, gold has a decisive weakness. Imagine being dropped into the African desert. No matter how much gold you carry, it is useless. What truly matters there is water, food, and protection from the sun.
The Limitation of Gold
If gold cannot ensure survival or daily comfort, it cannot fully define a rich nation. This realization exposed the weakness of measuring wealth by gold reserves alone.
The Illusion of Money
If gold could not define wealth, perhaps money could. The idea followed that a country with more money in circulation must be richer. But this view also contained a serious flaw.
Printing Money Does Not Create Wealth
If having more money meant being wealthier, a nation could simply gather paper and print unlimited currency. Wealth would then be easy to manufacture.
When Money Becomes Just Paper
Yet as more and more money is printed, its value declines. Eventually, it becomes nothing more than paper, losing its purchasing power.
The Problem with Money as a Standard
For this reason, defining a rich nation as one with a large money supply is unreasonable. Money by itself does not represent real material prosperity.
The Shift Toward Real Goods and Services
If neither gold nor money defines a rich country, what does? At this turning point, an important insight emerged from Adam Smith regarding the nature of material wealth.
Adam Smith’s Insight on Material Wealth
Adam Smith argued that wealth does not consist of gold or money, but of the goods and services people actually consume—what they eat, drink, and enjoy in daily life.
Abundance as the True Sign of Prosperity
A truly rich nation is one where food and drink are plentiful, and where goods that enhance daily life—such as mobile phones, automobiles, and comfortable houses—are widely available.
A Revolutionary but Simple Idea
Although this idea seems obvious today, it was revolutionary at the time. It shifted the focus of wealth from stored assets to real production and consumption, laying the intellectual foundation for what would later become GDP.
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