Saturday, February 24, 2018

“Homo Deus: A Brief History of Tomorrow” by Yuval Noah Harari


This is the sequel to HomoSapiens by the same author. This is also a continuation of Harari’s train of thought from what is happening in the present, to what will happen in the future. He opens the book saying that in the past, man’s goal has been to eradicate famine, disease, and poverty. Well most of the world is free from this now. So man’s goals are changing, and instead we are focusing on achieving immortality and becoming godlike. Not in the sense that we are omniscient, but in the sense that we have immense power and control over everything surrounding us.

Of course this all builds directly off of his previous work. As a result, to me it felt like there was a lot of recapping in the first half of the book. He went through some concepts that he already covered, but that continue to be relevant, for those that needed a refresher of his previous book or those that didn’t read it. Which is good, but my mind was less blown the second time around.

The really interesting part is when he gets to his discussion of humanism. That is, the idea that humans are individuals with a unique inner voice, and that there is no God, only us and what we choose to do with ourselves. That there is something special about humans and consciousness that nothing else has. However, this view is brought into conflict by the expansion of science and technology. Increasingly, we are not organisms but rather algorithms that take in sensory information and put out specific reactions to them. Consciousness is also proven to be accessory as more and more intelligent machines do everything that we can, just without consciousness.

Harari being himself, he takes this idea and pushes it to the limit. The world he describes is one ruled by data and numbers, where we are not making any decisions for ourselves, but instead letting machines who know all of our feelings make choices for us. It sounds far-fetched, but Harari constantly uses examples from the present day to demonstrate that we are indeed already on the path to this. Facebook records our likes, machines can write beautiful symphonies, armbands track our heart rate and blood pressure already, it is not such a big leap to imagine this happening.

Throughout this whole book Harari refrains from discussing whether these changes are good or bad. He ignores that question entirely and leaves that up to the reader. However at the end, he leaves us with three questions regarding the future of society. Are all organisms merely algorithms, and as a result is life data? Is intelligence or consciousness more valuable? Finally, what will happen when algorithms know us better than we know ourselves? At the very end of the novel, Harari leaves it up to us to decide how we feel about this as a future.

One interesting aspect that he does not discuss though is determinism. Sure he discusses free will and how as algorithms we have a distinct lack of it, but he does not go into manifestations of a society based on determinism. To be fair, there are limited practical aspects of determinism, but it would have been interesting to see it mentioned.

Like Homo Sapiens this is a mind-blowing mammoth of a novel. Harari masterfully explains just where life is headed, and then leaves it up to us to determine how we feel about it. Part philosophy, psychology, anthropology, and biology it combines several disciplines to portray his ideas about the world and life. As a result, nearly anyone can pick it up and follow what he is discussing, and see just how data proposes to overtake our lives.

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