A Basic Guide to the Facts in the Evolution Debate
by
Tim M. Berra; Stanford U. Press; 1990
PREFACE
I was originally drawn into the evolution/creation controversy in 1982, when I reviewed a draft of the Biology Curriculum Guide of the Columbus, Ohio, public schools. Until then, I had shared the view of most scientists that the creationists were not to be taken seriously. "Just ignore them, and their demands will soon be forgotten," was the attitude of busy scientists who didn’t want to interrupt their research to do battle with the quaint notions of a bygone age -- any more than astronomers should have to trouble themselves to refute the outlandish claims of astrology.
But astrologers are not campaigning to geophistry taught as science in the public schools, and I was shocked to see that this Biology Curriculum Guide, a handbook for high school biology teachers, was about 50 percent creationist. It considered such fundamentalist Christian beliefs as that the Earth is only a few thousand years old to be the scienticic equal of modern radiometric-dating techniques. Along the way, it trotted out the usual creationist chestnuts -- misrepresentation of the Second Law of Thermodynamics, distortion of the fossil record, the claim of worldwide flooding, and many other examples of anti-science -- passing them all off as science. The last straw came when, on pages 133 & 137 of the handbook, the National Enquirer was quoted as a scientific reference.
That was when I realized that science education is in trouble! It was clear that the strategy of ignoring the creationists would work to the detriment of both science and society. Apparently, many biologists and other scientists began waking up to the threat at about the same time, and scientists are now writing and speaking out to inform the public that creationism has no scientific validity and is a threat to the growth and spread of knowledge. (See the second reading list following the text for recent books inspired by the creationist attack on science) To allow disguised, fundamentalist beliefs into the science classroom is to devbalue education at a time when our country needs the best scientific minds it can muster just to stay even with the worldwide technological explosion.
To teach students that the foundations of biology, most of geology and astronomy, and a good deal of physics are flawed is to cheat them, shackle their intellectual growth, erode their ability to compete for jobs, and stifle their prospects for a rewarding life.
Creationists, for the most part, are fundamentalist Christians whose central premise is a literal interpretatiion of the Bible and a belief in its inerrancy. In adopting a literal interpretation of the Bible, they differ from nearlyh all other Christians and Jews. Scientists, many of whom are religious, have no wish to deny fundamentalists their own beliefs, but the creationists are determined to impose their views on others. In particular, they are lobbying to have science classes teach the ideas of: a sudden creation from nothing by God; a worldwide flood; a yhoung Earth; and the separate ancestry of humans and apes. These ideas constitute the biblical story of creation and, as such, are inherently religious. And because they depend on supernatural intervention, not natural law, they are also unscientific. There is no scientific evidence, or even an appeal from common sense or experience, to support the creationists’ claims. The few claims that are susceptible to testing, such as a young Earth, are shown by the scientific evidence to be false. Yet creationists do not remove demonstrably false ideas from their pantheon of beliefs. Unlide scientists, they do not subject their assertions to revision based on evidence. Since this pattern of thought is not scientific -- does not require or even condone testing and retesting -- it should not be taught in science cllassrooms in public schools.
The creationists are determined to force their will on society and the schools, through the courts if possible. Their strategy -- ironically enough, considering the moral precepts of Christianity -- is founded in deception, misrepresentation, and obfuscation designed to dupe the public into thinking that there is a genuine scientific controversy about the validity of evolution. No such controversy exists, but it is difficult for the lay public public to distinguish the scientists, who often disagree on the nuances of evolutionary theory (but not on evolution’s existence), from the creationists, who stick together and cloak absurd claims in scientific terminology.
Creationists arguments are discussed in Chapter 5 of this book, and the reader is also referred to Science (1982, 215; 934-43) for the legal opinion of U.S. District Court Judge William R. Overton on the creationists’ claims to be "scientific".
This book has three related purposes. First, it is an attempt to explain evolution to people who are genuinely confused by the claims of creationists, who try to present fundamentalists Christian beliefs as science. Second, it seeks to provide useful ammunition to the high school biology teacher or school board member who finds himself or herself under attack by creationists. Third, it should be a useful supplemental text for introductory college-level classes in biology, zoology, botany, or anthropology. These three purposes can all be served by answering the following question: What should an educated person know about the theory of evolution? I have tried to provide that informatin in this little book.
I am writing for the open-minded reader who does not understand the technical issues of evolution, but would like to, who sees everywhere the signs of a bitter philosophical and educational debate, but does not know what to make of it, or who to believe.
Those readers who demand a literal interpretation of the Bible will probably not be swayed by this book, for they have chosen to abandon reason and evidence in favor of dogma and blind faith.
Several scientist colleagues who read this book in one of its 16 drafts admonished me to tone down the bluntness of my statements on creationism, fearing that I might alienate otherwise receptive readers. But it seems to me that scientists have, for too long, teaded too lightly on the creationists, and have thereby fostered the impression that the creationists are a legitimate scientific voice. It is time for candor and clarity.
Much in modern life has become dismayingly technical, and evolutionary theory is no exception, but a generation that has learned to cope with VCR’s, work processors, and instant teller machines should be able to handle the basic facts of evolution. ...
CONTENTS:
Chap 1. What is Evolution?
Hypotheses & Experiments
Literal Interpretation
and the Scientific Method
Natural Selection &
Evolution
Nonadaptive Evolution
Population and Gene
Flow
Reproductive Isolating
Mechanisms
Catastrophes &
Mass Extinctions
Embryology, Morphology,
and Biogeography
Chap 2. Geologic Time and the Fossil Record
Superposition and Faunal
Succession
Radioactive Decay and Absolute Dating
Reading the Rocks and
the Fossils
Transitional Fossils
Punctuated Equilibrium
Chap 3. The Explanatory Power of Evolution
Drug Resistance in
Bacteria
Rabbits & Myxomatosis
The Peppered Moth and
Industrial Melanism
Sickle Cell Anemia
& Malaria
Convergent Evolution
Stepwise Adaptation
Chap 4. The Evolution of Life and the Rise
of Humans
The Big Bang
The Early Earth
Origin-of-Life Experiments
Development of an Oxygen-Rich
Atmosphere
Emergent Evolution
The Origin of Multicellularity
The Origin of Vertebrates
The Terrestrial Vertebrates
Primate Relationships
The Molecular Clock
& DNA Hybridization
The Australopithecines
The Origin of Bipedality
The Genuns Homo and
Modern Humans
Chap 5. Science, Religion, Politics, Law,
and Education
The Grim Realities
of Science Education
Evolution vs. Religion
Some Creationist Claims
The Scopes Trial
The Arkansas Balanced
Treatment Act
The Louisiana Creationism
Act
The Inevitable Triumph
of Knowledge
[Note- the full text of this book can be read at the reservation desks at the Valle Verde and North West campuses of EPCC. A copy of this book is also in the personal research library of Dr. Jerry Johnson of the Biology Dept. at the Valle Verde Campus of EPCC.]
Chap 1: What is Evolution
p3 ... A scientific theory
must also be capable of being falsified. That is, there must be some
set of circumstances such that, if they were to occur, the theory would
fail to explain the facts. ... any theory incapable of being falsified,
such as that a God exists or that people have souls, is not a scientific
one.
On this basis, if mammalian fossils were
found in rocks older than those that contain the first fish fossils, then
a major element of the theory of evolution -- that mammals arose far more
recently than fishes, ... would be falsified.
p4 ... Science, because
it is a self-correcting endeavor, is prepared to modify any theory, no
matter how cherished, if the data show that to be necessary.
... But a theory in the special scientific
sense is not "just a theory," as creationists are fond of saying.
A scientific theory is the endpoint of the scientific method ...
Literal Interpretatiion & the Scientific
Method:
... the methods and
claims of creatinists are not subject to experimentation, prediction, revision,
or falsification. To them, these pursuits are irrelevant, because
they believe they possess the "truth" as set forth in the Bible.
In their view, scientific theory or evidence that contradicts the Bible
must be in error, because the Bible (actually, their particular interpretation
of the Bible) cannot be mistaken. This view is clearly stated by
creationist spokesman Henry M. Morris, Director of the Institute for Creation
Research in San Diego, who asserted, "It is precisely because Biblical
revelation is absolutely authoritative and perspicuous that the scientific
facts, rightly interpreted, will give the same testimony as that of Scripture.
There is not the
p5 slightest possibility
that the facts of science can contradict the Bible and, therefore, there
is no need to fear that a truly scientific comparison of any aspect of
the two models of origins can ever yield a verdict in favor of evolution"
(Morris, 1974, Scientific Creationism, pp. 15-16) Elsewhere, Morris
wrote, "The only way we can determine the true age of the earth is for
God to tell us what it is. And since He has told us, very plainly,
in the Holy Scriptures that it is several thousand years in age, and no
more, that ought to settle all basic questiions of terrestrial chronology"
(Morris, 1978, p. 94). These views are most definitely not applications
of the scientific method or even of common sense.
Thus the Creationists
must ignore or distort the evidence for evolution in order to force it
into compliance with their interpretation of the Bible. For example,
creationists interpret the Bible to be saying that the Earth was formed
about 10,000 years ago. The vast array of scientific data pointing
to an ancient Earth, drawn from nuclear physics in the form of radiometric
dating, is discarded by the creationists because it doesn't fit their view.
This is not a scientific approach, and the term "scientific creationism"
is an oxymoron -- a self-contradicting phrase. Most Christians and
Jews are content to see the Bible as metaphor or mystery or allegory, at
least in the particulars of the Book of Genesis, but the fundamentalists,
the creationists, believe it can be (and must be) interpreted literally.
A literal interpretation
of the scriptures poses problems for the fundamentalists because there
are two quite different versions of creation in Genesis. The first
story ("In the beginning ...") starts at the beginning of the first chapter
of Genesis and ends early in the second chapter. The second creation
story (The Garden of Eden) begins in the second chapter and continues through
the third. These two stories describe creation events in contradictory
sequences and in different terms, and the theological messages are distinctly
different. Which account do creationists claim is literally, historically
true? The other must then be false or at least not taken literally.
A thoughtful analysis of this fundamentalist dilemma is given by Beck (1982).
p6 ... In
Nov. 1859, Darwin published "On the Origin of Species", in which he not
only elaborated the theory of evolution, but also proposed a mechanism
by which it could work. Today the theory of evolution forms the foundation
of the biological sciences and their applied subdisciplines of medicine
and agriculture, by providing the conceptual framework for both experimentation
and prediction.
...
Darwin ... reasoned that there is competition -- for survival, mates, space,
food, shelter, and other resources -- in which the favorable variations
tend to be preserved by nature and the unfavorable ones tend to die out.
He called this process NATURAL SELECTION..
...
The consequence of natural selection is biological
evolution, which Darwin termed "descent with modification." This
is still, 131 years later, considered a good descriptive definition of
evolution.
p31 Chap 2: Geologic Time and the Fossil Record
Fossils are the remains or traces of prehistoric life. ... By studying great numbers and varieties of fossils, we can see evolution in action over far greater time periods than would be possible if we were to restrict ourselves to living groups of plants and animals. Fossils provide hard evidence that evolution has occurred.
p33 ... a paleontologist
(a scientist who studies prehistoric life)
... When Charles Darwin
published On the Origin of Species in 1859, the fossil record was already
well enough understood that scientists recognized the "progressive" nature
of a very old Earth. It was clear that some things lay atop others,
that some were therefore presumably older than others. Evolutionary
theory supports that observatiion, predicting that when the remains of
plants or animals are present in rocks of different ages, then these remains
should describe some sensible sequence reflecting the extinction of some
groups and the evolution of new groups as time passes and the environment
changes.
p34 ... Particular
fossils that keep turning up in different parts of the same stratum, perhaps
hundreds or thousands of miles apart, are called indicator fossils, because
they help geologists recognize the equivalent age of rock formations in
separate parts of the world, and thus provide an independent means of arriving
at a relative age for each stratum. Though this procedure cannot
establish the absolute age of the rock strata ... it succeeds very impressively
in demonstrating that Rock Stratum A is older than Rock Stratum B.
The principle that
fossils in a stratigraphic sequence succeed one another in a definite,
recognizable order is called faunal succession. ... By
using superposition and faunal or floral succession, geologists and paleontologists
constructed a geologic time table for many regions of the world, a timetable
that was essentially established by 1841, 18 years before Darwin published
On the Origin of Species. Thus the groundwork for a theory of change
in the living things of the Earth was laid long before Darwin began piecing
together a formal theory of evolution.
p36 ...
Today ... we are able to determine the absolute age of ancient rocks, whether
they contain fossils or not, by means of a technique called radiometric
dating.
... The decay of the radioisotope continues
over vast periods of time, but at a fixed rate, independent of temperature,
pressure, or other environmental variables. No other process on Earth
proceeds at such an utterly constant rate.
The decay rate that
is so dependable in the absolute dating of rocks is expressed as the half-life
of the radioisotope; that is the time it takes for half of the radioactive
atoms in the sample to decay.
p37 ... Several radioactive
isotopes are used in determining geologic time. ... we have uranium
238, which decays to lead 206 with a half-life of 4.5 billion years.
Uranium 235 decays to lead 207 with a half-life
of 704 million years. Potassium 40 decays
to argon 40 with a half-life of 1.25 billion years. The
potassium-argon system is relatively common in rocks and is therefore more
widely used than other systems. Each of these decay processes
(there are several others) offers us a system of dating, and in each case
the extent of the decay can be measured in the laboratory with great
precision. ... The theory of radiometric dating is very simple,
but in practice the technique is complicated by difficulties in making
precise measurements of tiny amounts of isotopes. Moreover, not all
rocks can be used for radiometric dating. Igneous rocks (rocks that
cooled from the molten state), such as volcanic or granitic rocks, are
the best for radiometric dating. Fossils do not occur in such rocks,
but if fossils occur between two undisturbed layers of volcanic rock, the
age of the fossils has to be between the dates of the two volcanic strata.
Some skeletons, if they have incorporated sufficient amounts of uranium,
may be dated directly. Measurements of the decay of uranium 235 to
lead 207, even in very small samples of fossils, are accurate to within
2 percent, but 2 percent of a billion years is a lot of time, and a corroboration
from stratigraphy can be valuable.
p38 Radiocarbon
(carbon 14) dating can be applied directly to fossils or organic
human artifacts (but not stone artifacts) and can be quite accurate.
Unstable carbon 14 is formed in the atmosphere from stable nitrogen 14
by the bombardment of cosmic rays from space. Because its rate of
formation balances its rate of decay, in atmospheric carbon dioxide the
proportion of unstable carbon (C14) relative to ordinary carbon (C12) is
essentially constant. Plants take in the atmospheric carbon dioxide
from the air, and animals eat the plants. Thus both plants and animals
have a fixed amount of C14 in their tissues while alive, but after death
no new C14 can replace the amount lost by radioactive decay to N14.
Therefore, by measuring the remaining proportion of C14 relative to C12,
we can calculate the approximate time of death as
far back as about 50,000 years ago. In a sample older than
that, the amount of C14 remaining today is too small to be accurately measured
(the half-life of C14 is just 5,730 years). Creationists attempt
to discredit C14 dating by applying it to fossils older than 50,000 years,
or in other inappropriate ways, and then showing that it yhields obviously
erroneous dates.
Reading the Rocks and the Fossils -- How
Old Is the Earth, and How Old Is Life?
By combining the results
of the absolute dating method (calculating radioactive decay) with those
of the relative dating method (seeing what rock strata lie above and below),
we can interpret the fossil record with increasing confidence. The
age of the Earth and Moon has been
demonstrated to be about 4.5 billion years. This is
not a guess based upon a few selected rocks. Over the last 30 years
nearly 100 independent laboratories worldwide have published in the scientific
literature over 100,000 radiometric ages that support this conclusion.
The earliest fossils
discovered to date are bacteria and primitive plants called blue-green
algae, which date back to about 3.5 billion years. ... Cambrian rocks
... from 570 million years ago (MYA), are rich with the remains of many
invertebrate groups, ...
p39 ...
As one moves forward in geologic time, up into higher rock strata, other
groups of animals are encountered. The first known backboned animals,
primitive fishes called ostracoderms, appeared in the late Cambrian, over
500 MYA, the first jawed fishes (placoderms) in the Silurian, the first
amphibians in the Devonian, the first reptiles in the Carboniferous.
The Mesozoic is known as the "Age of Reptiles" for its proliferation of
dinosaurs and other reptiles. The first known mammals and birds split
away from different reptilian ancestors in the Triassic and Jurassic, respectively.
Primates, the mammalian order to which we belong, arose in the Paleocene
and were widespread by the Oligocene, about 38 MYA.
This
sequential appearance of different groups at different times, the more
advanced appearing in general later than the more privitive, is predicted
by evolutionary theory. It cannot be reconciled with creationism,
which requires all groups to have come into existence essentially simultaneously
and fully formed a mere 6,000 to 10,000 years ago.
People once thought that the Earth was flat and that it was the center
of the universe. It is now high time we laid the creationist ideas
to rest, as well.
p40 ... The most famous
transitional fossil is Archaeopteryx, a crow-sized
animal that dates back to the Jurassic about 150 MYA, and is known from
skeletons retrieved from the limestone of Bavaria. Today, Archaeopteryx
is classified as a bird, because the fossils clearly show the impression
of feathers, but before the feather impressions were noticed, it was classified
as a reptile on the basis of its skeletal structure. ... Archaeopteryx
is clearly intermediate between reptiles and birds.
p41 ... not to perceive its transitional
nature is to be willfully blind to the obvious.
p50 ... Creationists
frequently point to the lack of transitional fossils as a weakness of evolutionary
theory. But it is not reasonable to expect every single species that
ever lived, or even very many of them, to show up in the fossil record.
There will always be gaps, owing to the nature of fossilization and the
chanciness of discovery. ... transitional forms between species should
be rare in the fossil record. Such a statement is not made to protect
evolutionary theory from falsification but to warn how rare such fossils
are likely to be. That even one transitional fossil is found is a
sufficient demonstration of evolution and a resounding falsification of
creationism. ... Transitional forms between major groups -- such
as Archaeopteryx, which was intermediate between two classes -- do exist,
a fact to which creationists close their eyes.
p70 Chap 4: The Evolution of Life and the Rise of Humans
For the creationists, the task of explaining the origin of life is dazzlingly easy: it was simply created. For scientists, who look to hard evidence, observable facts, and critical thinking for explanations, the task is not so easy -- complexities, subtleties, and the immmensities of time intrude. ...
The Big
Bang -- How and When Did It All Begin?
... Cosmologists (astrophysicists
who study the Universe as a whole) postulate that the Universe originated
in a gigantic explosion called the Big Bang. The Universe
began as an infinitely hot point of
infinite density, which cooled and diffused as it exploded outward.
Science can make no statement about the nature of the Universe prior to
that explosion, because the physics of the Big Bang is not yet fully understood.
We know that space, time, matter, and energy existed after the Big Bang.
Einstein's 1916 theory of general relativity, showing that matter and energy
are interchangeable, and that space and time are a continuum, forms part
of the framework of the Big Bang theory.
Why do cosmologists
think there was a Big Bang? Practically everything we know about
the Universe is based on an analysis of electromagnetic radiation such
as x-rays, radio waves, light, etc. all of which travel at the speed
of light. These data provided the key to the Big Bang theory by showing
that the Universe is expanding. ... most galaxies appear to be receding
at great speed, and that only a very few nearby galaxies show blue shifts.
Everything is receding from everything else like spots painted on the surface
of an inflating balloon; but there is no center of expansion.
Huubble eventually
demonstrated that the extent of the red shift shown by a galaxy is directly
proportional to the galaxy's distance from us. Calculations based
on the rate at which the stars seem to be receding from each other, and
allowing for acceleration due to gravity, indicate that the
Big Bang occurred sometime between 10 and 20 billion years ago. Recent
studies of star spectra support an age of around 11-12 billion years.
Most cosmologists favor a figure of around 12 to 15 billion.
In 1964 ... detected
cosmic microwave background radiation by using signals reflected from the
Echo satellites. Cosmologists agree that this radiation is the primeval
light and heat from the Big Bang itself.
p72 ... The big question in cosmology today is whether the Universe will continue to expand forever, or whether it will begin to contract and collapse into the infinite density from which it originated. The answer depends on how much matter exists in the Universe. If the total amount of matter left over from the Big Bang exceeds a certain critical mass, gravitational forces will eventually bring avout a collapse. If the matter in the Universe equals or is less than the critical mass, the Universe will expand forever. The calculations of the total amount of matter in the Universe are maddeningly near the border of the critical amount. The answer continues to elude us.
The Early Earth -- What Was It Like Before Life?
After the Big Bang,
matter aggregated into glowing masses (stars) that clustered together via
mutual gravitational attraction into assemblages of stars (galaxies) scattered
across space. Our own island of stars is the Milky Way Galaxy.
It is made up of some 100 trillion stars (that's 100 followed by nine zeros)
scattered across a disk roughly 100,000 light-years in diameter. ... The
disk of stars is slightly over 2,000 light-years thick. Nearly all
the stars we see with the unaided eye are in the Milky Way.
Eventually, our
rather ordinary solar system formed in the Milky Way Galaxy about 4.5 billion
years ago (BYA). It condensed out of a cloud of dust
created by the Big Bang. One can observe stars forming today in the
same manner in the Orion Nebula. The planets, including Earth, formed
out of the aggregated matter from the dust cloud around the Sun.
For eons and eons, water would have existed on Earth only as superheated
steam that rose to the upper atmosphere, condensed, and fell as rain, which
then became hot vapors again. By 3.8 BYA at most, the Earth had cooled
sufficiently to allow rock formation, since that is the earliest date reflected
by the radiometric dating of Earth rocks.
p73
Moon rocks brought back by Apollo 11 & Apollo 12 proved to be about
4.5 billion years old. Eventually the Earth's surface
would have cooled sufficiently to allow standing bodies of water to accumulate.
These pools would offer sites for chemical evolution.
The early Earth rocks
suggest an oxygen-free atmosphere (today almost 1/5 of the atmosphere is
free oxygen). The presence of great amounts of ferrous iron in the
early banded iron formations indicates that free oxygen was unavailable
in the atmosphere. (If oxygen had been present, the iron would be
in the ferric state -- that is, it would have oxidized, or rusted.
Gasses escaping from
the hot interior of the Earth, through volcanic vents, may have produced
an atmosphere composed of some or all of the following gases: carbon
monoxide, carbon dioxide, nitrogen, hydrogen sulfide, ammonia, methane,
hydrogen, and water vapor. Geochemists are currently debating the
relative amounts of these gases that may have been present in the early
atmosphere, but free oxygen was not one of them. Carbonate minerals
in early rocks indicate that these rocks formed in an atmosphere of carbon
dioxide rather than methane. ...
p120 Chap 5: Science, Religion, Politics, Law & Education
The evolution/creation debate is ostensibly about science, but that is simply what the fundamentalists want us to believe, for a great deal more is at stake, and they are well aware that creationism is not science. The goals of "creation science" have far more to do with religion, politics, law, and education, and to whatever extent the scientific trapping of "creation science" are accorded credence, by the schools or by the courts, much will suffer: freedom of thought, an informed, open-minded American public, the vitality of science and technology, and the fate of our society in an increasingly competitive, increasingly educated world.
p121 ... In a survey
of undergraduates in 3 states (excerpted in the Chronicle of Higher Education,
Nov. 19, 1986, p. 37), more than half said they were creationists and 1/3
or more believed in ghosts, communication with the dead, extraterrestrials,
aliens, Big Foot, etc. The prevalence of such pseudo-scientific beliefs
is an indictment of current science-educatiion practices, which seem less
effective than education via supermarket tabloids.
The survey also revealed
that those who accepted creationism were less likely to read books and
had lower grade-point averages than the noncreationists.
p122 ... it suggests
an anti-intellectual suspicion of knowledge on the part of those sympathetic
to creationism. ... pseudoscientific beliefs about the past.
... Several other opinion polls have revealed
a public sympathy toward teaching creationism along with evolution at both
the high school and the university level. Even university students
fall prey to the equal-time argument, notwithstanding that the creationist
interpretation of life is on a par with the idea of a flat Earth.
In spite of a trend toward greater acceptance of evolutionary theory with
increasing biological education, well over half the biology graduate students
surveyed at the Ohio State University favored teaching creationism in public
schools.
... In an equally alarming survey of 730
Ohio school board presidents ... which brought 336 responses, 53 percent
felt that "creation science" should be favorably taught in public schools,
and most of this group felt it should be presented in biology or science
classes. ...
p123 ... That the central
unifying theory of a major discipline, accepted almost without exception
in the rest of the educated world, must be smuggled in the back door of
the classroom, for fear of offending the creationists and the fundamentalists,
in an incredible commentary on the state of public education in the U.S.
... Republican presidential
candidate Ronald Reagan held a press conference at which he was asked if
he thought the theory of evolution should be taught in public schools.
He replied, "Well, it's a theory, it is a scientific theory only, and it
has in recent years been challenged in the world of science and is not
yet believed in the scientific community to be as infallible as it once
was believed. But if it was going to be taught in the schools, then
I think that also the biblical theory of creation, should also be taught"
(Science, 1980, 209; 1214) ...
p124 Evolution vs. Religion
__ What Do the Creationists Hope to Achieve?
...
The only Christian religious groups
that have problems with evolution are the Protestant fundamentalists, who
insist on a literal interpretation of the Bible ...
...Protestant fundamentalists reject theistic
evolution ... It is the fundamentalists who are trying to infuse their
brand of religion, taught as science, into public school classrooms.
Having failed in the past to have evolutionary theory banned from the classrooms,
the fundamentalists have adopted a new strategy, the promotion of a patchwork
enterprise they call "creation science." Their goal is to have the
biblical version of creation taught alongside evolution; and to disguise
the essentially religious nature of creationism, they have dressed it up
in scientific terminology. Since they have no persuasive arguments
of their own, or even intuitively satisfying suggestions, their plan is
to attack selected particulars of science and pretend to a science of their
own.
p126 ... the creationists' arguments are not only anti-biology but also anti-physics, anti-astronomy, and anti-geology. In short, they reject all scientific knowledge that does not fit their view of the world. ... they question the integrity of science. ...
Some Creationist Claims __ Do They Raise Any Legitimate Doubts?
1.
Evolution violates the second law of thermodynamics. Entropy (disorder)
is always increasing. Since order does not arise out of chaos, evolution
is therefore false.
Evolutionist
Rebuttal = ... you can get order out of disorder if you add energy.
... The Sun is the source of energy input to the Earth's living systems
and allows them to evolve. ... sunlight, via photosynthesis, provides
the energy input that propels evolution. ... What does represent
an increase in entropy, ... is the diversity of species produced by evolution.
2. The
small amount of helium in the atmosphere proves that the Earth is young.
If the Earth were as old as geologists say, there would be much more helium,
because it is a product of uranium decay.
Evolutionist Rebuttal =
Helium, used to suspend blimps in air, is a very light gas and simply escapes
into space; like hydrogen, it cannot accumulate in Earth's atmosphere to
any great extent.
3. The
rate of decay of the Earth's magnetism leads to the calculation that the
Earth was created about 10,000 years ago.
E. R. = The Earth's
magnetic field does indeed decay, but it does so cyclically, every few
thousand years, and it is constantly being renewed by the motion of the
liquid core of the Earth. The "fossil magnetism" recorded in ancient
rocks clearly demonstrates that polar reversals ... have occurred both
repeatedly and irregularly throughout Earth history ...
4. If evolution
were true, there would have to be transitional fossils, but there are none;
therefore, evolution did not occur.
E. R. = There are
many transitional fossils, including the ape-human transitional form,
Australopithecus. Eusthenopteron shows marvelous intermediate characteristics
between the lobe-finned fishes and the amphibians. The transitional
fossils between amphibians and reptiles are so various and so intermediate
that it is difficult to define where one group ends and the other begins.
Archaeopteryx is clearly intermediate between reptiles and birds.
... the creationists attempt to deny the transitional fossils out
of existence.
5. Fossils
seem to appear out of nowhere at the base of the Cambrian; therefore, they
had to have been created.
E. R. = The earliest microfossils
date back, in fact, to the Precambian, about 3.5 billion years ago.
A variety of multicellular life appears in the fossil record about 670
million years ago, which is 80 million years before the Cambrian.
The Cambrian does seem to explode with fossils, but that is simply because
the first shelled organisms, such as the brachiopods & the trilobites,
date from the Cambrian; their resistant shells fossilize far more readily
than their soft-bodied ancestors of the Precambrian. ...
6. All
fossils were deposited at the time of the Noachian flood.
E. R. = There is not
a shred of evidence in the geological record to support the claim of a
single, worldwide flood. Geological formations such as mountain ranges
and the Grand Canyon require millions of years to form, and the fossil
record extends over several billion years. The time required for
continents to have drifted into their present positions is immense.
These things cannot be accounted for by a single flood lasting a few days
or years.
7. There
are places where advanced fossils lie beneath more primitive fossils.
E. R. = Earth movements
such as faulting and thrusting produce these discontinuities; the older
rock has simply been pushed over on top of the younger rocks ... These
places are easily recognized and explained by geologists. They cannot
be explained by the creationists' belief that all fossils are result of
Noachian flood. ...
8. The
chances of the proper molecules randomly assembling into a living cell
are impossibly small.
E. R. = Simulation
experiments have repeatedly shown that amino acids do not assemble randomly.
Their molecular structure causes them to be self-ordering, which enhances
the chances of forming long chains of molecules. ... The stepwise
application of cumulative natural selection acting over long periods of
time can make the improbable very likely.
9. Dinosaur
and human footprints have been found together in Cretaceous linestone at
Glen Rose, Texas. Therefore, dinosaurs could not have preceded humans
by millions of years.
E. R. = This Fred Flintstone
version of prehistory is one of the most preposterous and devious claims
that the fundamentalists make ... The "mantracks" seen by creationists
stem from two sources. One is wishful imagination, whereby water-worn
scour marks and eroded dinosaur tracks are perceived as human footprints.
The other source is deliberate fraud. Creationist hoaxers obscure
the footpads of dinosaur tracks with sand and photograph what remains,
the dinosaur's toe impressions. When reversed, the tip of the dinosaur
toe or claw becomes the heel of a "human" print. These prints are
shown in poor-quality photographs in creationist literature and films.
Because the stride length (7 feet) and foot length (3 feet) exceed any
possible human scale, the fundamentalists call these the giants mentioned
in Genesis. ... legitimate dinosaur footprints at Glen Rose.
This area has since been extensively studied by paleontologists,
... No genuine human tracks exist there ...
10. Biologists
have never seen a species evolve.
E. R. = On a small
scale, we certainly have. Using allopolyploidy and artificial selection,
scientists have manufactured crop plants and horticultural novelties that
are reproductively isolated from the parental stock. ... Major
evolutionary changes, however, usually involve time periods vastly greater
than man's written record; we cannot watch such changes, but we can deduce
them by inference from living and fossil organisms.
11. Evolution,
too, is a religion, and requires faith.
E.R. = ... Biologists
do not have to believe that there are transitional fossils; we can examine
them in hundreds of museums around the world, ... Scientists do not
have to believe that the solar system is 4.5 billion years old; we can
test the age of Earth, Moon, and meteoritic rocks very accurately.
... Science exists because of the evidence, whereas religion exists
upon faith -- and, in the case of religious fundamentalism and creationism,
in spite of the evidence.
12. The
number of humans today would be much greater if we have been around as
long as evolutionists say we have.
E. R. = This notion
makes some very naive assumptions about birth and death rates, and the
fecundity of early humans, and assumes that populations are always growing,
when in fact most animal populations are at a level somewhat lower than
the carrying capacity of their environment. Such stable populations
remain stable for long periods of time, held in check by environmental
constraints. It is only our own species' recently acquired ability
to modify our environment that has allowed our numbers to get dangerously
out of control. ...
13. The
current rate of shrinkage of the Sun proves that the Earth could not be
as old as geologists say, because the surface of the Sun would have been
near the Earth's orbit just a few million years ago.
E. R. = This simplistic
view neglects the fact that stars, such as our Sun, have life cycles during
which events occur at different rates. ... we know a great
deal about the Sun, and we know that it has not been shrinking at a constant
rate.
14. A living
freshwater mussel was determined by Carbon 14 dating to be over 2,000 years
old; therefore Carbon 14 dating is worthless.
E. R. = When used
properly, Carbon 14 is a very accurate time-measuring technique.
The mussel in this example is an inappropriate case for C14 dating because
the animal had acquired much of its carbon from the limestone of the surrounding
water and sediment. These sources are very low in C14, owing to their
age and lack of mixing with fresh carbon from the atmosphere. Therefore
a newly killed mussel in these circumstances has less C14 than, a newly
cut tree branch. The reduced level of C14 yields an artificially
older date. ... one must understand the technique to use it properly.
15. The
influx of meteoritic dust from space to Earth is about 14 million tons
per year. If the Earth and Moon were 4.5 billion years old, then
there should be a layer of dust 50 to 100 feet thick covering their surfaces.
E.R. = This estimate
of dust influx is simply out of date. Space probes have found that
the level of dust influx from space is about 400 times less than that.
16. Prominent
biologists have made statements disputing evolution.
E. R. = The out-of-context
quote is one of the most insidious weapons in the creationists' arsenal
... Biologists do not deny the fact of evolution. We do, however,
debate its mechanisms and tempo. The debate reflects the vigorous
growth of a major scientific concept; it is what goes on routinely in all
healthy, growing branches of scholarship. Creationists dishonestly
portray this as a weakness of the theory of evolution.
These 16 points are just a few of the creationists'
arguments. There are others, but they are all of the same character
-- scientifically inaccurate, willful, oor devious.