In This Piece

I remember sitting in a packed auditorium a few years ago, listening to two economists nearly come to blows. One insisted that technology would always save us, that we could keep growing forever. The other pointed to the melting ice caps and said, “Physics doesn’t negotiate.” That debate—is infinite economic growth possible?—has stuck with me. It’s not just some academic puzzle; it shapes how we invest, where we work, and what kind of planet we leave behind.

The Two Camps: Optimists vs. Skeptics

Broadly, you’ll find two groups: the techno-optimists and the limits-to-growth crowd. Optimists point to the last 200 years. Since the Industrial Revolution, global GDP has exploded—from a few hundred billion dollars in today’s terms to over $100 trillion. And we keep inventing: renewable energy, vertical farming, AI that optimizes supply chains. Their mantra: human ingenuity will find a way.

My take: I’ve seen too many green tech startups fail because they ignored basic thermodynamics. Yes, solar panels are cheaper, but they require rare earth minerals. You can’t recycle everything perfectly. Optimism is great, but it’s not a plan.

Skeptics, led by ecologists like Herman Daly, argue that infinite growth on a finite planet is a logical impossibility. Every physical product—from a smartphone to a skyscraper—needs materials and energy. Even services rely on physical infrastructure: servers, buildings, transportation. They point to the Limits to Growth 1972 report, which modeled a collapse by the mid-21st century if we didn’t change. Spoiler: we didn’t change much.

Where the Data Stands

Let’s look at resource use. Since 1970, global material extraction has tripled—from 27 billion tonnes to 92 billion tonnes per year (UNEP, 2019). Energy use has doubled. And despite efficiency gains, absolute consumption keeps rising. The optimists say “we’ll dematerialize the economy,” but the numbers show otherwise. Check the Global Footprint Network—Earth Overshoot Day keeps arriving earlier each year.

What History Tells Us About Growth

I’ve dug into historical growth patterns for different civilizations. The Roman Empire grew for centuries, then crumbled partly due to resource strain—deforestation in Italy, lead poisoning. China grew at 10% per year for decades, but now faces polluted rivers and an aging workforce. The pattern? Growth accelerates, then hits a wall.

But modern economies are different, right? Maybe. We’ve gotten good at shifting problems. Rich countries de-industrialize and import goods from poorer ones—exporting pollution. That’s not solving the overall limit; it’s just moving it geographically.

The Jevons Paradox Trap

Here’s a nuance most people miss: when we become more efficient with a resource, we often use more of it, not less. It’s called Jevons Paradox. For example, fuel-efficient cars made driving cheaper, so people drove more—net gasoline consumption went up. So even if technology improves, total resource use can keep climbing.

Part of the problem is how we measure growth. GDP counts everything: building a hospital adds to GDP, but so does cleaning up an oil spill. It doesn’t subtract environmental damage. I’ve worked with sustainable development indices, and the gap between GDP and genuine progress is widening. Check the Genuine Progress Indicator—in some countries, GPI has stagnated while GDP soared.

MetricWhat It IncludesWhat It Misses
GDPAll market transactionsResource depletion, pollution, unpaid work
Genuine Progress IndicatorGDP adjusted for inequality, environmental costsStill not perfect but better
Happy Planet IndexWell-being per unit of ecological footprintLess used by policymakers

If we keep optimizing for GDP, we’ll chase endless material growth that degrades life quality. Bhutan’s Gross National Happiness index is interesting, but it’s hard to scale.

Can We Decouple Growth from Resource Use?

The holy grail for optimists is absolute decoupling: GDP goes up while resource use and emissions go down. Has it happened? In some rich countries, carbon emissions have flatlined or slightly dropped while GDP grew. The UK, for example, reduced CO2 by 44% since 1990 while GDP doubled. Sounds great, but dig deeper: much of that reduction came from outsourcing manufacturing to China. On a global scale, emissions are still rising. And material footprint per person in the UK is actually increasing when you account for imports.

I visited a “circular economy” factory in the Netherlands that claimed 100% recycling of plastic. Inside, I saw that only 30% was recycled back into high-grade product; the rest was downcycled or burned. Circularity is a myth in most industries. Check the Ellen MacArthur Foundation reports—even best-case scenarios show circularity only handles 50% of resource needs.

A Realistic Scenario

Imagine we shift to 100% renewable energy. That requires mining for lithium, cobalt, rare earths. The energy to mine and process those minerals comes from... fossil fuels today. It’s a transition, not a magic fix. The IEA projects that by 2040, mineral demand for clean energy will quadruple. So we’ll still be extracting more stuff.

What It Means for Your Money and Future

I manage a small fund that invests in sustainable assets. Clients often ask: should I bet on infinite growth stocks like tech, or hedge with commodities? My answer: neither extreme. I believe infinite quantitative growth (more stuff) is impossible, but qualitative growth (better stuff) is not. We can grow in health, education, art, relationships—things that don’t consume physical resources. But our current system isn’t set up to measure that.

Practical advice: Diversify into companies that explicitly decouple profit from resource throughput—software, services, brands with strong circular models. Avoid sectors that rely on virgin material extraction without a plan. And personally, vote for policies that put a price on carbon and resource use. That’s the only way to align growth with reality.

I’ve also changed my own lifestyle. Not out of guilt, but out of logic. I buy fewer things, invest in experiences, and support local repair shops. It’s not going to save the planet alone, but it’s consistent with the direction we need.

Fact-checked against UNEP’s Global Material Flows Database and the IPCC reports.

Frequently Asked Questions

As an investor, how do I prepare for the limits to growth?
Don’t panic and sell everything. Instead, look for companies that thrive in a resource-constrained world: renewable energy producers, recycling tech firms, digital platforms that replace physical goods. Avoid firms with huge resource footprints that can’t reduce them. Also consider holding some inflation-protected assets like land or infrastructure that will be essential during transitions.
Can infinite economic growth happen if we switch to a fully digital economy?
Only partially. Digital services still require data centers (which use huge energy and water), servers made from minerals, and devices that need periodic replacement. The cloud is physical. A fully digital economy reduces some resource use but doesn’t eliminate it. And the rebound effect often increases overall consumption.
What’s the biggest mistake people make when discussing this topic?
Assuming that history guarantees future growth. Most people look at the last 70 years and think it’s normal. It’s not. That period was fueled by cheap fossil energy and a relatively empty planet. We’re now in a full world with rising costs for resources and waste. Linear extrapolation is dangerous.