A recent New York Times article discusses some developments in anthropology that shed light on the complex evolutionary origins of human behavior. Apparently, fundamental insights into human evolution can be gained just by watching how babies and adults interact:
In the view of the primatologist Sarah Blaffer Hrdy, the extraordinary social skills of an infant are at the heart of what makes us human. Through its ability to solicit and secure the attentive care not just of its mother but of many others in its sensory purview, a baby promotes many of the behaviors and emotions that we prize in ourselves and that often distinguish us from other animals, including a willingness to share, to cooperate with strangers, to relax one’s guard, uncurl one’s lip and widen one’s pronoun circle beyond the stifling confines of me, myself and mine.
The article goes on to discuss how cooperative parenting, such as sharing in the raising of village children, is a human behavior that is both common around the world and also built on social trust. Another key paragraph explains:
Dr. Hrdy wrote her book in part to counter what she sees as the reigning dogma among evolutionary scholars that humans evolved their extreme sociality and cooperative behavior to better compete with other humans. “I’m not comfortable accepting this idea that the origins of hypersociality can be found in warfare, or that in-group amity arose in the interest of out-group enmity,” she said in a telephone interview. Sure, humans have been notably violent and militaristic for the last 12,000 or so years, she said, when hunter-gatherers started settling down and defending territories, and populations started getting seriously dense. But before then? There weren’t enough people around to wage wars. By the latest estimates, the average population size during the hundreds of thousands of years of human evolution that preceded the Neolithic Age may have been around 2,000 breeding adults. “What would humans have been fighting over?” Dr. Hrdy said. “They were too busy trying to keep themselves and their children alive.”
In other words, during our species’ early formative years, the population density was so low that warfare between populations of humans was highly unlikely. Rather, cooperative behaviors were evolving; women who could leave their children in the care of others for a day could be more effective gatherers, for example. It seems that this cooperation and trust is built into our species today; for example, Dr. Hrdy notes in the article that humans operate with an implicit trust that other members of our species will not harm us as a matter of normal day-to-day behavior.
I’ve long objected to the overuse of the term “human nature.” Not because I doubt that humans have some characteristics that may be so universal as to be ascribed to an inherent human nature, but rather because the term is so often employed to present an incomplete observation in the guise of some sort of universal truth about Homo sapiens sapiens. Think about how often you have heard someone say, “It’s human nature to make war,” or, “we’ll never get rid of greed, it’s human nature,” or “it’s human nature to lie, steal, etc.” It seems to be a prop for pessimism, an excuse to doubt humanity’s potential, a reason to maintain the status quo in light of a fear of change.
The reality is, of course, that whatever nature that humans have inborn in us, or hard-wired, is extraordinarily intricate. Human beings are capable of warfare and destruction, but they are also capable of acts of heroism and compassion. I don’t want to belabor this rather obvious point — that human behavior and its origins are very complex — but it is good to keep that in mind, as one of the most common criticisms that secular humanists receive in the U.S. is that we somehow cannot have any kind of morality because it isn’t anchored in some sort of god or holy text. To someone like me, who was raised in a freethinking household and considers himself to be both a lifelong humanist and a moral person, this criticism is absurd. Just as absurd is the idea that humans have some sort of innate destructiveness that must be checked by the threat of hellfire. Secular humanists know that they have no such original sin and need no such external threat to hold it back. As humans we are already capable of functioning as a society without some invisible eye monitoring our behavior– it is what we evolved to do.
The world is far from a perfect place, and much ugliness persists. The story of this ugliness, of destruction and war, is as complicated as the road that we followed to our big brains and upright gait. But assuming that killing is so inherent in our nature as to be an immutable characteristic is to ignore a huge part of the story, a story that may be simply understood the next time you look upon an infant that is no relation to you but still feel the instinctual urge to protect that child as if it were your own.