Death Is Optional: A Conversation: Yuval Noah Harari, Daniel Kahneman

Your chapter on science is one of my favorites and so is the title of that chapter, “The Discovery of Ignorance.” It presents the idea that science began when people discovered that there was ignorance, and that they could do something about it, that this was really the beginning of science. I love that phrase.

.. The main thing, and my main task as a historian is to get people to consider the possibilities which usually are outside their field of vision, because our present field of vision has been shaped by history and has been narrowed down by history, and if you understand how history has narrowed down our field of vision, this is what enables you to start broadening it.

.. we’re in the middle of a revolution in medicine. After medicine in the 20th century focused on healing the sick, now it is more and more focused on upgrading the healthy, which is a completely different project. And it’s a fundamentally different project in social and political terms, because whereas healing the sick is an egalitarian project … you assume there is a norm of health, anybody that falls below the norm, you try to give them a push to come back to the norm, upgrading is by definition an elitist project.

.. And many people say no, it will not happen, because we have the experience of the 20th century, that we had many medical advances, beginning with the rich or with the most advanced countries, and gradually they trickled down to everybody, and now everybody enjoys antibiotics or vaccinations or whatever, so this will happen again.

.. the 20th century, it’s the era of the masses, mass politics, mass economics. Every human being has value, has political, economic, and military value, simply because he or she is a human being, and this goes back to the structures of the military and of the economy, where every human being is valuable as a soldier in the trenches and as a worker in the factory.

.. But in the 21st century, there is a good chance that most humans will lose, they are losing, their military and economic value. This is true for the military, it’s done, it’s over. The age of the masses is over. We are no longer in the First World War, where you take millions of soldiers, give each one a rifle and have them run forward. And the same thing perhaps is happening in the economy. Maybe the biggest question of 21st century economics is what will be the need in the economy for most people in the year 2050.

.. Yes, the attitude now towards disease and old age and death is that they are basically technical problems.

.. And if you think about it from the viewpoint of the poor, it looks terrible, because throughout history, death was the great equalizer.

.. The basic process is the decoupling of intelligence from consciousness. Throughout history, you always had the two together.

.. The problem is different, that the system, the military and economic and political system doesn’t really need consciousness.

.. It needs intelligence. And intelligence is a far easier thing than consciousness. And the problem is, computers may not become conscious, I don’t know, ever … I would say 500 years … but they could be as intelligent or more intelligent than humans in particular tasks very quickly.

.. because we are undergoing, for thousands of years, a process of specialization, which makes it easier to replace us. To build a robot that could function effectively as a hunter-gatherer is extremely complex. You need to know so many different things. But to build a self-driving car, or to build a “Watson-bot” that can diagnose disease better than my doctor, this is relatively easy.

.. Once you really solve a problem like direct brain-computer interface … when brains and computers can interact directly, to take just one example, that’s it, that’s the end of history, that’s the end of biology as we know it. Nobody has a clue what will happen once you solve this.

.. In the Industrial Revolution of the 19th century, what humanity basically learned to produce was all kinds of stuff, like textiles and shoes and weapons and vehicles, and this was enough for the very few countries that underwent the revolution to subjugate everybody else. What we’re talking about now is like a second Industrial Revolution, but the product this time will not be textiles or machines or vehicles, or even weapons. The product this time will be humans themselves.

.. If a country, if a people, today are left behind, they will never get a second chance, especially because cheap labor will count for nothing. Once you know how to produce bodies and brains and minds, cheap labor in Africa or South Asia or wherever, it simply counts for nothing. So in geopolitical terms, we might see a repeat of the 19th century, but in a much larger scale.

.. The problem is more boredom, and what to do with people, and how will they find some sense of meaning in life when they are basically meaningless, worthless.

.. My best guess at present is a combination of drugs and computer games as a solution for most … it’s already happening. Under different titles, different headings, you see more and more people spending more and more time, or solving their inner problems with drugs and computer games, both legal drugs and illegal drugs. But this is just a wild guess.

.. According to the most moderate estimates, 20 million people were killed in the Taiping Rebellion, and it was 14 years before they suppressed it. He didn’t establish a Kingdom of Heavenly Peace, and he didn’t solve the problems of industrialization

.. We should be looking for new knowledge and new solutions, and starting with the realization that in all probability, nothing that exists at present offers a solution to these problems.

.. If you go back in most periods in history, say to the middle ages, you do see peasant uprisings. They all failed, because the masses were not powerful. And once you become superfluous, militarily and economically, you can still cause trouble, of course, but you don’t have the power to really change things.

.. The most obvious example is the collapse of the family and of the intimate community, and their replacement by the state and the market. Basically, for the entirety of history, humans lived as part of these small and very important units, the family and the intimate community, say 200 people, who are your village, your tribe, your neighborhood. You know everybody; they know you. You may not like them, but your life depends on them. They provide you with almost everything you need in order to survive. They are your healthcare. There is no pension fund; you have children, they are your pension fund. They are your bank, your school, your police, everything. If you lose your family and the intimate community, you’re dead, or you have to find a replacement family.

.. Some experts think that agriculture was the biggest mistake in human history, in terms of what it did to the individual. It’s obvious that on the collective level, agriculture enhanced the power of humankind in an amazing way. Without agriculture, you could not have cities and kingdoms and empires and so forth, but if you look at it from the viewpoint of the individual, then for many individuals, life was probably much worse as peasants in ancient Egypt then as hunter gatherers 20,000, 30,000 years earlier.

.. Putting all this together, there is a good case to be said for the idea that for the individual, agriculture was perhaps the biggest mistake in history.