The framework is evolutionary psychology, and its core insight is simple enough to state in one sentence. The human mind is not a blank general-purpose learning device. It is a collection of specialized psychological mechanisms, shaped by hundreds of thousands of years of natural selection, designed to solve problems our ancestors faced in the Paleolithic hunter-gatherer environment. These mechanisms are pre-installed. They develop in every human being regardless of culture. And they were built for a world that no longer exists.
Watch a newborn deer. Within minutes of birth it is on its feet, already running behavioral programs no one taught it. Humans arrive with equivalent pre-installed programs: the infant's cry that activates parental distress with a reliability no other sound can match, the toddler's terror of strangers right on schedule whether or not strangers have ever been a threat, the adolescent's consuming obsession with peer status at exactly the moment when your position in the group would have determined whether you survived. These are not learned behaviors. They are the firmware, pre-installed in every human being, activated and calibrated by experience but not created by it.
This is what I call the Paleolithic Paradox. Ancient firmware, modern world, predictable mismatch. And the mismatch resets with every birth. Every new human arrives with the same ancient equipment regardless of the century. There is no endpoint at which humanity outgrows the problem.
One clarification: this is not nostalgia for the Paleolithic world. That world could be harder, shorter, and more violent than what most readers will ever experience — but it was certainly slower paced, smaller in scale, and profoundly different from modern life in ways that matter for understanding why our programming misfires now. The claim is functional, not romantic. A system built for specific conditions will produce different results when those conditions change. That is all.
All human culture is an adaptation to, or an exploitation of, our evolved psychology.
This is the foundational claim from which everything else in this book follows.