obvious
grouping mechanisms. Further, for the last several millennia, there is
overwhelming historical evidence that various groups have cooperated with and
competed against each other; often for the survival of a group’s identity or
its very existence for that matter. One need only search for current
descendants of the Carthaginian Empire to understand the implications of
among-group competition during recorded history. When Rome ultimately defeated Carthage on the battlefield, it took the extreme
step of wiping all evidence of its once great adversary from the face of the
earth and forcing its remnant survivors to scatter across the Roman Empire. While the physical representation of
those survivors still exists within the collective gene pool, their
representation in a social context no longer exists; it is extinct. So, since
there appears to be solid evidence for among-group selection during recorded
history, it also seems quite plausible that such mechanisms can be identified
with the human species from the time that it emerged as unique, where surviving
direct evidence of the competition is far less obvious.
The grouping
mechanisms of humans seem to follow an evolutionary track comparable to that of
the capabilities of the individual members of the species. Most basic is the
social grouping necessary to allow the development of the person from infancy
to adulthood. The infant child is incapable of supporting itself and, in
isolation, the infant places extreme demands on its mother, or to any adult the
child bonds to for elemental life support. In fact, it is highly likely that
the species could not have survived without social mechanisms in place to
support the mother and infant child, at least until the child is well past
infancy. The basic social grouping that is readily identifiable is the nuclear
family; mother, father, siblings and the extended family that can grow up
around this core through multi-generational association.
At some point in
its development, the family (or perhaps an extended family) reaches a threshold
of size due to the sustenance limitations within the ecosystem that the family
inhabits. That is, the physical interaction characteristics of the individuals
with each other and with the ecosystem can only support groups of a given size.
The makeup of the physical ecosystem obviously has a very significant impact on
the family, and the evolutionary environment presented to the establishment of
more complex groups. So, let’s look in a bit more detail at the groups that we
recognize within the human species.
The African Wild
Dog (Lycaon pictus) pup is born after a gestation period of 70 days. The
pup is weaned from its mother’s milk at about 10 weeks. At three months, the
mother and pups abandon the den and the pups begin to run with the pack. At 10
months of age, pups can kill easy prey and by 14 months they are fully capable
of fending for themselves. They can join the rest of the pack in bringing down
prey many times their own size. In comparison, during its first month, a human
baby can not support its own head and it can only see objects a few inches in
front of its face. It can mimic certain behaviors of another individual,
usually its mother, if they are observable. At three months it can roll from
its back to its side and it finally discovers its hands and feet. The skull of
the infant is segmented and loosely connected at birth, enabling the head to
deform as necessary in order to fit through the birth canal of the mother.
After birth, the skull segments become rigidly connected in place, and the
brain continues to grow. Its growth provides for a geometric expansion of
synaptic connections, a process that lasts until about 30 months. At this
point, the human infant has established a preponderance of the physical and
mental characteristics of the human species. The pup is an adult at one and a
half years while the infant is a fairly fully functional human at three years. However,
it will take another three to five years before the young human can effectively
care for itself within the wider world. It will be 14 to 18 years or so before
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