How Homo Sapiens Ruled the World: 3 Key Evolutionary Secrets
Growing up, I was fascinated by stories explaining why humans rule the world. Movies and books offered various explanations for why humans rule the world, often suggesting we were the “chosen species” gifted with superior rationality or unique communication skills. As someone who enjoys a good steak, I simply felt lucky to be born at the top of the food chain.
However, nature documentaries challenged this view. Monkeys use vocalizations to maintain social groups, ants use pheromones to organize complex societies, and dolphins possess sophisticated communication. If language and basic cooperation aren’t unique to us, was it our “rational brain” that secured our victory?
Neuroscience and psychology suggest otherwise. Our choices are deeply influenced by emotion-based memories, and we often succumb to immediate pleasures like doom-scrolling or junk food over rational long-term goals. So, if we aren’t purely rational, what is the real reason why humans rule the world? Books like Yuval Harari’s Sapiens offer profound answers.
1. The Survivor: Homo Sapiens vs. Other Humans
We often forget that Homo sapiens was just one of several human species. The human genus evolved in East Africa about 2.5 million years ago.
Various human species coexisted, including Homo erectus in Asia and the formidable Homo neanderthalensis (Neanderthals) in Europe. Neanderthals were larger, more muscular, and better adapted to cold climates than our ancestors. Early sapiens, with fragile skin and weak natural weapons, were often prey.
The turning point was controlling fire about 800,000 years ago, propelling humans up the food chain. Yet, about 10,000 years ago, Homo sapiens became the last human species standing. How did we outcompete our stronger siblings?
2. The Secret of Why Humans Rule the World: Abstraction and Myths
The ultimate secret to why humans rule the world lies in a unique cognitive ability: abstraction. While chimpanzees can form stable groups of about 50, early sapiens could form collectives of 150 or more.
As discussed in books like Seven and a Half Lessons About the Brain, sapiens developed the ability to imagine and believe in things that do not physically exist. This capacity for abstraction allowed us to create “shared myths.”
Think about it: nations, human rights, money, and laws do not have a physical existence like a rock or a tree. They exist only in our collective imagination. Yet, this “social reality” enables millions of strangers to cooperate effectively. We pay taxes and obey laws because we collectively believe in the myth of the “nation.” This ability to organize on a massive scale is the fundamental reason why humans rule the world today, separating us from Neanderthals and other animals.
3. The Agricultural Revolution and Hierarchy
This capacity for massive cooperation led to the Agricultural Revolution. While it allowed for population booms and settled city-states, it was a double-edged sword for the individual.
Ancient hunter-gatherers were generalists with exceptional physical and mental agility needed for survival. Agriculture turned most humans into specialized laborers, tending crops in repetitive routines. Society became like a vast factory, increasing overall wealth but creating deep information asymmetry and rigid class structures.
Surplus food allowed a small elite (kings, priests) to monopolize information and myths, concentrating wealth while the majority toiled. This structure persisted through the Industrial Revolution into today’s Information Age.
A split illustration comparing free-roaming hunter-gatherers on the left with laboring farmers under a hierarchy on the right.Recognizing Our “Social Reality”
This isn’t just history; it’s biology. The hormone serotonin, which regulates feelings of superiority and inferiority, plays a role in maintaining social hierarchies across many species. True biological equality is difficult when our brains are wired to compare status.
Humans used their imagination to formalize these animalistic hierarchies into extreme, legally sanctioned systems. Realizing this “social reality” was a turning point for me. I saw my former military service not just as noble “defense,” but also as a sacrifice of lower-class individuals to maintain a hierarchy.
Understanding why humans rule the world—through the power of shared myths and abstraction—is the first step toward recognizing the “social reality” we live in. Only by seeing the system for what it is can we begin to struggle for control over our own lives.
Further Reading for Context
댓글 남기기