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There
has been a huge debate particularly over the last few years over
whether life
began through evolution or as a creation of God. The scientists tell us
there
is no God and everything that is, including all life, results only from
physical matter and some theologians tell us God in Heaven created
everything
in seven days. There seems to be no way the two might be able to come
together.
Either you believe one or the other.
We
all know of Charles Darwin, who wrote Origin of the Species and set up
the foundations
of the Theory of Evolution. Not so much is known about Alfred Russell
Wallace,
whom some people say equally deserves to be known as founding the
Theory of
Evolution. Darwin and Wallace wrote a very large number of letters to
each
other discussing various aspects of evolution over many years. Like Darwin, Wallace
travelled
to many exotic locations around the world collecting specimens and
forming his
ideas own on natural selection. It was only when Charles Darwin heard
that
Wallace was about to publish a book on natural selection that Darwin published
his now famous book.
What
is also interesting about Alfred Russell Wallace is that he was also a
Spiritualist, and being a Spiritualist is one of the reasons at least,
that Charles
Darwin has received far more recognition than he did. Even though he
did much
to form our understanding of natural selection, he did not think it
could
answer all the questions about life. He thought there have been at
least three
times in the history of humanity that some form of Divine intervention
had been
necessary. The first was when life first began, the second was when
higher
animals gained consciousness and the third was higher mental abilities
developed in humanity. So, Wallace believed in evolution through
natural
selection, but something more was needed to explain life as we see it.
There
also had to be a spiritual dimension to life for the miracles of life
to have
happened and for human beings to have created all the mathematical,
artistic
and cultural forms we have developed.
Natural
selection describes how creatures can change according to the nature of
their
environment. For example, in humans, black skin is said to be an
advantage in
tropical climates because it confers more resistance to infections,
insects,
and sunburn. White skin is advantageous in colder climates as it
absorbs
ultraviolet light from the sun and is better at making vitamin D. So,
if all
humans began being the same colour, those in the tropics who happened
to have
darker skin than others would be more likely to survive. The opposite
is true
for those living in colder climates. Those with a whiter skin have the
advantage and are more likely to survive and have children. Over
generations
people will change to have the skin colour most adapted to their
environment
resulting in the different colours of skin that we actually see in the
world.
Viruses
are the problem that they are because they can adapt and change easily
and they
can have many generations in a short amount of time. Viruses adapt to
changing
environments very quickly and effectively. Whenever we find a more
effective
cure for a virus, it immediately starts using natural selection to
modify
itself to become resistant again.
Charles
Darwin found a gypsy moth that landed on particular trees. Those moths
that had
similar colours to the tree were better camouflaged and tended to
survive.
Because of air pollution, however, the bark on the trees grew darker.
The moths
also changed colour in line with these changes. When the air pollution
was
finally brought under control, the tree bark lightened again and so did
the
moths’ colours.
Dog
breeding is the controlled use of natural selection to create a dog
that has
the features desired by the breeder.
Over
the millennia horses, cats etc have developed into all sorts of sizes,
from
some more like rats to others being very large, each adapted to the
environment
in which they must live.
So,
evolution clearly does happen. The fossil record clearly shows it
happens and
in small organisms that can have many generations in a short period of
time, we
can actually see evolution happening before our eyes. That does not
mean that there
are not problems with the Theory of Evolution.
Darwin
(and Wallace) made some significant errors in how they thought
evolution
worked. When you realise that in their time, nothing was known about
DNA and
genetics, they did pretty well. Much of Darwin’s
original Theory has been modified over time in response to new
discoveries in scientific
knowledge not available in the 19th century. Even with these
improvements, there are still problems that will not go away.
One
of the key components of Darwin’s
theory was that evolutionary change occurs slowly and evenly over
extremely
long periods of time. In actual fact the fossil record does not show
this. It
shows species of animals being significantly different suddenly
appearing. Darwin
assumed that in
time more fossils would be found which would fill the gaps in the
fossil
record, but all this time later, though the fossil record is more full,
the
gaps are still there.
We
would expect to find many transition species as animals evolve from one
type to
another. There are some such species as the archaeopteryx – half way
between a
dinosaur and a bird and the tiktaalik – half way between a mammal and a
fish,
but we should see many more if Darwin’s
ideas are correct.
Gradual
change explains well why a creature might get bigger or smaller, but it
does
not explain as well something like the evolution of a wing for flying.
According to Darwin’s
ideas the development of a wing would need many intermediate steps all
co-ordinated together. Not only do feathers need to evolve but the bone
structure must become lighter, the muscles must be different to
facilitate a
different range of motion and so forth. During intermediate steps there
must
have been a half a wing that would be no use to an animal. It would not
allow
the creature to fly and takes away the use of a limb that could
otherwise be
more usefully used. That would make the creature even less well adapted
to its
environment and highly likely to go extinct. The kiwi evolved from a
bird that
flew to New Zealand
but once here, without significant predators, being able to fly was
less
important and so the wings shrunk back again until it could not fly.
Stephen
J Gould and Niles Eldredge have proposed a theory they call Punctuated
Equilibria. What that means is that most usually the environment
remains
stable, so there is no need for the species to adapt. Then eventually
there
will be a significant change and so change is needed, and that occur
relatively
quickly. The modern study of Systems Theory talks about tipping points.
That
says that often in a complex system the level of chaos builds slowly
over time.
For a long time the system can cope with the tension that results from
the
chaos and still remains stable because it can adapt to meet the
challenge.
Eventually, however, the system reaches the limits of its ability to
adapt and
it reaches a tipping point. At that point, the system either collapses
quickly
or quickly restructures itself significantly in a way.
In
terms of evolution it would mean that the form of a particular creature
can
remain stable for a long time, in spite of prolonged pressure from the
environment, but when the form just can’t cope with the stresses on the
environment it will either go extinct, or change its shape quickly into
a new,
more complex form which is better adapted to that environment. This
could
explain why new forms seem to appear suddenly in the fossil record and
how the
eye and wing could form. When I say “suddenly” I mean suddenly in a
relative
sense, so we are still talking about thousands of years as compared to
many
millions of years.
Even
so, it is a rather miraculous to form a wing. So many new forms need to
be all
co-ordinated to happen together. How does the creature know that a
particular type
of bone structure, highly developed feathers and pattern of muscles
attachments
will form a wing capable of allowing the bird to fly. Richard Dawkins
has
suggested that maybe feathers grew because of some other factor in the
environment but then found they could be used to fly. I’m not sure what
else
feathers could be used for.
Many
creatures have evolved traits or lost useful traits that do not appear
to fit
with natural selection. Snakes evolved to lose most hearing, a lions
mane is an
impediment to hunting and does not seem to have any other purpose, the
short
limbs of the Tyrannosaurus can not have been very useful and the three
linking
bones in a human ear are unnecessarily complicated.
There
is also the problem that all the main forms of life evolved into
species early
on in the history of life and while there has been much variation
within
species, no brand new species have evolved. Once a species is formed it
remains
amazingly stable, while there is much variation within the species.
Darwinian
evolution says there is no purpose to evolution; that everything is
just the
response to becoming more effective at living in any given environment.
So, why
does life relentlessly move towards higher levels of complexity? A part
of the
answer as to why nature evolves towards greater complexity is that two
similar
creatures competing for the same resources in an environment will be
adapting
to become more efficient by becoming more complex. In general the more
complex
creature will outlive the less complex. Is that enough to explain the
relentless march towards complexity?
Why
are we not swamped with less evolved forms since they are easier for
nature to
create? It would be easier for nature to just fill the earth with
plants, but
evolution just keeps moving on creating more and more wonderful and
complex
types of life.
The
three times that Alfred Russell Wallace talks about when there must
have been
some form of divine intervention, may well have been tipping points.
Gould and
Eldredge’s Punctuated Equilibria can explain the tipping points, but is
that
enough for evolution to have evolved in such a directed way?
Because
scientists have to face the powerful creationist lobby, they are often
too
cautious to declare their doubts about evolution from a scientific
viewpoint.
The basic nature of the universe set out the limits of what can be and
what can
not be. If we accept the proposal of many ancient spiritual traditions
and
scientists like Ervin Laszlo, then the fundamental structure of the
cosmos is
conscious or indeed taking the Spiritualist principle that the Source
of all is
Universal Love, then the stage is set for a journey through time
whereby the
consciousness of the universe is made manifest through the process of
evolution.
Ervin
Laszlo talks of quantum coherence discovered by scientists looking at
quantum
mechanics. He says that woven through the very fabric of the universe
is a coherence,
a connectedness that allows different parts of the universe to
co-operate. We
might be more tempted to call quantum coherence something like divine
energy.
Madame
Blavatsky, who founded the Theosophical movement actually first used
the term “intelligent
design”. That term has been misused by those who would have a literal
reading
of the bible, but if we see that intelligent design working in a
different way,
as quantum coherence or divine energy using evolution, maybe
intelligent design
describes another part of the jig saw puzzle that describes life as we
know it.
I
believe the ideas of evolution and creationism need not contradict each
other,
especially if we look at creation as an ongoing process rather than a
one-off
event. The fundamentalist picture of creation is a creation that is
fully
created with everything ready to go from the start. We can rather see
creation
like bringing up a child, where the seed is sewn, which must then grow
and
develop itself, albeit with the help and support of the parents.
The
idea of creation being a process is reflected in the first words of the
Bible. Genesis
1:1 says, “In the beginning God created the heavens and the earth.” Of
course
this is a translation of the original Hebrew, which begins, “Bereshit
bara Elohim.”
Bereshit means “in the beginning”, “Elohim” means God and Bara is the
verb, to
create. Bara is usually translated as “created” because that makes
sense in
English, but a more accurate translation is, “In the beginning God is
creating
the heavens and the earth.” In other words creation is seen as an
ongoing
process, not a one-off event. Rather than seeing God as standing
outside of his
creation and setting it off, we can see God as part and parcel of the
ongoing
creation. Evolution becomes a spiritual process. This way of looking at
life
also God and God’s creation are one. Since we are a part of God’s
creation,
then we also must be a part of God. God is in us and we are in God and
we evolve
to co-create our universe together.
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