Sapiens, in bytes

The idea

For most of history, Homo sapiens was an unremarkable animal, one of several human species living alongside Neanderthals and others.

Example

Our ancestors were once a modest part of the food chain.

The idea

Around 70,000 years ago, Harari argues, sapiens developed new ways of thinking and communicating, letting them spread across the world.

Example

Language allowed complex plans, warnings and cooperation.

The idea

Harari suggests language may have evolved partly for gossip: knowing who to trust let groups grow larger and cooperate.

Example

Workplace trust still depends on what people say about each other.

The idea

Sapiens' unique ability is believing shared fictions: gods, nations, money and companies. These “imagined orders” let millions of strangers cooperate.

Example

A company exists only because people agree it does, yet it employs thousands.

The idea

Harari argues that hunter-gatherers often had varied diets, shorter working days and fewer infectious diseases than early farmers.

Example

Some foraging communities worked fewer hours than many modern professionals.

The idea

The Agricultural Revolution, about 12,000 years ago, produced more food but, Harari argues, harder lives for most individuals: more work, worse diets, more disease.

Example

Wheat, in his phrase, domesticated humans rather than the other way round.

The idea

Each comfort becomes a necessity, creating new obligations. People keep working harder to sustain a lifestyle that was meant to make life easier.

Example

Email made communication faster, and now we answer hundreds a day.

The idea

Large societies rely on imagined orders, like laws and rights, that only work while enough people believe in them.

Example

A banknote is valuable only because others accept it.

The idea

Harari uses Peugeot to show that a company is not its factories, staff or cars. It exists because people collectively believe in laws and contracts that say it does.

The idea

Early writing developed largely to record taxes, debts and ownership, not poetry.

Example

Some of the earliest written records are essentially accounting entries.

The idea

Harari calls money the most universal and efficient system of mutual trust ever devised. People who share nothing else accept the same currency.

Example

Strangers across the world trade using money without trusting each other personally.

The idea

Empires, though often brutal, spread languages, laws and ideas across vast areas, shaping today's world.

Example

Many languages and legal systems today trace back to former empires.

The idea

Religions, including modern ideologies Harari treats as religions, unite people through shared values and stories.

Example

Ideologies such as liberalism or nationalism also bind millions together.

The idea

The Scientific Revolution began, Harari argues, when Europeans admitted they didn't know everything, and set out to learn.

Example

Old maps left unknown areas blank, inviting exploration.

The idea

Science advanced alongside empires and capitalism, each funding and using the others.

Example

Voyages of discovery were funded for profit and power, and also produced knowledge.

The idea

Modern economies run on credit: belief that the future will be richer than the present.

Example

Loans to start businesses assume future growth.

The idea

Industry transformed energy use, work and family life, replacing many roles of family and community with states and markets.

Example

People now rely on governments and companies for things families once provided.

The idea

Despite enormous material progress, Harari questions whether people today are happier than their ancestors.

Example

Rising expectations can cancel out improved living standards.

The idea

Harari calls modern science's attempt to defeat ageing and death the Gilgamesh Project, after the ancient hero who searched for immortality.

The idea

Large-scale war between major powers has become rarer in recent decades, partly due to nuclear weapons and global trade.

Example

Trade links make conflict costly for both sides.

The idea

Harari closes by asking whether biotechnology and computing may transform humans beyond recognition.

Example

Genetic engineering and AI raise questions about what being human means.

The idea

Humans now have god-like powers but little clarity about their goals. Harari warns that power without wisdom is dangerous.

Example

New technology arrives faster than our ethical thinking.