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Exploring Guns, Germs, and Steel: A Reader’s Reflections
Guns, Germs, and Steel is Jared Diamond’s second book, and in recent years, it has gained considerable popularity in China. I’ve even listened to Fan Deng’s commentary on it. However, this book was first published in 1997, making it a work with some years behind it.
My interest in reading this book stemmed from encountering Charlie Munger’s praise for Diamond’s interdisciplinary thinking in one of Munger’s own books, alongside his strong recommendation of Guns, Germs, and Steel. That endorsement piqued my curiosity, and I’m glad it did—I learned a great deal from it. Jared Diamond’s academic journey is itself quite remarkable, marked by several shifts in research focus. His diverse experiences and interests have shaped him into a thinker with a rare interdisciplinary perspective. To me, Guns, Germs, and Steel feels like a culmination of his accumulated insights from zoology, botany, anthropology, linguistics, and history. Diamond sidesteps the technical minutiae of each field, instead weaving together a broader framework through independent thought to present fascinating perspectives on human history. Though it draws on multidisciplinary knowledge, it’s not an academic tome—it’s more of a popular science book, written in a concise yet descriptive style that makes it a pleasure to read.
One of the book’s most intriguing aspects is how it directly tackles a series of questions about why human development has unfolded in its current pattern, while also challenging some common misconceptions. For instance:
- Why is the distribution of wealth and power shaped as it is today (with Europe and the Americas leading, Asia catching up, and Africa lagging), rather than some other configuration?
- Why, during the Age of Exploration, was it Europeans crossing oceans to kill, conquer, and plunder, rather than the indigenous peoples of the Americas, Africa, or Australia?
- Why, despite being the cradle of humanity, has Africa developed so slowly, to the point of being thoroughly colonized by Europe and others in modern history? A common explanation is that Europeans are innately more intelligent than Africans. Another suggests that European society and culture are more open, inclusive, and exploratory than African ones. But are these really the reasons?
- Does latitude have any connection to racial intelligence or creativity? For example, Northern European countries now dominate the high-end sectors of manufacturing and design and have historically contributed significantly to foundational theoretical disciplines. What explains their high creativity? By contrast, what accounts for Africa’s perceived lower creativity? I recall hearing similar ideas from teachers in elementary or middle school, and two explanations often come up, both seemingly plausible at first glance:
- Explanation 1: “A favorite of Northern Europeans, this theory holds that the cold climate of Northern Europe stimulates creativity and energy, while the hot, humid tropics dull the mind.” The logic here is that harsh, cold environments foster a sense of urgency, leading to greater diligence and innovation, whereas warm, resource-rich climates reduce survival pressure, breeding laziness and boredom.
- Explanation 2: “In high-latitude regions with long winters, people, stuck indoors with nothing to do, turned to invention to pass the time.” This suggests that Northern Europeans, faced with long, cold nights (even polar nights), had little choice but to tinker and create out of sheer boredom.
Since the Industrial Revolution, Europe has driven rapid technological innovation and upgrades worldwide. But how does technological progress actually happen? Several perspectives seem reasonable— which one is correct?
- View 1: The Great Man Theory. Technological advancement stems from the sudden genius of exceptional individuals.
- View 2: The Social-Cultural Perspective. “Technological development has little to do with individual inventive talent; what matters is society’s attitude toward innovation.” A government and society that encourage invention can nurture and identify the talent needed for breakthroughs.
- View 3: The Demand-Driven View. “Necessity is the mother of invention.” Market demand spurs individuals to develop technologies to capture market share, thus driving progress.
Relying solely on my own reasoning, all these ideas sound plausible. But in Guns, Germs, and Steel, Jared Diamond suggests they might all be common misconceptions. Space is limited here, so I won’t dive deeper into his rebuttals just yet.
A Simplified Summary of the Book’s Core Argument
Let me offer a brief and admittedly loose summary of the book’s central thesis, based on my understanding.
Across the globe, different ethnic groups evolved in their respective regions. Those who first developed sufficiently advanced food production techniques (i.e., agriculture) gained an early chance to advance in specialized technologies and political-cultural systems. Only when food was abundant could a division of labor emerge, allowing some individuals to step away from food production and take on specialized roles. These “non-producers” included artisans (technology), soldiers (military), and tribal chiefs (politics, religion, culture), among others. In today’s modern society, this division has become so refined that most people no longer produce food at all.
By contrast, an interesting phenomenon emerges in primitive hunter-gatherer societies: everyone participates in food production, but the workload is light. As long as the group gathers enough to feed a dozen or so people, they’re done for the day. Their burden is lighter than that of farmers in agricultural civilizations—and certainly less than that of modern internet coders. But without specialized division of labor or long-term development, they remain stagnant, essentially “lying flat.”
Similarly, the ethnic groups that first developed animal husbandry—particularly those who domesticated large mammals—gained a long-term boost to their development. Large mammals mattered because they:
- Provided more protein-rich food (a role poultry could also fill);
- Increased agricultural efficiency and output (e.g., oxen plowing fields);
- Enhanced migration and transport capabilities (e.g., donkeys carrying goods), allowing tribes to expand and proliferate faster;
- Offered significant military advantages (e.g., warhorses and cavalry).
Large mammals also played another critical role: as agriculture and animal husbandry advanced, human populations began to concentrate in dense settlements—cities. In these urban centers, people didn’t produce food but relied on mules, horses, and oxen to transport grain from surrounding agricultural areas. Living in close quarters with livestock, humans were exposed to animal-borne pathogens, which evolved into human infectious diseases. Ethnic groups that endured these diseases developed greater biological resilience, and those germs even became powerful weapons in their colonization of other regions.
For example: “In 1520, a slave infected with smallpox arrived in Mexico from Cuba. The resulting epidemic killed half the Aztec Empire’s population, including Emperor Cuitláhuac. This mysterious disease targeted Native Americans while sparing all the Spanish, leaving survivors demoralized. Mexico’s population, originally 20 million, plummeted to 1.6 million by 1618.”
The book’s most fascinating insight follows: Okay, we now know that whoever first developed advanced agriculture and large-scale animal domestication could dominate early world history. But who got there first—was it random? Was it determined by differences in intelligence or diligence among ethnic groups? Neither, says Diamond—it was dictated by geography.
Specifically, the ability to develop agriculture hinged on who could first domesticate stable, high-yield crops. Modern staples like rice, wheat, barley, corn, potatoes, and soybeans all originated from wild plants tamed step-by-step by early humans. But the ability to domesticate crops had little to do with intelligence or effort. The decisive factor was whether a region naturally harbored plants suitable for domestication. Diamond argues, with detailed evidence, that not all plants can be domesticated—many that remain wild aren’t necessarily inedible or lacking in nutrition; they’re simply untamable. Acorns, for instance, are edible but still undomesticated today.
Likewise, only a handful of large mammals worldwide are suitable for domestication. It’s not that the meat of other large animals is unpalatable or their combat prowess weak—it’s that they can’t be tamed. Tigers, lions, hippos, rhinos, and zebras remain zoo spectacles because domestication eludes them.
Thus, in prehistoric times, the “biological package” of plants and animals available in a region was the key to its development. This term, coined by Diamond, gives me the vibe of playing a game like Civilization. If your tribe spawned in a land teeming with wild wheat and roaming wild horses, congratulations—you’ve basically won.
The development of ethnic groups wasn’t tied to intelligence or diligence because, in essence, it boiled down to natural selection: survival of the fittest. In plain terms: if your tribe’s early territory had a solid biological package, probability favored the emergence of clever, industrious individuals who’d produce more food and build stronger tribes, naturally outcompeting the lazy or dim-witted. This replacement happened through military conquest or reproductive dominance (tribes with efficient food production could raise more children, grow larger populations, and become dominant).
In short, the early stages of civilization were a roll of the dice, determined largely by the biological package of your region.
From Early Advantages to Later Dynamics
Early success made mid- and late-stage development much easier, but the later stages introduced more variables as resource and cultural exchange intensified. Countries without cattle or horses could import them. Regions lacking high-yield crops could adopt them (e.g., the U.S. had a geography suited to corn, but wild corn didn’t originate in North America—it was domesticated in Mexico and took nearly a millennium to spread northward). Production techniques, writing systems, and political structures from early developers could also diffuse to others—history lessons we’ve all studied.
Yet mid-stage development was still constrained by geography, primarily because it influenced the efficiency of cultural exchange, which in turn shaped global patterns. Take firearms as an example: in 1543, guns reached Japan, and by 1600, “Japan led the world in both the quantity and quality of its firearms.” But because guns threatened the dignity and interests of the samurai class, the Japanese government gradually banned and abandoned their production, entering a period of isolation. It wasn’t until 1853, when Matthew Perry’s U.S. fleet forced open Japan’s borders, that Japan resumed firearm production.
So, Japan had a chance to lead in firearms technology but regressed, while Europe seized the opportunity and colonized the globe. Why didn’t Europe ban guns like Japan did? Was it mere chance? Not quite. In Europe, fierce competition among neighboring states meant “any country refusing to adopt guns risked being wiped out by a gun-wielding neighbor.” Japan, a unified island nation isolated by geography, faced no such immediate pressure—its decisions didn’t expose vulnerabilities in the short term.
Digging deeper, Europe’s patchwork of competing, culturally distinct nations also ties back to geography. Unlike China, with the Yellow and Yangtze Rivers linking vast arable lands for a single ethnic group to dominate, Europe’s mountains, sparse large rivers, and natural barriers prevented any one tribe from rapidly expanding early on. This resulted in a fragmented continent of multiple ethnicities, cultures, and nations—competing relentlessly, unable to unify.
This explains why Europe colonized Africa, not the reverse. Though not the earliest developer, Europe was close to one of the earliest hubs (the Fertile Crescent, now the Middle East), quickly adopting domesticated plants and animals, production techniques, and writing. It also absorbed advanced Chinese technologies (like gunpowder) via the Silk Road. Its complex geography fostered a multi-ethnic, multi-cultural, multi-state environment of constant competition and mutual threat, accelerating progress. Africa, despite being humanity’s birthplace, lacked a rich pool of domesticable plants and animals, slowing its development—some groups still live as hunter-gatherers today.
A Game of Civilization?
From this perspective, it’s easier to see why Elon Musk sometimes quips that humans might be pawns in a simulation game run by an advanced civilization. If this were a game, its early and middle phases would be dictated by geographic luck. But human civilization now seems to be in its late stages, with global exchange of technology and knowledge unprecedentedly swift (barring a few exceptions). At this point, are we finally entering a phase where racial intelligence, diligence, or the openness of national systems truly matter?
