Sapiens quiz
Yuval Noah Harari · 2014
Ten questions on Yuval Noah Harari's history of our species, each with a short explanation. Read it a while ago? Take the quiz before you look at the summary: what you can recall now is what you'll keep.
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Question 1 of 10
According to Harari, what was truly new about the language Sapiens developed in the Cognitive Revolution?
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A. It could describe things that don't exist at all Plenty of animals can warn that a lion is near. Only Sapiens can say the lion is the spirit that protects their tribe. Harari argues that talking about things that exist only in our heads let us imagine together, and that shared imagination became the basis for cooperation on a huge scale.
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Question 2 of 10
A band of 50 foragers can cooperate through friendship and gossip. What does Harari say lets 50,000 strangers cooperate?
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B. Belief in the same myths, such as gods or nations Gossip works up to roughly 150 people, about as many as anyone can know well. Past that, people need a story they share: a god, a nation, a set of laws. Strangers who believe the same story can trust each other enough to trade, build or fight side by side. Force alone, Harari argues, can't do it.
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Question 3 of 10
Harari imagines a disaster that kills every Peugeot employee and destroys all its factories. What does he say becomes of the company?
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C. It still exists and could borrow, hire and rebuild Peugeot isn't its cars, factories or workers, and its founder is long dead. Harari calls it a legal fiction: a limited liability company that exists because French law says so and people act on that belief. Wipe out every physical asset and the company can still take out loans and start again.
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Question 4 of 10
Why does Harari set the Code of Hammurabi beside the American Declaration of Independence?
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D. To show that both rest on beliefs, not objective truths Hammurabi's code sorted people into superiors, commoners and slaves; the Declaration says all men are created equal. Harari argues neither principle exists in nature: biology says we evolved, each with different traits. Both are imagined orders. They work not because they're true but because enough people believe in them.
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Question 5 of 10
Harari calls the Agricultural Revolution "history's biggest fraud." Why?
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B. It fed more people but made most lives harder Farming produced far more food in total, but the extra went into population growth and elites, not better lives. The average farmer worked harder than a forager for a poorer diet. Harari says the culprits weren't kings or priests but a few plants like wheat: in a sense, wheat domesticated us.
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Question 6 of 10
Christians and Muslims who disagreed bitterly about God could still agree on the same money. How does Harari explain this?
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A. Money only requires faith that others will accept it Faith asks you to accept a claim about God. A coin asks only that you expect the next person to take it. That much smaller ask is why, for Harari, money became the most widely shared system of trust humans have built, crossing borders that gods and kings could not.
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Question 7 of 10
A friend says empires were pure evil and left nothing worth keeping. How does Harari's view differ?
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D. He says they were brutal but left much we still use Harari doesn't excuse imperial violence, but he points out that much of what people now see as their own culture arrived with an empire: many Indians speak English, play cricket and drink tea, all British legacies. For the last 2,500 years, he notes, empire has been the most common form of political organization, and a very stable one.
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Question 8 of 10
Harari tells how America came to be named after Amerigo Vespucci, not Christopher Columbus. What point is he making?
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C. The modern age began with admitting what we didn't know Columbus never accepted that he had found a new continent; he was sure he had reached Asia. Vespucci argued the lands were a continent no ancient authority had known about, and a mapmaker named it after him. For Harari, that willingness to admit ignorance is what set modern science and exploration apart from earlier traditions.
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Question 9 of 10
People had the idea of credit long before modern times. According to Harari, why did they use it so little to fund new ventures?
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D. They didn't trust that the future would be richer Lenders only fund a bakery or a voyage if they expect the economy to grow, and for most of history it barely did. Harari describes a vicious circle: no growth, so little credit; little credit, so no growth. Modern capitalism broke it with a new faith in the future, and science kept that faith paying off.
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Question 10 of 10
In his chapter on happiness, Harari describes a Buddhist view. What does it say is the root of suffering?
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B. Restlessly chasing after pleasant feelings In this view, pleasant feelings fade as fast as they arrive, so chasing them leaves us restless however much we get. Peace comes from seeing feelings for what they are and no longer craving them. Harari offers it as a challenge to the usual views: happiness may lie not in feeling good but in no longer chasing good feelings.
Sapiens in one paragraph
Sapiens tells the story of our species in one sweep, from an unremarkable African ape to the dominant force on the planet. Yuval Noah Harari organizes it around three revolutions: the Cognitive, about 70,000 years ago; the Agricultural, about 12,000 years ago; and the Scientific, about 500 years ago. His central claim is that Sapiens rule the world because they can cooperate in huge numbers around shared stories: gods, nations, money and laws that exist only because many people believe in them.
The 9 key ideas of Sapiens
The Cognitive Revolution
About 70,000 years ago, Sapiens began to think and communicate in new ways. Harari says the most common theory is a chance genetic change in how our brains were wired, though no one knows for sure. Many animals can warn each other about a predator. Only Sapiens can talk about things that exist purely in the imagination, like spirits that protect a tribe, and imagine them together.
Societies run on imagined orders
Harari sets the Code of Hammurabi beside the American Declaration of Independence. One ranks people into classes; the other calls them equal. He argues that neither rests on objective truth: both are imagined orders, real only because many people believe in them at once. That doesn't make them worthless. A shared order is what lets millions of strangers cooperate, and it's why such orders are so hard to change.
Farming was a trap
Farming gave humanity more food in total but gave most individuals a worse deal: longer hours, a narrower diet, more disease and new kinds of inequality. Harari calls it "history's biggest fraud" and suggests that wheat, in a sense, domesticated us. Nobody chose the trap. Each step seemed sensible at the time, and by the time the costs were clear, populations had grown too large to go back to foraging.
Money runs on trust
Money isn't valuable because of what it's made of: barley, shells, silver and numbers on a computer have all worked. It works because everyone trusts that everyone else will accept it. For Harari, that makes money the most widely shared system of trust humans have ever created. The darker side, he notes, is that when anything can be bought, trust in money can crowd out trust between people.
Money, empires and religions unify
Over thousands of years, Harari argues, the world has moved from many isolated cultures toward one global society. Three forces with a universal reach drove it: money, empires and universal religions. Empires were often brutal, yet they spread languages, laws and ideas that their former subjects still use. Religions like Buddhism, Christianity and Islam offered one set of truths to anyone, anywhere, and set out to win converts.
Science began by admitting ignorance
Most premodern traditions held that the important answers already existed, in scripture or the wisdom of the ancients. The Scientific Revolution started from the opposite: a willingness to admit ignorance. Harari's example is maps. Older maps left unknown regions out or filled them with imagined monsters, as if nothing were missing; European mapmakers began leaving blank spaces. That admission drove observation, mathematics and a hunt for knowledge that would bring new powers.
Credit bets on a better future
For most of history, economies barely grew, so lenders had little reason to fund new ventures. The modern economy rests on a new belief: that the future will be richer than the present. That trust makes credit flow, credit funds growth, and growth confirms the trust. Harari shows science, empire and capital feeding each other: research brought power, empires brought wealth, and profits paid for more research.
More power, not more happiness
Harari asks a question most histories skip: did any of this make us happier? His answer is that it's far from clear. Happiness seems to depend less on wealth or health than on whether reality matches our expectations, and expectations rise as life improves. Biology also keeps each person's mood within a range. He closes the chapter with a Buddhist view: suffering comes from restlessly chasing pleasant feelings.
Has it held up?
Sapiens is a synthesis written for general readers, and parts of it rest on firm ground. Bioarchaeologists have long found that early farmers were, on average, less healthy than the foragers before them, with more dental disease, infection and signs of poor nutrition, which supports Harari's case against agriculture. The idea that large societies are held together by shared beliefs and institutions is widely accepted; what's distinctive is his choice to call them fictions.
Specialists have been harsher about the details. Anthropologist Christopher Hallpike argued that calling culture fiction confuses what is immaterial with what is untrue, that Harari ignores the real attractions of early farming (settled villages, feasts, larger groups for defense), and that when his facts are right they are seldom new. Philosopher Galen Strawson found much of the book interesting but faulted its "carelessness, exaggeration and sensationalism" and its sweeping verdicts on history.
Two building blocks are also disputed. Many archaeologists, following Sally McBrearty and Alison Brooks, think modern human behavior built up gradually in Africa over a much longer span rather than arriving in one burst. And the limit of about 150 relationships, which comes from Robin Dunbar's research, has been challenged: a 2021 reanalysis found the primate data can't support any single number.
Sources
- Hallpike, C. R. (2017, December). A response to Yuval Harari's 'Sapiens: A Brief History of Humankind'. New English Review.
- Larsen, C. S. (1995). Biological changes in human populations with agriculture. Annual Review of Anthropology, 24, 185–213.
- Lindenfors, P., Wartel, A., & Lind, J. (2021). 'Dunbar's number' deconstructed. Biology Letters, 17(5), 20210158.
- McBrearty, S., & Brooks, A. S. (2000). The revolution that wasn't: A new interpretation of the origin of modern human behavior. Journal of Human Evolution, 39(5), 453–563.
- Strawson, G. (2014, September 11). Sapiens: A brief history of humankind by Yuval Noah Harari, review. The Guardian.
Sapiens book club questions
10 questions for a book club or a class, from first reactions to where the book can be argued with. They work best once everyone has finished it. For questions that work with any nonfiction book and a plan for the evening, see our book club questions guide.
- Harari covers 70,000 years in one book. Which claim most changed how you see everyday things, such as money, nations, companies or the bread on your table?
- Harari treats gods, nations and human rights as shared stories that exist because people believe in them. How did that framing sit with you: illuminating, unsettling or unfair to what you believe?
- Harari says Peugeot is a legal fiction that would survive the loss of every factory and worker. Which other parts of daily life, like a border, a currency or a degree, work the same way?
- Harari argues that farming made life worse for most individuals while letting populations grow, so in a sense wheat domesticated us. Can you think of a modern technology that follows the same pattern?
- Harari says modern science began with admitting ignorance, as in maps that left blank spaces. In which areas of life do people still prefer confident answers to admitted gaps, and why?
- Harari argues the modern economy runs on trust that the future will be richer than the present. What happens to credit, careers and politics when people stop believing that?
- Anthropologist Christopher Hallpike argued that calling nations or laws fictions confuses what is immaterial with what is untrue. Is that a fair objection, and does it weaken Harari's argument or only his wording?
- Many archaeologists think modern human behavior built up gradually in Africa rather than arriving in one burst 70,000 years ago. How much does Harari's story depend on neat turning points like this?
- Harari says imagined orders are hard to change because millions believe in them at once. Which shared story in your workplace or community would you most like to rewrite, and what would it take?
- If happiness depends on reality matching expectations, as Harari suggests, how have your own expectations risen as your life improved, and what would you do differently knowing that?
How to remember Sapiens
Taking the quiz above was already the most useful thing you can do with a book you've read. Pulling an idea out of memory strengthens it far more than reading a summary again; psychologists call it active recall. The questions you got wrong are the ideas that were slipping away.
What keeps them is timing. Memory fades on a curve, quickly at first, so the next review works best in about three days, then a week later, then a few weeks after that. Our review schedule calculator gives you the exact dates, and how to remember what you read covers the whole method.
