Quote by – YUVAL NOAH HARARI - Deepstash
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“In a world deluged by irrelevant information, clarity is power.”



604 reads


19 – Education

19 – Education

Much of what children learn today will be irrelevant in 2050. So, teachers need to stop overloading their students with information and develop their ability to make sense of new information. Future adults need to identify important information among all the irrelevant data.


560 reads

18 – Science Fiction

18 – Science Fiction

Building on from the last chapter, Harari spends some time talking in greater depth about science fiction. He believes that it is the most important artistic genre in the 21st century. That said, the most popular science fiction is not necessarily very accurate, e.g., The Matrix and Westworld. So...


521 reads

20 – Meaning

20 – Meaning

Harari includes the teachings of Buddha to explain the fluidity of meaning. The Buddha taught that there are three basic universal realities:

  1. Everything is constantly changing
  2. Nothing has any enduring essence
  3. Nothing is completely satisfied

Because everythin...


541 reads

Harari believes technology has the potential to solve the issues it has encouraged. He uses the example of lab-grown meat. Research suggests animal agriculture creates more carbon emissions than all forms of transportation combined. So, to tackle climate change, there needs to be an alternative. ...


897 reads

11 – War

The prevalence of war has dropped considerably over the past few decades. Harari believes this is partly due to our transition away from fighting over resources and toward fighting over knowledge. You could previously obtain wheat fields, goldmines and oil fields from warfare. You can’t conquer k...


632 reads

15 – Ignorance

15 – Ignorance

Just like animals, humans make most decisions based on emotional reactions and shortcuts. But, emotions and heuristics are not sufficient in the modern world. The key to human success in the modern world is our ability to think together in large groups. This has allowed us to rely on others’ skil...


540 reads

16 and 17 – Post-Truth

16 and 17 – Post-Truth

The modern world is full of fake news. Harari describes modern fake news as one thousand people believing a made-up story for one month. When a billion people believe a made-up story for a thousand years, that’s what Harari calls religion. We can learn about the power of fiction by looking at re...


527 reads

9 – Immigration

9 – Immigration

Harari starts by specifying the basic conditions required for immigration to occur. There are three of them and they are:

The host country allows immigrants into their country

The immigrants are expected to embrace the norms and values of the host country

If the immigrants integ...


735 reads

3 – Liberty

3 – Liberty

Harari believes elections are not about what we think but what we feel. Despite clear flaws in democracies, most believe it is still better than all its alternatives. Harari argues that big data and AI have the potential to run the world in the future. If we can make decisions on education, work ...


1.62K reads

5 – Community

5 – Community

Technology addiction is significantly impacting human connection and community. The internet has helped people who live far away to keep in touch. For example, the author explains he can easily speak to his cousin in Switzerland. Without technology, he could easily lose connection with this relat...


1.09K reads

Harari uses the example of climate change skepticism. A left-wing socialist will rarely tweet claiming that climate change is a Chinese hoax. These types of tweets are almost solely produced by the nationalist right. These nationalists would rather deny truth than have to work internationally to ...


840 reads

2 – Work

2 – Work

The future of the workplace will include significantly more computers than we see today. As we develop a better understanding of human emotions, desires and choices, computers will become more versatile in workplaces. Harari uses the example of self-driving vehicles. He cites a study by the US Na...


2.33K reads

4 – Equality

4 – Equality

Data is far more accessible than our current examples of resources. Land, machines and other resources make it easy for people to acquire wealth unavailable to others. But data is everywhere and can move at the speed of light. You can make as many copies as you want. So, a future problem is under...


1.23K reads

By far the most important of these characteristics is truth. Harari believes social reality is the ideal we should aspire to. Social reality is built upon a commitment to modern science rather than faith. Once we uncover scientific achievements, we must also cherish the responsibility of these fi...


525 reads

21 – Meditation

21 – Meditation

Harari agrees with ancient philosophers by arguing that the deepest source of our suffering is our minds. In fact, suffering does not objectively exist outside of minds. Meditation allows you to better understand this reality and challenge your mind. It helps you focus on your consciousness, whic...


569 reads

“Morality doesn’t mean ‘following divine commands’. It means ‘reducing suffering’. Hence in order to act morally, you don’t need to believe in any myth or story. You just need to develop a deep appreciation of suffering.”



655 reads

8 – Religion

8 – Religion

To help us understand the problem of religion in modern society, Harari outlines the three types of problems we face:

  • Technical problems
  • Policy problems
  • Identity problems

Harari points out that Karl Marx had previously argued that religion doesn’t have much ...


980 reads

Harari believes the worst failing of science fiction is its confusion of intelligence with consciousness. He is not worried about a war between robots and humans. He instead believes there could be conflict between a small set of superhuman elites. So, Harari argues that Karl Marx is still a bett...


510 reads

14 – Secularism

14 – Secularism

The alternative to building a society on God is building one on secularism. Harari notes we must remember the foundation of the secular code:

  • Truth
  • Compassion
  • Equality
  • Freedom
  • Courage
  • Responsibility


684 reads

For example, there will be numerous liberal minorities who can migrate to an intolerant society considered acceptable by the host society. But, there will be a threshold where numbers of liberal minorities will be counteracting the country’s intolerant society. To better understand anti-immigrati...


690 reads

<p>Education experts are now p...

Education experts are now pushing for schools to start teaching what Harari calls the four Cs:

  1. Critical thinking
  2. Communication
  3. Collaboration
  4. Creativity


622 reads

The easiest way to identify if somebody is cheating by using a computer aid is when they play particularly creative moves. So, as creativity is a sign of AI influence, we can also expect AI to play an important role in the creative arts.

The lesson to learn from all this is that the future ...


1.74K reads

12 – Humility

12 – Humility

The highlight of this chapter is that humans naturally show humility. Apes have evolved the tendency to help the poor and needy. They evolved these behaviors millions of years before the Bible instructed ancient Israelites to do the same. So, there is no need to rely on a religious text or any ot...


626 reads

Harari provides the example of how data has been used in warfare to strengthen this argument. He states that whenever Palestinians make a phone call or post something on social media, they are monitored by Israeli microphones, cameras, drones and software. Then, this data is analyzed by algorithm...


1.36K reads

“At present, people are happy to give away their most valuable asset—their personal data—in exchange for free email services and funny cat videos. It’s a bit like African and Native American tribes who unwittingly sold entire countries to European imperialists in excha...



700 reads

10 – Terrorism

10 – Terrorism

Harari believes the overreaction to terrorism poses a far greater threat than terrorism itself. Terrorists have killed very few people but can terrify billions due to political responses. The author points out that each year since 9/11, only 50 people are killed in the EU, 10 in the US and 7 in C...


708 reads

13 – God

13 – God

Building on his point from chapter 12, Harari also thinks you do not need to believe in God to be moral. Morality is about reducing suffering and this does not require belief in a myth or story. Again, society does not need to believe in a powerful God to be scared into doing the right thing. Imm...


622 reads

7 – Nationalism

7 – Nationalism

There is a difference between benign patriotism and nationalism. Patriotism should be built on the idea that your nation is unique (which is true of all countries). It is when people start believing their nation is superior that issues arise. The issue with nationalism is that these narrow belief...


996 reads

The future offers opportunities for new types of stories that include humans, superhumans and artificial intelligence. Harari believes AI will become increasingly sophisticated. He also believes that superhumans will soon be created that combine AI and humans. Despite a change in the characters i...


2.73K reads

1 – Disillusionment

Yuval Noah Harari starts the book by talking about the disillusionment visible in modern society. For example, the political disillusionment seen in many European countries. He argues that one of the driving factors for this disillusionment is information overload. Our brains do not easily proces...


3.79K reads

6 – Civilization

Historically, humankind has been divided into countless isolated civilizations. Thousands of years ago, these civilizations would have consisted of merely a handful of people. Although the number of independent civilizations has reduced over time, Harari argues the future holds a single global ci...


983 reads

So, instead of encouraging fear in society, Harari believes effective counter-terrorism should include the following three things:

  1. The government should make sure their actions against terror networks are relatively hidden
  2. The media must be forced to avoid hysteria and overrepo...


683 reads

The author agrees and subsequently believes that war between religions is not policy-based. Instead, it appears to be a combination of technical and identity problems. That said, religion allows the smallest differences to have a significant impact. For example, Eastern Orthodox and Western Chris...


814 reads

Often people worry about the possibility of AI completely replacing us in the workplace, leaving us with no jobs. Harari does not believe this is true, though. He believes that AI will actually help create new jobs for humans. Those who are willing to cooperate with AI will be the ones who flouri...


2.01K reads




Book summaries mostly ...

In a world deluged by irrelevant information, clarity is power. Censorship works not by blocking the flow of information, but rather by flooding people with disinformation and distractions. 21 Lessons for the 21st Century cuts through these muddy waters and confronts some of the most urgent questions on today’s global agenda.

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Useful, irrelevant, and urgent information

  • Useful information when combined with other data: Information is seldom useful by itself. It is part of a bigger picture. It is crucial to have a general idea of the scene to know how the information slots into the larger picture.
  • Irrelevant information in ...

You can diagnose yourself

You can diagnose yourself

In spite of the validity of reputable sites, Dr. Google is not the best doctor. A lot of information is irrelevant, incomplete of plain false.

The Alternative To Revenge

Attaining the heights of success by continued discipline and hustle is the best form of revenge, as it makes the original wrongdoer irrelevant and puny in front of one’s enormous stature.

One must set goals and work hard towards them, attaining growth, power and fame.


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