Guns, Germs, and Steel
March 16, 2026
7 min read
📚 arvy's Book Club
arvy's Teaser: This week's arvy's Weekly dissects the fertiliser crisis triggered by the Strait of Hormuz — urea up 29% in eleven days, food prices following. But why does a narrow waterway between Iran and Oman matter for bread prices in Cairo? Why did the Gulf become the world's nitrogen factory in the first place? The answer isn't politics. It's geography. Jared Diamond wrote the blueprint 27 years ago. A Pulitzer Prize winner that explains why the map always mattered more than the people on it — and what that means for investors.
The Book in 60 Seconds
Guns, Germs, and Steel (1997) by Jared Diamond asks the biggest question in human history: why did some civilisations conquer the world while others didn't? His answer: not because of racial or cultural superiority, but because of geography. The continents dealt different hands — different plants, different animals, different axes of orientation — and those starting conditions compounded over 13,000 years into vast inequalities in technology, military power, and disease resistance. Eurasia won the lottery of domesticable species, an east-west axis that allowed innovations to spread across similar climates, and proximity to livestock that bred deadly germs (and immunity to them). The book won the Pulitzer Prize and remains one of the most influential works of popular science ever written.
Jared Diamond · 1997 · Geography, History & Civilisation
German edition: Arm und Reich — Die Schicksale menschlicher Gesellschaften
Idea 1: Geography dealt the cards — culture just played them
The central thesis: the fate of civilisations was largely determined by the geographic and ecological conditions of the continents they happened to inhabit — not by any inherent superiority of one people over another.
Around 11,000 BC, every human society on Earth was a band of hunter-gatherers. By 1500 AD, some had steel warships and gunpowder while others still used stone tools. Diamond argues this divergence traces back to a single root cause: who had access to domesticable plants and animals.
| Region | Domesticable Species | Result |
|---|---|---|
| Fertile Crescent (Eurasia) | Wheat, barley, peas, lentils, sheep, goats, cattle, horses | Agriculture by ~8500 BC → cities, writing, empires |
| Americas | Corn (hard to domesticate), llamas (limited range), no large draft animals | Agriculture later, slower spread, fewer cities |
| Sub-Saharan Africa | Limited domesticable crops, large animals not domesticable (zebras, hippos, rhinos) | Agriculture imported, not locally developed at same pace |
| Australia | No domesticable plants or large animals | Hunter-gatherer societies until European arrival |
The Fertile Crescent had the largest number of domesticable wild grains and large mammals on the planet. Not because the people there were smarter — but because the biology happened to be there. Europeans who later arrived in Australia never domesticated a kangaroo or built a yam plantation either. They succeeded by importing European crops and livestock. The environment, not the people, was the variable.
The Investor Lesson
Resource endowments still determine economic fates. The Gulf states didn't become fertiliser giants because of superior innovation — they sit on cheap natural gas, the primary input for nitrogen production. When you read that 34–50% of all globally traded urea flows through the Strait of Hormuz, you're reading Diamond's thesis in real time. Geography first. Everything else second. (→ arvy's Weekly: Fertiliser Crisis)
Idea 2: The axis of the continent determined the speed of progress
One of Diamond's most elegant arguments: the orientation of a continent — east-west versus north-south — determined how quickly innovations could spread.
Eurasia stretches primarily east-west. This means that crops, animals, technologies, and ideas could diffuse across thousands of kilometres of similar climate. Wheat domesticated in Mesopotamia could grow in Egypt, India, and eventually Europe — all at roughly the same latitude, with similar day lengths and seasonal patterns.
The Americas and Africa, by contrast, stretch primarily north-south. A crop developed in Mexico had to cross deserts, tropical rainforests, and entirely different climate zones to reach Peru or the Mississippi. This made the diffusion of agriculture dramatically slower.
A single domesticated plant in the right geography could spread 8,000 kilometres east-west across Eurasia in centuries. The same plant might take millennia to travel 2,000 kilometres north-south across the Americas — if it made it at all.
The consequence was compounding advantage. Faster agriculture meant faster population growth. Larger populations meant more specialists — scribes, priests, soldiers, inventors. More inventors meant more technology. More technology meant more military power. The gap widened with each century, driven not by intelligence but by the shape of the landmass.
The Investor Lesson
This is the original compounding argument — applied to civilisations rather than portfolios. Small advantages at the start (better crops, easier trade routes) compound into massive divergences over time. The same logic applies to investing: starting early, staying invested, and letting small edges compound is exactly how wealth grows. A CHF 500/month savings plan at 7% grows to CHF 610,000 over 30 years — 75% of which accumulated in the final 15 years. Geography compounds. Time compounds. (→ Compound Interest Calculator)
Idea 3: Germs were the ultimate weapon — and they came from livestock
Perhaps Diamond's most devastating insight: the germs that killed millions of indigenous people worldwide originated from the domesticated animals of agricultural societies.
Smallpox came from cattle. Influenza from pigs and ducks. Measles from cattle rinderpest. Tuberculosis from cattle. Societies that had lived in close proximity to livestock for thousands of years gradually developed immunity. When those societies encountered peoples who had never been exposed, the results were catastrophic.
In 1532, Francisco Pizarro arrived in Peru with 168 soldiers. He faced the Inca emperor Atahuallpa and an army of 80,000. Within ten minutes, 7,000 Inca soldiers were dead. Not a single Spaniard was killed. The military technology mattered — steel swords versus wooden clubs — but the real weapon had arrived years earlier. Smallpox had already killed the previous Inca emperor and perhaps half the population, triggering a civil war that fractured the empire before Pizarro even landed.
An estimated 95% of Native American deaths following European contact were caused by disease, not warfare. The germ exchange was almost entirely one-directional — from Eurasia to the Americas — because Eurasia had far more domesticated animals, and therefore far more animal-origin diseases.
The Investor Lesson
The things that kill empires (and portfolios) are often invisible, slow-moving, and already in motion before anyone notices. Covid-19 was a reminder. The current fertiliser crisis is another. While Brent crude dominates headlines, the nitrogen shortage will transmit through food prices over months — invisible until it isn't. The best portfolio defence is the same as the best civilisational defence: diversification, resilience, and the patience to survive what you can't predict. (→ Quality Investing explained)
What This Means for Swiss Investors
Switzerland is one of the great beneficiaries of the geographic logic Diamond describes. Positioned at the crossroads of Europe, protected by Alpine geography, integrated into global trade but never dependent on a single resource — it is a case study in how geography creates durable advantage.
| Diamond's Principle | Swiss Investor Application |
|---|---|
| Geography determines resource advantage | The Gulf's dominance in fertiliser exports comes from cheap gas, not innovation. When geopolitics disrupts geography-dependent supply chains (Hormuz, Suez, Taiwan Strait), the companies least dependent on a single route win. Swiss multinationals with diversified supply chains — Nestlé, Roche, ABB — are built for this. (→ Tim Marshall Book Club) |
| Small advantages compound into vast divergences | The same compounding that turned early agriculture into empires turns early investing into wealth. Switzerland's tax-free capital gains + Pillar 3a + automatic savings plans = a compounding machine most countries don't offer. Use it. (→ Savings Plan) |
| Continental axes facilitate or block diffusion | Switzerland sits at the heart of the European east-west axis — the same axis that enabled Eurasia's compounding advantage. Today that translates into: EU single market access, global financial hub, multilingual talent pool. This structural advantage is geographic, not cultural. |
| Invisible threats (germs) do more damage than visible ones (guns) | The fertiliser crisis won't make headlines like an oil spike. But it will hit food prices, consumer spending, and emerging market stability — quietly, over months. Own companies with pricing power that can pass through cost increases. Avoid commodity producers trapped in boom-bust cycles. (→ arvy's Weekly: Fertiliser) |
arvy's Take
What holds up: The core argument — that geography, not race or culture, determined the broad trajectories of civilisations — is one of the most important intellectual contributions of the last 50 years. It reframes every conversation about global inequality, trade, and geopolitics. The book is sprawling but remarkably readable, and its central insight has only become more relevant in an era of supply chain disruptions, resource competition, and climate-driven migration. When we watch the Strait of Hormuz choke global fertiliser trade, we're watching Diamond's thesis play out in real time.
What's missing: The theory is powerful but reductive. By focusing on environmental determinism, Diamond underplays the role of institutions, culture, individual agency, and political choices. Why did Europe — and not China, which had many of the same geographic advantages — end up colonising the world? Diamond's answer (Europe's geographic fragmentation encouraged competition between states) is his weakest chapter. The book also can't explain why some countries with similar geographies diverge sharply (South Korea vs. North Korea, for example). It's a brilliant framework for the first 12,500 years — and an incomplete one for the last 500.
What we'd add: Read Diamond alongside Tim Marshall's geography trilogy for the modern geopolitical layer, The Lessons of History for the civilisational pattern, and The Fourth Turning for the cyclical overlay. Together, these four books form a lens through which to understand why the world looks the way it does — and why the companies and economies that are geographically well-positioned tend to compound through crises. The meta-lesson for investors: don't bet against geography. Bet with it.
3 Sentences to Remember
1. Geography dealt the starting hand. Domesticable plants and animals, continental orientation, and climate determined which civilisations developed first — and which compounded fastest.
2. The invisible threats (germs, not guns) did the most damage. Today's invisible threats — fertiliser shortages, supply chain fragility, demographic shifts — will do the same.
3. Small advantages compound into vast divergences — over millennia for civilisations, over decades for portfolios. Start early. Stay invested. Let geography and time work for you.
Buy the book
English (Amazon) · Deutsch — Arm und Reich (Amazon)
Also in Book Club: Tim Marshall's Geography Trilogy → · The Lessons of History → · The Fourth Turning →
Geography compounds. So does your portfolio.
Quality companies with global reach and diversified supply chains survive every crisis geography throws at them. From CHF 1/month.
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This article was written by Thierry Borgeat, Co-Founder of arvy, and reviewed by Patrick Rissi, CFA, and Florian Jauch, CFA.
Disclaimer: This article is for general informational purposes only and does not constitute personal investment advice. Amazon links are affiliate links. arvy is a FINMA-supervised asset manager.
