Sapiens and Homo Deus

by Yuval Noah Harari

  Beyond the mental spectrum of humans, bats, whales and all other animals, even vaster and stranger continents may lie in wait. In all probability there is an infinite variety of mental states that no Sapiens, bat or dinosaur ever experienced in 4 billion years of terrestrial evolution, because they did not have the necessary faculties. In the future, however, powerful drugs, genetic engineering, electronic helmets and direct brain–computer interfaces may open passages to these places. Just as Columbus and Magellan sailed beyond the horizon to explore new islands and unknown continents, so we may one day embark for the antipodes of the mind.

  48. The spectrum of consciousness.

  48.Illustration: the spectrum of conciousness.

  I Smell Fear

  As long as doctors, engineers and customers focused on healing mental diseases and enjoying life in WEIRD societies, the study of subnormal mental states and WEIRD minds was perhaps sufficient to our needs. Though normative psychology is often accused of mistreating any divergence from the norm, in the last century it has brought relief to countless people, saving the lives and sanity of millions.

  However, at the beginning of the third millennium we face a completely different kind of challenge, as liberal humanism makes way for techno-humanism, and medicine is increasingly focused on upgrading the healthy rather than healing the sick. Doctors, engineers and customers no longer want merely to fix mental problems – they are now seeking to upgrade the mind. We are acquiring the technical abilities to begin manufacturing new states of consciousness, yet we lack a map of these potential new territories. Since we are familiar mainly with the normative and sub-normative mental spectrum of WEIRD people, we don’t even know what destinations to aim towards.

  Not surprisingly then, positive psychology has become the trendiest subfield of the discipline. In the 1990s leading experts such as Martin Seligman, Ed Dinner and Mihaly Csikszentmihalyi argued that psychology should study not just mental illnesses, but also mental strengths. How come we have a remarkably detailed atlas of the sick mind, but no scientific map of the prosperous mind? Over the last two decades, positive psychology has made important first steps in the study of super-normative mental states, but as of 2016, the super-normative zone is largely terra incognita to science.

  Under such circumstances, we might rush forward without any map, and focus on upgrading those mental abilities that the current economic and political system needs, while neglecting and even downgrading others. Of course, this is not a completely new phenomenon. For thousands of years the system has been shaping and reshaping our minds according to its needs. Sapiens originally evolved as members of small intimate communities, and their mental faculties were not adapted to living as cogs within a giant machine. However, with the rise of cities, kingdoms and empires, the system cultivated capacities required for large-scale cooperation, while disregarding other skills and aptitudes.

  For example, archaic humans probably made extensive use of their sense of smell. Hunter-gatherers are able to smell from a distance the difference between various animal species, various humans and even various emotions. Fear, for example, smells different from courage. When a man is afraid he secretes different chemicals compared to when he is full of courage. If you sat among an archaic band debating whether to start a war against the neighbours, you could literally smell public opinion.

  As Sapiens organised themselves into larger groups, noses lost much of their social importance, because they are useful only when dealing with small numbers of individuals. You cannot, for example, smell the American fear of China. Consequently, human olfactory powers were neglected. Brain areas that tens of thousands of years ago probably dealt with odours were put to work on more urgent tasks such as reading, mathematics and abstract reasoning. The system prefers that our neurons solve differential equations rather than smell our neighbours.5

  The same thing happened to our other senses and to the underlying ability to pay attention to our sensations. Ancient foragers were always alert and attentive. Wandering in the forest in search of mushrooms, they sniffed the wind carefully and watched the ground intently. When they found a mushroom, they ate it with the utmost attention, aware of every little nuance of flavour, which could distinguish an edible mushroom from its poisonous cousin. Members of today’s affluent societies don’t need such keen awareness. We can go to the supermarket and buy any of a thousand different dishes, all supervised by the health authorities. But whatever we choose – Italian pizza or Thai noodles – we are likely to eat it in haste in front of the TV, hardly paying attention to the taste (which is why food producers are constantly inventing exciting new flavours that might somehow pierce our curtain of indifference). Similarly, thanks to good transport services we can easily meet a friend who lives across town. But even when together we seldom give this friend our undivided attention because we constantly check our smartphone and our Facebook account, convinced that something far more interesting is probably happening elsewhere. Modern humanity is sick with FOMO – Fear Of Missing Out – and though we have more choice than ever before, we have lost the ability to really pay attention to whatever we choose.6

  In addition to smelling and paying attention, we have also been losing our ability to dream. Many cultures believed that what people see and do in their dreams is no less important than what they see and do while awake. Hence people actively developed their ability to dream, to remember dreams and even to control their actions in the dream world, which is known as ‘lucid dreaming’. Experts in lucid dreaming could move about the dream world at will, and claimed they could even travel to higher planes of existence or meet visitors from other worlds. The modern world, in contrast, dismisses dreams as subconscious messages at best, and mental garbage at worst. Consequently, dreams play a much smaller part in our lives, few people actively develop their dreaming skills, and many people claim that they don’t dream at all, or that they cannot remember any of their dreams.7

  Did the decline in our capacity to smell, pay attention and dream make our lives poorer and greyer? Maybe. But even if it did, for the economic and political system it was worth it. Your boss wants you to constantly check your emails rather than smell flowers or dream about fairies. For similar reasons, it is likely that future upgrades to the human mind will reflect political needs and market forces.

  For example, the US army’s ‘attention helmet’ is meant to help people focus on well-defined tasks and speed up their decision-making process. It may, however, reduce their ability to show empathy and tolerate doubts and inner conflicts. Humanist psychologists have pointed out that people in distress often don’t want a quick fix – they want somebody to listen to them and sympathise with their fears and misgivings. Suppose you are having an ongoing crisis in your workplace, because your new boss doesn’t appreciate your views, and insists on doing everything her way. After one particularly unhappy day, you pick up the phone and call a friend. But the friend has little time and energy for you, so he cuts you short, and tries to solve your problem: ‘Okay. I get it. Well, you really have just two options here: either quit the job, or stay and do what the boss wants. And if I were you, I would quit.’ That would hardly help. A really good friend would have patience, and not be so quick to find a solution. He would listen to your distress, and allow time and space for all your contradictory emotions and gnawing anxieties to surface.

  The attention helmet works a bit like the impatient friend. Of course sometimes – on the battlefield, for instance – people need to take firm decisions quickly. But there is more to life than that. If we start using the attention helmet in more and more situations, we may end up losing our ability to tolerate confusion, doubts and contradictions, just as we have lost our ability to smell, dream and pay attention. The system may push us in that direction, because it usually rewards us for the decisions we make rather than for our doubts. Yet a life of resolute decisions and quick fixes may be poorer and shallower than one of doubts and contradictions.

  When we mix a p
ractical ability to engineer minds with our ignorance of the mental spectrum and with the narrow interests of governments, armies and corporations, we get a recipe for trouble. We may successfully upgrade our bodies and our brains, while losing our minds in the process. Indeed, techno-humanism may end up downgrading humans. The system may prefer downgraded humans not because they would possess any superhuman knacks, but because they would lack some really disturbing human qualities that hamper the system and slow it down. As any farmer knows, it’s usually the brightest goat in the herd that stirs up the most trouble, which is why the Agricultural Revolution involved downgrading animals’ mental abilities. The second cognitive revolution, dreamed up by techno-humanists, might do the same to us, producing human cogs who communicate and process data far more effectively than ever before, but who can barely pay attention, dream or doubt. For millions of years we were enhanced chimpanzees. In the future, we may become oversized ants.

  The Nail on Which the Universe Hangs

  Techno-humanism faces another dire threat. Like all humanist sects, techno-humanism too sanctifies the human will, seeing it as the nail on which the entire universe hangs. Techno-humanism expects our desires to choose which mental abilities to develop and thereby determine the shape of future minds. Yet what will happen once technological progress makes it possible to reshape and engineer those desires?

  Humanism always emphasised that it is not easy to identify our authentic will. When we try to listen to ourselves, we are often flooded by a cacophony of conflicting noises. Indeed, we sometimes don’t really want to hear our authentic voice, because it might disclose unwelcome secrets and make uncomfortable requests. Many people take great care not to probe themselves too deeply. A successful lawyer on the fast track may stifle an inner voice telling her to take a break and have a child. A woman trapped in a dissatisfying marriage fears losing the security it provides. A guilt-ridden soldier is stalked by nightmares about atrocities he committed. A young man unsure of his sexuality follows a personal ‘don’t ask, don’t tell’ policy. Humanism doesn’t think any of these situations has an obvious one-size-fits-all solution. But humanism demands that we show some guts, listen to the inner messages even if they scare us, identify our authentic voice and then follow its instructions regardless of the difficulties.

  Technological progress has a very different agenda. It doesn’t want to listen to our inner voices. It wants to control them. Once we understand the biochemical system producing all these voices, we can play with the switches, turn up the volume here, lower it there, and make life much more easy and comfortable. We’ll give Ritalin to the distracted lawyer, Prozac to the guilty soldier and Cipralex to the dissatisfied wife. And that’s just the beginning.

  Humanists are often appalled by this approach, but we had better not pass judgement on it too quickly. The humanist recommendation to listen to ourselves has ruined the lives of many a person, whereas the right dosage of the right chemical has greatly improved the well-being and relationships of millions. In order to really listen to themselves, some people must first turn down the volume of the inner screams and diatribes. According to modern psychiatry, many ‘inner voices’ and ‘authentic wishes’ are nothing more than the product of biochemical imbalances and neurological diseases. People suffering from clinical depression repeatedly walk out on promising careers and healthy relationships because some biochemical glitch makes them see everything through dark-coloured lenses. Instead of listening to such destructive inner voices, it might be a good idea to shut them up. When Sally Adee used the attention helmet to silence the voices in her head, she not only became an expert markswoman, but she also felt much better about herself.

  Personally, each of us may have a different view about these issues. Yet from a historical perspective it is clear that something momentous is happening. The number one humanist commandment – listen to yourself! – is no longer self-evident. As we learn to turn our inner volume up and down, we give up our belief in authenticity, because it is no longer clear whose hand is on the switch. Silencing annoying noises inside my head seems like a wonderful idea, provided it enables me to finally hear my deep authentic self. But if there is no authentic self, how do I decide which voices to silence and which to amplify?

  Let’s assume, just for the sake of argument, that within a few decades brain scientists will grant us easy and accurate control over many inner voices. Imagine a young gay man from a devout Mormon family, who, after years of living in the closet, has finally accumulated enough money to finance a passion operation. He goes to the clinic armed with $100,000, determined to walk out as straight as Joseph Smith. Standing in front of the clinic’s door he mentally repeats what he intends to say to the doctor: ‘Doc, here’s $100,000. Please fix me so that I will never want men again.’ He then rings the bell, and the door is opened by a real-life George Clooney. ‘Doc,’ mumbles the overwhelmed lad, ‘here’s $100,000. Please fix me so that I will never want to be straight again.’

  Did the young man’s authentic self win over the religious brainwashing he underwent? Or did a moment’s temptation cause him to betray himself? Or perhaps there is simply no such thing as an authentic self that we can follow or betray? Once we can design and redesign our will, we could no longer see it as the ultimate source of all meaning and authority. For no matter what our will says, we can always make it say something else.

  According to humanism, only human desires imbue the world with meaning. Yet if we could choose our desires, on what basis could we possibly make such choices? Suppose Romeo and Juliet opened with Romeo having to decide with whom to fall in love. And suppose even after making a decision, Romeo could always retract and make a different choice instead. What kind of play would it have been? Well, that’s the play technological progress is trying to produce for us. When our desires make us uncomfortable, technology promises to bail us out. When the nail on which the entire universe hangs is pegged in a problematic spot, technology will pull it out and stick it somewhere else. But where exactly? If I could peg that nail anywhere in the cosmos, where should I peg it, and why there of all places?

  Humanist dramas unfold when people have uncomfortable desires. For example, it is extremely uncomfortable when Romeo of the house of Montague falls in love with Juliet of the house of Capulet, because the Montagues and Capulets are bitter enemies. The technological solution to such dramas is to ensure we never have uncomfortable desires. How much pain and sorrow would have been avoided if, instead of drinking poison, Romeo and Juliet could just take a pill or wear a helmet that would have redirected their star-crossed love towards other people.

  Techno-humanism faces an impossible dilemma here. It considers the human will to be the most important thing in the universe, hence it pushes humankind to develop technologies that can control and redesign the will. After all, it’s tempting to gain control over the most important thing in the world. Yet should we ever achieve such control, techno-humanism would not know what to do with it, because the sacred human would then become just another designer product. We can never deal with such technologies as long as we believe that the human will and the human experience are the supreme source of authority and meaning.

  Hence a bolder techno-religion seeks to sever the humanist umbilical cord altogether. It foresees a world that does not revolve around the desires and experiences of any humanlike beings. What might replace desires and experiences as the source of all meaning and authority? As of 2016, there is one candidate sitting in history’s reception room waiting for the job interview. This candidate is information. The most interesting emerging religion is Dataism, which venerates neither gods nor man – it worships data.

  11

  The Data Religion

  Dataism declares that the universe consists of data flows, and the value of any phenomenon or entity is determined by its contribution to data processing.1 This may strike you as some eccentric fringe notion, but in fact it has already conquered most of the scientific establishment. Dataism w
as born from the explosive confluence of two scientific tidal waves. In the 150 years since Charles Darwin published On the Origin of Species, the life sciences have come to see organisms as biochemical algorithms. Simultaneously, in the eight decades since Alan Turing formulated the idea of a Turing Machine, computer scientists have learned to engineer increasingly sophisticated electronic algorithms. Dataism puts the two together, pointing out that exactly the same mathematical laws apply to both biochemical and electronic algorithms. Dataism thereby collapses the barrier between animals and machines, and expects electronic algorithms to eventually decipher and outperform biochemical algorithms.

  For politicians, business people and ordinary consumers, Dataism offers groundbreaking technologies and immense new powers. For scholars and intellectuals it also promises to provide the scientific holy grail that has eluded us for centuries: a single overarching theory that unifies all the scientific disciplines from musicology through economics to biology. According to Dataism, Beethoven’s Fifth Symphony, a stock-exchange bubble and the flu virus are just three patterns of data flow that can be analysed using the same basic concepts and tools. This idea is extremely attractive. It gives all scientists a common language, builds bridges over academic rifts and easily exports insights across disciplinary borders. Musicologists, economists and cell biologists can finally understand each other.

  In the process Dataism inverts the traditional pyramid of learning. Hitherto, data was seen as only the first step in a long chain of intellectual activity. Humans were supposed to distil data into information, information into knowledge, and knowledge into wisdom. However, Dataists believe that humans can no longer cope with the immense flows of data, hence they cannot distil data into information, let alone into knowledge or wisdom. The work of processing data should therefore be entrusted to electronic algorithms, whose capacity far exceeds that of the human brain. In practice, this means that Dataists are sceptical about human knowledge and wisdom, and prefer to put their trust in Big Data and computer algorithms.