An Introduction: A Rebuttal to My Own Anxieties
In a previous post, “Brilliant thinking is rare…,” I explored a deep anxiety about the long-term biological future of humanity. The premise was supported by modern genetic research. While any two humans share 99.9% of their DNA, this often-cited fact obscures a deeper truth. Polygenic Scores (PGS), which aggregate the tiny effects of thousands of genetic variants from the remaining 0.1%, scientifically demonstrate that individuals can be born with significantly different statistical potentials for complex cognitive traits. Therefore, my inquiry was not incorrect. The concern that certain demographic trends could pose a risk to our species’ biological ‘hardware’ was, and is, intellectually sound.
Yet after publishing it, a profound doubt began to form. I found myself drawn back to my very first post, rereading my own descriptions of humanity’s great technological leaps—fire, writing, the computer. Was I so captivated by the slow, grinding evolution of our biological hardware that I was missing the real story? Could it be that this technological ascent is the true human evolution?
The question filled me with a mixture of intellectual dread and exhilarating hope. Dread, at the thought that my framework might be flawed. Hope, because I felt I might have stumbled upon a clue to the ultimate question that drives this blog: why our evolutionary path is so radically different from that of any other animal. This propelled me into an intense period of research. As I delved into the works of past thinkers, I realized I was not alone. Sages had already grappled with these very questions through their own anguish and inquiry. This post is the record of that journey, a chronicle of my research and my epiphanies, written to share with others.
The secret to human success, I am now convinced, does not lie in how exquisitely our biological hardware has been refined. It lies in the fact that we escaped the slow shackles of our genes and began to upgrade ourselves through cultural software: ideas and technology. The truly important task, therefore, is not to obsess over the genetic composition of our species, but to ask a more urgent question: how can we design a society that maximizes the output of this second, unleashed engine—the engine that truly defines our future?
Redefining Evolution: Darwin’s Universal Algorithm
To see the world from this new perspective, we must first redefine the word ‘evolution’ itself. To borrow from the renowned philosopher and cognitive scientist Daniel Dennett, ‘evolution’ is not a concept confined to biology. It is a universal Darwinian algorithm—a substrate-neutral process that operates wherever three conditions are met: Variation, Selection, and Replication/Heredity.
If the replicator of biological evolution is the ‘gene,’ then the replicator of cultural evolution is the ‘idea’ or the ‘technology’ itself. Humanity’s greatest innovations all followed this Darwinian algorithm, and like biological evolution, they dramatically improved our productivity and odds of survival.
- Fire: Initially, various methods for making fire (friction, flint-knapping, etc.) were attempted (variation). The more reliable and efficient methods were widely adopted (selection), and the technique was passed down through generations via teaching (replication). This single innovation solved the problem of externalizing the arduous process of digestion, supplying more energy to the brain and leading to monumental evolutionary consequences, including changes to our diet and even our brain capacity.
- Writing: The desire to record information gave birth to diverse systems like pictograms, cuneiform, and alphabets (variation). Among them, phonetic alphabets, being easier to learn and capable of encoding more information efficiently, faced strong selective pressure and spread globally (selection and replication). This innovation solved the problem of the limits of human memory and the inaccuracy of oral tradition, enabling the accumulation and transmission of complex knowledge and exponentially increasing societal productivity.
- The Steam Engine & The Computer: James Watt’s steam engine (1776) and the early computer ENIAC (1945) were born from countless preceding technologies and failed designs (variation). The market chose more efficient and powerful designs (selection), and those technologies spread worldwide through standardized manufacturing and education (replication). The steam engine solved the limits of human physical strength; the computer solved the limits of mental calculation, ushering in new eras of mass production and information processing.
- Google’s Search Engine: In the early internet, numerous search methods existed, such as Yahoo and AltaVista (variation). However, the superior idea of ‘PageRank,’ introduced by Google in 1998, received the overwhelming endorsement of users and has now become the global standard for information access (selection and replication). This solved the problem of information overload and asymmetry, dramatically reducing the time it takes to find necessary knowledge and accelerating the pace of research and innovation in all fields.
The fact that all our wondrous progress can only be explained by ‘cultural evolution’ is supported by the scientific evidence that our hardware has remained stagnant. The latest ancient genomics research shows that when comparing the DNA of people from the Roman era 2,000 years ago with that of modern humans, there have been no statistically significant directional ‘upgrades’ in the key genes related to brain function or cognitive ability. Furthermore, it is the consensus in archaeology that the average human brain size peaked in the late Paleolithic era (around 20,000-30,000 years ago) and has actually decreased by about 10% during the Holocene, the very period of rising social complexity. The ‘Flynn Effect’—the steady rise in IQ scores observed in the 20th century—is also impossible to explain by the speed of genetic evolution. It is the result of better nutrition, education, and a more complex environment allowing the potential of our brain’s hardware to be fully realized. In short, any changes to the genetic ‘blueprint’ have been minimal; it is the ‘materials’ (nutrition) and the ‘operating system’ (education, environment) that have improved.
Yet this very conclusion forces us to ask a deeper question: what, precisely, is the engine of this cultural evolution? Historically, these leaps—these technological innovations—were discovered or created by a very small number of individuals. The rest of humanity, in the same generation and those that followed, enjoyed these innovations as a birthright, imitating and using them as if they were their own abilities. At each of these moments, humanity as a whole “evolved.” This realization led me back to my second post, making me understand that its core anxiety was not wrong, merely incomplete. The engine of humanity’s cultural evolution is fueled by its high-cognition individuals—though a crucial distinction must be made. This refers not to the ability to master and apply complex, established knowledge, but to the much rarer creative and engineering capacity to invent new paradigms and produce ‘Zero to One’ innovations.
The Second Engine: How Cultural Evolution Works
Understanding how cultural evolution developed as a scientific theory, and what its core driver is, is crucial. The door to this discussion was opened by Richard Dawkins’s ‘memetics’ (1976), a radical theory that proposed ideas—or ‘memes’—were selfish replicators, like genes, using human minds as vehicles for their own propagation. While this powerful analogy failed to become a scientific theory due to its conceptual ambiguity, it was ‘Dual Inheritance Theory’ (DIT), systemized in the 1980s, that overcame these limits and elevated cultural evolution into the realm of science.
The true greatness of DIT lies in how it overcame the scientific limitations of memetics. It shifted the focus from the unanswerable philosophical question, “What is a meme?” to a testable scientific one: “How does culture spread?” By proposing concrete psychological mechanisms, DIT transformed the study of cultural evolution into a true scientific domain. Here, we witness a stunning intellectual convergence. Decades after the philosopher René Girard offered his fundamental insight into human nature with ‘Mimetic Desire’ in Deceit, Desire, and the Novel (1961), scientists in DIT, starting in the 1980s, began to scientifically model and verify this unique human capacity for imitation under new names. Girard’s theory posits that our desires are not our own but are copied from others; we learn what to want by observing a model. The scientific mechanisms of DIT, such as ‘prestige bias’ (copying the successful) and ‘conformist transmission’ (copying the majority), can be seen as the empirical formalization of Girard’s philosophical insight. Girard showed how our unique mimetic ability creates all of society’s order and conflict, and DIT scientifically explained how this becomes the core engine making the replication of cultural evolution possible—an immense power that allows the ‘mutational’, genius innovations of a few high-cognition individuals to lead effectively to the evolution of all humankind. Ultimately, the path to escaping the destructive aspects of this ‘mimetic desire’ and channeling it toward creation is deeply connected to the ‘Zero to One’ concept.
When discussing Dual Inheritance Theory, the conversation often centers on the ‘coevolution’ feedback loop. Yet, it is crucial to understand that not all cultural evolution leads to biological evolution. Rather, the most dramatic examples of gene-culture coevolution serve merely as the ultimate proof of how powerful our ‘software engine’ is—so powerful that it can, at times, rewrite our biological hardware. The use of fire is a prime case. The cultural innovation of ‘cooking’ altered our digestive organs and supplied the energy that allowed our brains to grow, thereby influencing our genetic evolution.
The Tree of Evolution: The Collective Brain and the Mutant Branch
The fundamental reason human cultural evolution is different from that of other animals lies in its ‘cumulativeness.’ Joseph Henrich’s concept of the ‘Collective Brain’ offers a powerful explanation, positing that innovation is not the product of a lone genius in a vacuum, but arises from the process of knowledge being gathered and recombined among a vast network of interconnected people. The power of this Collective Brain is determined by two key factors: its size (the number of minds in the network) and its connectivity (how efficiently those minds can exchange information). A larger and more interconnected network allows more ideas to be generated, shared, and preserved, making it the shared cultural knowledge that makes individual genius possible.
This insight is profound, yet it prompts a deeper question: where do the truly novel, category-creating ideas—the ‘Zero to One’ leaps—originate within this network? This is where I believe my own hypothesis complements Henrich’s work. To me, the whole of human evolution is like a single, massive tree. This tree is the Collective Brain—the trunk and branches built over millennia from the accumulated knowledge of our ancestors.
The great innovators—the Einsteins, the Newtons, the da Vincis—are the mutant branches of this tree. They are not separate from it; they draw their nutrients from every part of the trunk and root system. But they use that collective energy to stretch towards the sun in a direction no other branch has before. The ‘Zero to One’ innovation is the fruit that grows only on this unique, mutational branch.
But this is not the end of the story. The seeds from that fruit fall back to the ground, enriching the soil for the entire tree. The next generation of branches then grows from this newly fertile ground, taking that once-mutational innovation for granted as part of their very structure. This is the ‘Ratchet Effect’: the uniquely human, endless cycle where the fruit of the few becomes the foundation for all, enabling new, even more ambitious mutant branches to emerge in an unending process of evolution. This very partnership mirrors the ambition of this blog: to document my own long journey of studying the tree, and in doing so, to create a space where these records might serve as soil for other thinkers on their own quests.
Thanks to this partnership, the invention of writing (c. 3500 BCE) allowed knowledge to be transmitted across time and space, causing the ‘size’ of the collective brain to explode. The Internet (Google Search Engine, 1998) maximized its ‘connectivity’ by linking the world’s brains in real time. The ‘Tragedy of Tasmania’ (c. 10,000 years ago), where an isolated people forgot technologies like fishing after being cut off from the mainland, clearly shows how the tree withers when its branches are severed.
I personally believe that Artificial Intelligence (AI) in its many forms will become the next great nutrient for this tree. I single out Large Language Models (LLMs) in particular because, like the invention of writing or Google’s search engine, they directly enhance the Collective Brain itself. By helping ordinary people understand complex scientific concepts more easily and dramatically increasing the efficiency of information transmission and acquisition, LLMs can enable a leap in the collective intelligence of all humankind. A world where understanding special relativity takes far less effort than before is coming.
Conclusion: The Next Evolution and Our Task
Our future depends not on biological evolution, but on cultural evolution. The next stage of that evolution will undoubtedly be the expansion of our collective intelligence through AI. Yet, we must remember what truly fuels this engine. The great leaps of cultural evolution—the ‘mutational’ sparks of genius that create new value—have historically been ignited by a few high-cognition individuals. This brings me back full circle to my second post. I do not believe its premise was wrong, because nurturing the “mutant branches” that produce these innovations is, in fact, a critical factor.
However, in writing this third post, I have come to realize the systems we build are far more complex than I first imagined. Inherited wealth, for instance, can be a positive force, maximizing support for potential geniuses and funding the venture capital that drives our future. A social safety net can allow “mutant branches” to blossom, which might otherwise have withered due to a lack of resources in a purely capitalist world.
And yet, the negative consequences I explored remain real concerns. The unhappiness and mental illness fueled by mimetic desire and social polarization are undeniable challenges. Artificially altering the natural selective pressures I discussed in my second post could risk shrinking the very pool of future scientists and engineers who can solve these complex problems. A society that removes all existential threats risks a slide into complacency, where we all simply wait for others to innovate.
Through writing these first three posts, I have learned a great deal. My hope is that anyone reading them will feel similarly inspired to ask their own questions of the world. “Is further evolution fundamentally necessary for humanity?”
I want to answer this provocative question thus. When we consider the immense problems we face—the finite resources of our planet, climate change, an aging population, and the possible encounter with intellectual beings superior to ourselves—the answer is clear.
Yes. The evolution of humanity is not a choice, but an imperative for survival. And if that is the case, it implies a profound responsibility for each of us. We cannot afford to simply wait for and imitate the innovations of others. We must all strive to ignite the embers of cultural evolution ourselves. I believe the formula for how to do that lies within the pages of ‘Zero to One,’ the very book that sparked this journey—and that is where our exploration will continue.