Are humans naturally selfish, altruistic, or something else according to evolutionary theory?

The conversation does not settle for either of the two familiar answers. It does not conclude that humans are selfish underneath a veneer of niceness, and it does not conclude that we are naturally altruistic. Instead, the host, Barry Lam, works toward a third possibility: that evolution shaped us to praise and value altruism in others without shaping us to actually be altruistic ourselves.

The reasoning goes like this. If evolution rewards traits that help genes get copied, then a taste for associating with generous, trustworthy people would be useful. You want generous people around you: as partners, allies, and friends. Praising altruism, admiring it, and rewarding it in others pays off even if you never practice it yourself. So natural selection could easily produce creatures who prize a virtue in others that they do not consistently display in themselves. That gap between what we praise and what we do is what Lam names as the trait evolution actually explains. He calls it hypocrisy, and he distinguishes it carefully from both selfishness, which would mean caring only about your own advantage, and selflessness, which would mean genuinely valuing others' welfare over your own.

This reframes the usual debate. The usual debate asks whether an act like donating a kidney to a stranger can be explained by evolutionary self-interest at all, or whether it counts as evidence of real, evolved altruism. The conversation with evolutionary psychologist Michael McCullough treats that question directly, but Lam's own conclusion moves past it. He is not asking whether any single act is selfish or selfless. He is asking what general disposition evolution built into us, and his answer is a disposition to value a trait in others that we do not reliably enact.

Philosopher Kieran Setiya adds an important qualification. Human motivational nature is not fixed for all time. What we are moved to do, and how consistently we act on what we praise, can change historically. So even if hypocrisy is a good description of an evolved starting point, it is not necessarily a permanent verdict on human character. The gap between valuing altruism and practicing it is not something evolution locks in place forever.

What changes if you take this seriously. It changes what you expect from yourself and others when someone acts less generously than they claim to admire. It is not automatic proof of moral failure or of a purely selfish nature. It may be the ordinary condition of a creature that evolved to prize a virtue for the company it attracts, not necessarily to embody it. That does not excuse the gap. It does explain why closing it takes real effort, and why moral improvement is a matter of aligning conduct with the values you already hold, rather than discovering some hidden well of natural goodness or badness underneath.

One usable question follows from this. Where in your own life do you praise a trait in others, generosity, courage, honesty, that you do not consistently practice yourself. Naming that gap honestly is a more useful starting point than deciding, once and for all, whether you are naturally selfish or naturally good.