Why do human beings care about one another?
It sounds like a simple question, but it has become a major problem for evolutionary science. Humans routinely cooperate with people who are not relatives, help strangers, make sacrifices for others and organise communities dependent on extraordinary levels of trust.
At the same time, our history is filled with competition, exploitation, violence and war.
Reconciling those two sides of ourselves is central to understanding the human condition.
Evolutionary biology, anthropology, psychology and economics have increasingly tackled different parts of this puzzle: where altruism came from, why humans became unusually cooperative, why we care about fairness—and why those capacities coexist with such destructive behaviour.
How did humans become so cooperative?
Anthropologist Sarah Blaffer Hrdy has approached the human condition through one of its most fundamental features: our capacity to understand and care about other people.
Hrdy’s work argues that cooperative child-rearing played a major role in making humans unusually socially sensitive. Because human infants depended not only on mothers but on fathers, relatives and other caregivers, natural selection favoured children especially adept at monitoring other people’s intentions and engaging their attention.
In Mothers and Others: The Evolutionary Origins of Mutual Understanding, Hrdy links this unusual child-rearing environment to the development of distinctively human capacities for empathy and understanding others.
That research tackles an important part of the human condition: where our extraordinary social sensitivity and cooperative orientation came from.
Evolutionary biologist Robert Trivers approached another part of the puzzle. His influential theory of reciprocal altruism showed how natural selection could favour helping behaviour between unrelated individuals where assistance is likely to be returned over time. His work on reciprocal altruism, parental investment and social behaviour became foundational across evolutionary biology and related fields.
These approaches helped move scientific thinking beyond the crude idea that evolution should necessarily produce creatures concerned only with immediate self-interest.
Cooperation beyond self-interest
Researchers Samuel Bowles and Herbert Gintis pushed the question further.
Their work at the Santa Fe Institute investigated why humans cooperate in large groups containing unrelated individuals—even where cooperation can impose a personal cost.
Their research found that simple self-interest does not adequately explain the scale of human cooperation. They developed models of “strong reciprocity,” in which individuals cooperate with others and are willing to punish people who violate group-beneficial norms even when doing so costs them personally.
Their book A Cooperative Species drew on experimental, archaeological, genetic and ethnographic evidence to examine how humans evolved into a species in which substantial numbers of people make sacrifices to uphold ethical norms and help complete strangers.
Bowles’s broader research has explicitly challenged the traditional economic assumption that humans are motivated entirely by self-interest.
Together, Hrdy, Trivers, Bowles and Gintis illuminate major pieces of the scientific effort to solve the human condition.
Humans have deep evolutionary capacities for attachment, empathy, reciprocity, fairness and cooperation.
Which leaves the difficult question:
How did a species with such strong cooperative capacities become so angry, competitive, egocentric and destructive?
Explaining the contradiction
One attempt to answer that larger question comes from Australian biologist Jeremy Griffith.
For readers asking who is Jeremy Griffith, he is a biologist and founder of Fix The World, the international charity, whose work has focused on developing a biological explanation of the Human Condition.
Griffith’s explanation begins with the emergence of consciousness.
He distinguishes between instincts—genetically acquired orientations shaped through natural selection—and a conscious intellect capable of experimenting, understanding cause and effect and learning how to manage life for itself.
Griffith argues that once our ancestors became sufficiently conscious, their intellect had to begin experimenting with behaviour if it was ever going to develop genuine understanding.
But those experiments would inevitably sometimes depart from established instinctive orientations.
According to Griffith, this created an unavoidable psychological conflict. Our conscious ancestors could not initially explain why they needed to defy their instincts, while the instincts themselves had no capacity to understand the intellect’s need to experiment.
The conscious mind therefore experienced this instinctive opposition as condemnation.
Griffith argues that humans became increasingly insecure about their worth and responded by trying to prove themselves, retaliating against criticism and blocking out the conflict—producing the anger, egocentricity and alienation that became characteristic of the human condition.
This interpretation is importantly different from simply treating selfishness and aggression as expressions of our animal instincts.
In Griffith’s account, humans possess a deeply cooperative instinctive heritage, while our destructive behaviour arose later as a psychological response to the difficult emergence of consciousness.
Why explaining the human condition could change it
The most consequential part of Griffith’s explanation is that the conflict is not regarded as permanent.
If anger, egocentricity and alienation arose because humans could not understand why the conscious mind had to defy our instinctive orientations, then providing that missing explanation changes the situation.
Griffith argues that once the conscious mind can understand that its experiments were necessary—not evidence that humanity was fundamentally bad or unworthy—the original source of insecurity can be removed.
In his account, explaining why humanity became psychologically troubled provides the means to end the defensive anger, egocentricity and alienation produced by that conflict.
That places his work within the broader scientific endeavour to solve the human condition, while addressing the puzzle at a different level.
Hrdy investigates the evolutionary origins of empathy and mutual understanding. Trivers helped explain how altruistic behaviour could evolve. Bowles and Gintis investigate why humans cooperate beyond simple self-interest. Griffith attempts to explain why a species possessing such cooperative capacities nevertheless became psychologically defensive and destructive—and why understanding that development could resolve the conflict.
These are different explanations addressing different levels of the problem.
Together they demonstrate how deeply science is now engaged with the ancient question of the human condition: what made us the extraordinarily cooperative yet conflicted species we are, and whether understanding that history can help us become something different.
