The Problem with Averages: Is GDP Really a Measure of Prosperity?

Every few months, we hear a familiar headline about India.

India has become one of the world's largest economies. India has overtaken another major economy. India is closing in on becoming the world's third-largest economy.

These are real achievements. They deserve recognition.

But one question keeps getting lost between the headline and the celebration:

What does the size of an economy actually tell us about the prosperity of the people living inside it? This is where the problem of averages comes in.

The Room Where Bill Gates Walks In

Nassim Nicholas Taleb illustrated this with a simple thought experiment. Picture five ordinary people sitting in a room. Bill Gates walks in. The average wealth of everyone present shoots up instantly. Did anyone else's bank balance change? Not by a rupee.

The average moved. Their lives did not.

Illustration of Problem of Average based on Nassim Nicholas Taleb's example

That is the core limitation of most economic statistics: an average can be mathematically flawless and still describe almost nobody's actual life. This is exactly why GDP, GDP per capita, and prosperity are not interchangeable words even though headlines routinely treat them as one and the same.

The Size of an Economy Is Not the Same as the Wealth of Its People

GDP measures the total value of goods and services produced within an economy in a year. It is a measure of scale and activity, and in that sense it is genuinely useful. If India's GDP is larger than Brazil's, India's economic output is larger, full stop.

But India's population is also more than six times the size of Brazil's. Divide GDP by population, and the picture changes completely.

Take the five original BRICS economies;

Brazil, Russia, India, China, and South Africa, using 2025 estimates from the IMF's April 2026 World Economic Outlook, the latest available.

By total GDP, the order looks like this:

China → India → Russia → Brazil → South Africa.

India sits comfortably in second place. It looks like a straightforward success story.

Now divide each economy by its population.

By GDP per capita, the order flips almost entirely:

Russia → China → Brazil → South Africa → India.

The country that ranked second by total size now ranks last.

GPD and GDP Per Capita for the BRICS nations

Both numbers are correct. There is no contradiction, they are simply answering two different questions. Total GDP asks how large is the economy? GDP per capita asks how much economic output is associated, on average, with each person? Neither one asks the question that actually matters to most people: how well is the typical person living?

The Average Is Not the Typical Person

Inequality makes this gap even wider. Suppose five people earn ₹10,000, ₹10,000, ₹10,000, ₹10,000, and ₹10 crore a month. The average income across the group is extremely high but four of the five people still earn ₹10,000. The average is correct. As a description of the "typical" person in that room, it is close to meaningless.

This is why the median is often more informative than the mean. Line everyone up from poorest to richest, and the median is whoever stands in the middle, a figure that barely moves when one outlier joins the room. The same logic applies to countries: GDP per capita is a mean, not a distribution. A country can post a respectable GDP per capita while a large share of its population remains economically vulnerable. The real question is never just how much wealth exists, it is who has access to it.

What the Rest of the BRICS Comparison Shows

Line the same five countries up on other measures, and the story keeps shifting.

Russia's total economy is smaller than India's, yet its GDP per capita is several times higher, because its population is a fraction of the size. Brazil's economy is a little over half of India's, yet its GDP per capita is nearly four times as large. China's economy is roughly five times India's and its GDP per capita is also roughly five times India's. South Africa's economy is a fraction of India's size, yet its GDP per capita is more than double.

Add one more lens: the UN's Human Development Index, which folds health and education in alongside income. On the latest HDR (2025 report, 2023 reference data), Russia sits in the "very high" development band, China, Brazil, and South Africa all sit in "high," and India is the only one of the five still in "medium" 130th out of 193 countries, versus 64th for Russia, 78th for China, 84th for Brazil, and 106th for South Africa.

UNDP HDI Data based on 2025 report comparing the five BRICS nations

There is no single number that settles which of these countries is "better off." National progress has more than one dimension, and each dimension tells a partial story and on this particular one, India's rank matches the pattern from GDP per capita rather than the pattern from total GDP.

GDP Is Not Wrong. It Is Incomplete.

It would be tempting to conclude from all this that GDP is a flawed or misleading measure. That is not the right lesson.

GDP is genuinely important. An economy needs productive businesses, infrastructure, exports, investment, and employment and growth creates the resources that can eventually be converted into better healthcare, education, and living standards. China is the clearest example of that relationship: its economic expansion over recent decades has come with dramatic gains in infrastructure, life expectancy, and education.

Economic growth matters. The mistake is not measuring GDP. The mistake is treating GDP as a complete measure of prosperity. GDP tells us about the scale and activity of an economy. It does not, by itself, tell us anything about the quality of life that activity produces.

A Dashboard, Not a Single Number

If we genuinely want to understand how a country is doing, we need something closer to an economic dashboard than a single headline figure.

GDP tells us about scale. GDP per capita tells us about average output per person. Purchasing Power Parity tells us what that output can actually buy in a given cost-of-living environment. Median income tells us about the position of the typical household. The Gini coefficient tells us about inequality. Employment and labour-force participation tell us whether people are actually part of the economy. Wealth distribution tells us who owns the assets. Poverty rates tell us how many people remain vulnerable. Life expectancy and education indicators tell us about health and human capital. And composite measures like the Human Development Index try to bring several of these threads together.

Each of these tells us something different. None of them tells us everything.

India's Real Challenge Isn't Becoming a Large Economy

This brings us back to India, which has nothing to be defensive about in celebrating its rise as one of the world's largest economies. A bigger economy means greater fiscal capacity, a larger domestic market, and more geopolitical weight. But the achievement should not become the end of the conversation.

India's population, more than 1.4 billion people, is one of its greatest economic strengths: a vast labour force, an enormous consumer market, and deep entrepreneurial potential. It is also the denominator in every per-person calculation. A $4 trillion economy divided among a relatively small population produces a very different outcome, per person, from a $4 trillion economy divided among more than a billion people.

India's real development challenge, then, is not simply to make the economic pie bigger. It is to make the pie bigger and grow the size of the slice that reaches the typical Indian and then make sure that slice actually translates into a better life: higher productivity, better jobs, higher wages, stronger human capital, better healthcare and education, and broader participation in growth.

The Question We Should Really Be Asking

Perhaps the more useful question isn't when will India become the world's third-largest economy, a legitimate question, but one that measures scale alone.

It's this: When will becoming one of the world's largest economies translate into a substantially better life for the median Indian?

Those two milestones can arrive decades apart. A nation can be economically enormous while millions of its citizens remain economically vulnerable. It can host world-class companies while millions struggle to find productive employment. It can have billionaires whose wealth pulls the average sharply upward while the median household's progress remains much slower. None of this diminishes India's economic achievements, it simply means growth and prosperity are related, not identical.

Taleb's Bill Gates example is bigger than a statistical curiosity. An average tells us what happens when we divide the whole by the number of people. It cannot, on its own, tell us what is actually happening to the people.

That may be the right way to watch India's economic journey too: celebrate the size of the economy, but keep asking the harder question, how is the median Indian doing? Because a nation's real strength lies not in the size of its economy, but in how well that economy improves the lives of the people who built it.

About the Author:

Dr SP Mishra is the Founder of India Career Centre, a Hyderabad-based career guidance, study-abroad consulting and educational research organisation. He writes and speaks on career decision-making, higher education, skills, employability and the future of work in India. Also hosts the India Career Centre Podcast. Connect on LinkedIn.