Homo Deus

Before Harari can explain what might replace us, he has to name what we currently believe, and his answer is that modern people are almost all humanists, whether or not they'd use the word. Humanism, in his usage, isn't a philosophy club. It's the working religion of the modern world: the conviction that meaning and authority flow from within the individual human being. Where a medieval Christian looked to scripture and priest for answers, the modern person looks inward — to feelings, preferences, choices, the voice of the heart. The customer is always right, the voter knows best, beauty is in the eye of the beholder, follow your dream. All of these, Harari argues, are humanist commandments.

This inward turn quietly underwrites nearly everything we treat as obvious. Free-market economics assumes each individual is the best judge of their own interest. Democracy assumes the aggregate of individual feelings, expressed as votes, is the legitimate source of political authority. Modern education asks students to think for themselves. Even romantic love became a matter of consulting one's feelings rather than one's parents. The self, in this scheme, is the ultimate court of appeal — unified, free, and authoritative. There is nowhere higher to take the question.

Into the vacancy a fading humanism might leave, Harari sees a successor already assembling itself, and he gives it a provocative name: Dataism. Dataism is the emerging worldview that treats the universe as flows of information, judging any phenomenon — a person, a company, a poem — by its contribution to data processing. In this view, humanity is not the pinnacle of creation but a step in a longer process: the creation of an all-encompassing data system into which our own value ultimately drains. It is, he argues, a religion in the making, complete with commandments like maximise data flow and connect everything to everything.

What makes the idea more than science fiction is how naturally we already obey it. We record our runs, log our heartbeats, share our meals, and consult our feeds before we trust our own judgement. Every time we let an app choose a route, a song, or a partner, we quietly concede that an external algorithm may know us better than we do. Harari notes that the humanist injunction to listen to yourself is being replaced, almost imperceptibly, by a new one: listen to the algorithm, feed it your data, and let it decide.

Read straight, Homo Deus can sound like a prophecy, but that's a misreading Harari works to prevent. The book's deeper subject isn't gadgets or lifespans; it's authority — who, or what, gets to decide what matters. Humanism answered: the individual. Harari's argument is that this answer is being quietly withdrawn, not by tyrants but by the ordinary logic of biotech and data, and that we haven't noticed we're changing our minds. What he offers is less a forecast than a warning issued as a set of open questions.

The first question is about consciousness itself. If machines can outperform us without any inner experience, does experience still count, or was it always beside the point? Harari refuses to resolve this. He simply notes that a civilisation which decides consciousness is dispensable would be a profoundly different place, and that we are drifting toward that decision without a vote. The mind that humanism worshipped may survive as a curiosity rather than a throne.

The book ends where it began, with a species that has run out of its oldest enemies and gone looking for new frontiers. Having beaten famine, plague and war down to manageable size, Harari argues, we are turning our powers inward — extending life, tuning happiness, redesigning the raw material we're made of. The move from surviving to upgrading is not a wild leap but the next reasonable step for a species that never rests inside a solved problem. The upgrade is not coming from outside us; it is us, following our own success to its edge.