CULTURE,ORIGINS OF
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of fitness, which can explain interesting features of
humanity. For example, because courtship displays
need only indicate fitness, belief systems could de-
velop that “work” even though they do not accu-
rately depict the world.
Causal events, triggers, and mechanisms.
Another approach is to isolate one or a few vari-
ables as causes for the development of culture.
Distinguishing human labor from animal behavior,
the nineteenth-century social scientist Friedrich En-
gels proposed production as the primary factor,
while Randall White and others suggest a trend to-
ward increased group size. Social groups com-
prised of more people required more complicated
social organization than do small, family-size
groups, creating demands on communication.
Michael Pfieffer has proposed an environmental
change as the causal event. Rick Potts argues that
the human innovation was to develop flexible cog-
nitive abilities to face regular climate changes.
Richard Klein argues that a single genetic mutation
completed the modern brain, triggering the human
capacity for culture. There is growing reason to
believe genes are only indirectly connected to phe-
notype, yet there is also evidence that one change
can make a dramatic difference. Michael Tomasello
believes that a new form of social cognition, the
ability to see other humans as intentional beings,
triggered cognitive-cultural co-evolution.
Cooperation, altruism, and love. Elliott Sober
and David Sloan Wilson argue in Unto Others
(1998) that self-giving behaviors may benefit a
group enough to compensate evolutionarily for any
harm caused to individuals within the group. And
Adrienne Zihlman points to the great importance of
mother-infant interaction in the development of pri-
mate sociality. This emotional closeness and com-
munication prepares individuals for culturally
based cooperation and self-giving better than if so-
ciety is, as alternative interpretations suggest, an
endless power struggle. For Catherine Key and
Leslie Aiello as well, cooperation defines humanity.
Blood relations. The developing human brain
came with great costs especially to females whose
reproductive strategy would have emphasized
helping offspring reach maturity. The primate male
strategy would have been to fertilize as many fe-
males as possible. Culture began, Chris Knight ar-
gues, when females obtained male energetic in-
vestment by confusing the males about the
female’s fertility state, thus tricking the males into
sticking around. Menstruation is an obvious clue to
pending fertility, and males, with only one thing
on their minds, would turn away from nursing fe-
males to more fertile females just when most
needed. Solution? Females could paint themselves
red and all would appear equally fertile.
Relevance to science-religion dialogue
Whatever else one may conclude, Knight’s pro-
posal suggests that human agency and purpose are
part of what needs to be explained. From this brief
survey of theories of cultural origins, it is clear that
human thought is probably not genetically deter-
mined in detail. And because cultural origins and
transmission are quasi-independent of genetics,
one can ask of an idea not just whether it spreads
genes but how well it describes the world. Humans
regularly create new ideas and pass them on non-
genetically. One implication is that, to the extent
values and virtues are culturally based, they do not
need to be explained by natural selection on genes.
It would still be valuable to know whether al-
truism and true other-regarding love can arise by
natural selection. John Polkinghorne and his col-
leagues have argued that love may be a deep fea-
ture of the universe itself, not just of human cul-
tural beliefs. The study of human cultural origins
may have something to contribute to this debate.
Understanding human cultural origins is also
important for the science-religion dialogue because
it raises important issues for understanding each of
these elements of culture. For example, to the ex-
tent that human culture and behavior are only
loosely tied to our genetic variation and to our
evolutionary history, the religious and scientific
quests could do more to put us in touch with a re-
ality outside of our individual subjective selves
than some existing models of human nature allow.
As another example, religion and ethics are very
likely human universals, originating early in human
cultural evolution. If love is a significant feature of
reality and to the extent that human culture
evolved out of cooperation and self-giving as Zil-
man suggests, religion and ethics could be more
central to and indicative of human culture than we
usually allow. Their origins could, in turn, be im-
portant in cultural origins. Could it be that the ori-
gins of the human religious, spiritual and ethical
sense was an essential piece in the puzzle of the
origins of human culture and so of humanity itself?