The liberal belief in the feelings and free choices of individuals is neither natural nor very ancient. For thousands of years people believed that authority came from divine laws rather than from the human heart, and that we should therefore sanctify the word of God rather than human liberty. Only in the last few centuries did the source of authority shift from celestial deities to flesh-and-blood humans.
Soon authority might shift again – from humans to algorithms. Just as divine authority was legitimised by religious mythologies, and human authority was justified by the liberal story, so the coming technological revolution might establish the authority of Big Data algorithms, while undermining the very idea of individual freedom.
As we mentioned in the previous chapter, scientific insights into the way our brains and bodies work suggest that our feelings are not some uniquely human spiritual quality, and they do not reflect any kind of ‘free will’. Rather, feelings are biochemical mechanisms that all mammals and birds use in order to quickly calculate probabilities of survival and reproduction. Feelings aren’t based on intuition, inspiration or freedom – they are based on calculation.
When a monkey, mouse or human sees a snake, fear arises because millions of neurons in the brain swiftly calculate the relevant data and conclude that the probability of death is high. Feelings of sexual attraction arise when other biochemical algorithms calculate that a nearby individual offers a high probability of successful mating, social bonding, or some other coveted goal. Moral feelings such as outrage, guilt or forgiveness derive from neural mechanisms that evolved to enable group cooperation. All these biochemical algorithms were honed through millions of years of evolution. If the feelings of some ancient ancestor made a mistake, the genes shaping these feelings did not pass on to the next generation. Feelings are thus not the opposite of rationality – they embody evolutionary rationality.
We usually fail to realise that feelings are in fact calculations, because the rapid process of calculation occurs far below our threshold of awareness. We don’t feel the millions of neurons in the brain computing probabilities of survival and reproduction, so we erroneously believe that our fear of snakes, our choice of sexual mates, or our opinions about the European Union are the result of some mysterious ‘free will’.
Nevertheless, though liberalism is wrong to think that our feelings reflect a free will, up until today relying on feelings still made good practical sense. For although there was nothing magical or free about our feelings, they were the best method in the universe for deciding what to study, who to marry, and which party to vote for. And no outside system could hope to understand my feelings better than me. Even if the Spanish Inquisition or the Soviet KGB spied on me every minute of every day, they lacked the biological knowledge and the computing power necessary to hack the biochemical processes shaping my desires and choices. For all practical purposes, it was reasonable to argue that I have free will, because my will was shaped mainly by the interplay of inner forces, which nobody outside could see. I could enjoy the illusion that I control my secret inner arena, while outsiders could never really understand what is happening inside me and how I make decisions.
Accordingly, liberalism was correct in counselling people to follow their heart rather than the dictates of some priest or party apparatchik. However, soon computer algorithms could give you better counsel than human feelings. As the Spanish Inquisition and the KGB give way to Google and Baidu, ‘free will’ will likely be exposed as a myth, and liberalism might lose its practical advantages.
For we are now at the confluence of two immense revolutions. On the one hand biologists are deciphering the mysteries of the human body, and in particular, of the brain and of human feelings. At the same time computer scientists are giving us unprecedented data-processing power. When the biotech revolution merges with the infotech revolution, it will produce Big Data algorithms that can monitor and understand my feelings much better than I can, and then authority will probably shift from humans to computers. My illusion of free will is likely to disintegrate as I daily encounter institutions, corporations and government agencies that understand and manipulate what was hitherto my inaccessible inner realm.
This is already happening in the field of medicine. The most important medical decisions in our life rely not on our feelings of illness or wellness, or even on the informed predictions of our doctor – but on the calculations of computers which understand our bodies much better than we do. Within a few decades, Big Data algorithms informed by a constant stream of biometric data could monitor our health 24/7. They could detect the very beginning of influenza, cancer or Alzheimer’s disease, long before we feel anything is wrong with us. They could then recommend appropriate treatments, diets and daily regimens, custom-built for our unique physique, DNA and personality.
People will enjoy the best healthcare in history, but for precisely this reason they will probably be sick all the time. There is always something wrong somewhere in the body. There is always something that can be improved. In the past, you felt perfectly healthy as long as you didn’t sense pain or you didn’t suffer from an apparent disability such as limping. But by 2050, thanks to biometric sensors and Big Data algorithms, diseases may be diagnosed and treated long before they lead to pain or disability. As a result, you will always find yourself suffering from some ‘medical condition’ and following this or that algorithmic recommendation. If you refuse, perhaps your medical insurance would become invalid, or your boss would fire you – why should they pay the price of your obstinacy?