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The
Mystery of Homo Sapiens
By Alan F. Alford
WHERE
did we come from? Are we the product of a Divine Creation? Did
we evolve through natural selection? Or
is there another possible
answer?
Introduction
In
November 1859, Charles Darwin published a most dangerous idea – that
all living things had evolved through a process of natural
selection. Although there was almost no mention of mankind
in Darwin’s
treatise, the implications were unavoidable and led to a
more radical change in human self-perception than anything
before
it in recorded
history. In one blow, Darwin had relegated us from divinely-created
beings to apes – the culmination of evolution by the
impersonal mechanism of natural selection.
But
are the scientists right in applying the theory of evolution
to the strange
two-legged hominid known as ‘man’? Charles
Darwin himself was strangely quiet on this point but his
co-discoverer Alfred Wallace was less reluctant to express
his views. Wallace
himself was adamant that ‘some intelligent power
has guided or determined the development of man.’
One
hundred years of science have failed to prove Alfred
Wallace wrong. Anthropologists have failed miserably to
produce fossil
evidence of man’s ‘missing link’ with
the apes and there has been a growing recognition of
the complexity of organs
such as the human brain. Such are the problems with the
application of Darwinism to mankind that Stephen Jay
Gould – America’s
evolutionist laureate – has described human evolution
as an ‘awesome improbability’.
In
Search of the Missing Link
Speciation – the separation of
one species into two different species – is defined as
the point where two groups within the same species are no longer
able to inter-breed. The British
scientist Richard Dawkins has described the separation
quite poetically as ‘the long goodbye’.
The search for the missing link between man and the
apes is the search for the earliest hominid – the
upright, bipedal ape who waved ‘a long goodbye’ to
his four-legged friends.
I
will now attempt to briefly summarise what is known about human
evolution.
According
to the experts, the rivers of human genes and chimpanzee genes
split from a common ancestral
source
some time between
5 and 7 million years ago, whilst the river of
gorilla genes is generally
thought to have branched off slightly earlier.
In order for this speciation to occur, three
populations of
common ape
ancestors (the future gorillas, chimpanzees and
hominids)
had to become
geographically separated and thereafter subject
to genetic drift,
influenced by
their different environments.
The
search for the missing link has turned up a number of fossil
contenders, dating from around
4 million
years ago,
but the
picture remains very incomplete and the sample
size is too small to draw
any statistically valid conclusions. There
are, however, three contenders for the prize of the
first fully
bipedal hominid,
all discovered in the East African Rift valley
which slashes through
Ethiopia, Kenya and Tanzania.
The
first contender, discovered in the Afar province of Ethiopia
in 1974, is named
Lucy,
although
her more scientific
name
is Australopithecus Afarensis. Lucy is
estimated to have lived
between 3.6-3.2 million
years ago. Unfortunately her skeleton was
only 40 per cent complete and this has resulted
in controversy regarding whether she was
a true biped and whether in fact ‘she’ might
even have been a ‘he’.
The
second contender is Australopithecus Ramidus,
a 4.4 million year old pygmy chimpanzee-like
creature, discovered
at Aramis
in Ethiopia by Professor Timothy White
in 1994.
Despite a 70 per cent
complete skeleton, it has again not been
possible to
prove categorically whether it had two
or four legs.
The
third contender, dated between 4.1-3.9 million years old, is
the Australopithecus
Anamensis,
discovered at
Lake Turkana
in Kenya
by Dr Meave Leakey in August 1995.
A shinbone from Anamensis has been used
to back up
the claim that
it walked on
two feet.
The
evidence of our oldest ancestors is confusing because they do
not seem
to be
closely related
to each other.
Furthermore, the inexplicable lack
of fossil evidence for the preceding
10 million
years has made it impossible to confirm
the exact separation date of these
early
hominids from
the four-legged apes.
It is also important
to emphasise that many of these finds
have skulls more like chimpanzees
than men.
They may be the
first apes
that walked
but, as of 4
million years ago, we are still a
long way from anything that
looked even
remotely human.
Moving
forward in time, we find evidence of several types of early man
which
are equally
confusing.
We have the
1.8 million
year old
appropriately named Robustus, the
2.5 million year old and more lightly
built
Africanus,
and the 1.5
to 2 million
year
old Advanced
Australopithecus. The latter, as
the name suggests, is more man-like
than
the others
and is sometimes
referred to as ‘near-man’ or
Homo habilis (‘handy man’).
It is generally agreed that Homo
habilis was the
first truly man-like being which
could walk efficiently and use
very rough stone tools.
The fossil evidence does not reveal
whether rudimentary speech had
developed at this
stage.
Around
1.5 million years ago Homo erectus appeared on the
scene.
This hominid
had a considerably
larger brain-box
(cranium) than its predecessors
and started to design and
use more
sophisticated
stone tools. A wide spread of
fossils indicates that Homo erectus groups
left Africa and
spread across
China, Australasia
and
Europe
between 1,000,000-700,000 years
ago but, for unknown reasons,
disappeared altogether
around
300,000-200,000
years ago.
There is little doubt,
by a process of elimination,
that this is the line from which Homo
sapiens descended.
The
missing link, however, remains a mystery. In 1995, The Sunday
Times summarised
the
evolutionary evidence
as follows:
The
scientists themselves are confused. A series of recent
discoveries
has forced them to tear
up the simplistic
charts on which they
blithely used to draw linkages...
the classic family tree delineating man’s
descent from the apes, familiar to us at
school, has given way to the concept of
genetic islands. The bridgework
between them is anyone’s guess.
As
to the various contenders speculated
as mankind’s
ancestor, The Sunday Times stated:
Their
relationships to one another remain clouded in mystery
and nobody has conclusively
identified
any
of them as the early
hominid
that gave
rise to
Homo sapiens.
In
summary, the evidence discovered to date
is so sparse that a few more
sensational
finds will
still
leave
the scientists clutching
at straws.
Consequently mankind’s
evolutionary history is likely
to remain shrouded in mystery
for the foreseeable future.
The
Miracle of Man
Today,
four out of ten Americans find it difficult to believe
that humans
are related
to the apes.
Why is this
so? Compare
yourself
to a chimpanzee.
Man
is intelligent, naked and
highly sexual – a
species apart from his
alleged primate
relatives.
This
may be an intuitive observation but
it is actually
supported
by scientific study.
In 1911, the anthropologist
Sir Arthur
Keith listed
the anatomical
characteristics peculiar
to each of
the primate species,
calling them ‘generic characters’ which
set each apart from the
others. His results were
as follows: gorilla 75;
chimpanzee 109; orangutan
113; gibbon 116; man
312. Keith thus showed
scientifically that mankind
was nearly three times
more distinctive than
any other ape.
Another
scientist to take this approach was
the British
zoologist
Desmond Morris.
In
his book,
The Naked
Ape, Desmond Morris
highlighted the
amazing mystery
of mankind’s ‘missing
hair’:
Functionally,
we are stark
naked and our
skin is fully
exposed
to the outside
world.
This
state of affairs
still has to
be explained, regardless
of how
many tiny hairs
we can count under a
magnifying lens.
Desmond
Morris contrasted Homo sapiens
with 4,237 species of
mammals,
the vast majority
of which
were hairy
or partly haired.
The only
non-hairy
species were those
which lived underground
(and thus
kept warm without hair), species
which
were aquatic
(and
benefited
from streamlining),
and armoured
species such
as the armadillo (where
hair would
clearly be
superfluous).
Morris
commented:
The
naked ape [man] stands alone, marked
off
by his nudity
from
all
the thousands of hairy,
shaggy
or
furry
land-dwelling mammalian
species...
if
the hair has to go,
then
clearly there must
be
a powerful reason
for
abolishing it.
Darwinism
has yet to produce
a satisfactory answer
as to
how and why
man lost
his hair. Many
imaginative theories
have been suggested,
but so
far no-one
has come up
with a
really acceptable
explanation. The
one conclusion
that can
perhaps be
drawn, based
on the principle
of gradiented change,
is that man spent
a long time
evolving, either
in a very hot
environment or
in water.
Another
unique feature
of mankind
may provide us with
a clue to
the loss of body
hair. That feature
is sexuality. The
subject was
covered in
juicy detail
by Desmond Morris,
who highlighted unique
human features
such as extended
foreplay, extended
copulation and
the orgasm.
One particular
anomaly is
that the human
female is
always ‘in heat’, yet she can only conceive
for a few days each month.
As
another scientist,
Jared Diamond,
has pointed
out, this
is an
evolutionary enigma
that cannot
be explained
by natural
selection:
The
most hotly
debated problem
in the
evolution of
human reproduction
is to
explain why
we nevertheless
ended up
with concealed
ovulation, and
what good
all our
mistimed copulations
do us.
Many
scientists have
commented also
on the
anomaly of
the male
penis, which
is by
far the
largest erect
penis of
any living
primate. The
geneticist Steve
Jones has
noted it
as a
mystery which
is ‘unanswered by science’,
a point which is echoed by Jared Diamond:
...
we descend
to a
glaring failure:
the inability
of twentieth-century
science to
formulate an
adequate Theory
of Penis
Length... astonishing
as it
seems, important
functions of
the human
penis remain
obscure.
Desmond
Morris described
man as ‘the sexiest primate alive’, but
why did evolution grant us such a bountiful gift? The whole
human body seems to be perfectly designed for sexual
excitement
and pair bonding. Morris saw elements
of this plan in the enlarged breasts of the female, the
sensitive ear lobes and lips, and a vaginal angle that
encouraged intimate face to face copulation. He
also highlighted our abundance of scent-producing glands,
our unique facial mobility and our unique ability to
produce
copious tears – all
features which strengthened the exclusive emotional
pair-bonding
between male and female.
This
grand design
could not
be imagined
unless humans
also lost
their shaggy
coat of
hair and
so it
might seem
that the
mystery of
the missing
hair is
solved. Unfortunately,
it is
not that
simple, for
evolution does
not set
about achieving
grand designs.
The Darwinists
are strangely
silent on
what incremental
steps were
involved, but
however it
happened it
should have
taken a
long, long
time.
There
are three
other interesting
anomalies
of ‘the naked ape’ which
are also worthy of note. The first is the appalling
ineptitude of the human skin to repair itself.
In the context of a move
to the open savanna, where bipedal man became a
vulnerable target, and in the context of a gradual
loss of protective hair, it seems inconceivable
that the
human skin should have become so fragile relative
to our primate cousins.
The
second
anomaly
is
the
unique
lack
of penis
bone
in
the male.
This
is
in complete
contrast
to
other
mammals,
which
use
the
penis
bone to
copulate
at
short
notice.
The
deselection
of this
vital
bone
would
have
jeopardised
the
existence
of
the
human
species
unless
it took
place
against
the
background
of a
long
and
peaceful
environment.
The
third
anomaly
is
our
eating
habits.
Whereas
most
animals
will
swallow
their
food
instantaneously,
we
take
the
luxury
of
six
whole
seconds
to
transport
our
food
from
mouth
to
stomach.
This
again
suggests
a
long
period
of
peaceful
evolution.
The
question
which
arises
is
where
this
long
and
peaceful
evolution
is
supposed
to
have
taken
place,
because
it
certainly
does
not
fit
the
scenario
which
is
presented
for
Homo
sapiens.
Nor
have
Darwinists
explained
adequately
how
the
major
changes
in
human
anatomy
were
achieved
in
a
time
frame
of
only
6
million
years...
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