I found your
feedback interesting, but full of errors.
Evolution is indeed a fact. And a theory.
The claim that "Evolution is just a theory" is such a
common misconception about evolution that it deserves a
detailed rebuttal. This comment is born out of misuse of
the word theory. People who make statements like: "But it's
only a theory; it's not a scientific law," or "It's a
theory, not a fact," don't really know the meanings of the
words their using.
Theory does not mean guess, or hunch, or hypothesis. A
theory does not change into a scientific law with the
accumulation of new or better evidence. A theory will
always be a theory, a law will always be a law. A theory
will never become a law, and a law never was a theory.
The following definitions, based on information from the
National Academy of Sciences, should help anyone understand
why evolution is not "just a theory."
A scientific law is a description of an observed
phenomenon. Kepler's Laws of Planetary Motion are a good
example. Those laws describe the motions of planets. But
they do not explain why they are that way. If all
scientists ever did was to formulate scientific laws, then
the universe would be very well-described, but still
unexplained and very mysterious.
A theory is a scientific explanation of an observed
phenomenon. Unlike laws, theories actually explain why
things are the way they are. Theories are what science is
for. If, then, a theory is a scientific explanation of a
natural phenomena, ask yourself this: "What part of that
definition excludes a theory from being a fact?" The answer
is nothing! There is no reason a theory cannot be an actual
fact as well.
For example, there is the phenomenon of gravity, which
you can feel. It is a fact that you can feel it, and that
bodies caught in a gravitational field will fall towards
the center. Then there is the theory of gravity, which
explains the phenomenon of gravity, based on observation,
physical evidence and experiment. Albert Einstein's General
Theory of Relativity replaced the less accurate gravity
theory of Sir Isaac Newton, which was the first complete
mathematical theory formulated which described a
fundamental force.
There is the modern theory of evolution, neo-darwinism.
It is a synthesis of many scientific fields (biology,
population genetics, paleontology, embryology, geology,
zoology, microbiology, botany, and more). It replaces
darwinism, which replaced lamarckism, which replaced the
hypotheses of Erasmus Darwin (Charles' grandfather), which
expanded the ideas of Georges de Buffon, which in turn
expanded upon the classification of Karl von Linne. (see
also: Darwin's Precursors and Influences)
So there is the theory of evolution. Then there is the
FACT of evolution. Species change-- there is variation
within one kind of animal. There is a predictable range of
genetic variation in a species, as well as an expected rate
of random mutations. Creationists readily admit that a
"kind" (an ambiguous, non-scientific term) can develop into
different species (i.e. a dog "kind" can evolve into
wolves, coyotes, foxes, and all types of domestic dogs) but
they insist that it must stop there. They never give any
reason for this fabricated limitation-- they just deny that
it can happen. They just can't accept macroevolution,
because it contradicts the "truth" of their dogma. But in
reality, there is no limit to the degree that a species can
change. Given enough time, a fish-like species can evolve
into a amphibian-like species, an amphibian-like species
can evolve into a reptilian-like species, a reptilian-like
species can evolve into a mammalian-like species, and an
ape-like species can evolve into the modern human
species.
The process (simply stated) involves the genetic
potential of many different types of individuals within a
species, the birth of a great many individual organisms,
and the deaths of those individuals whose characteristics
are not as well suited to the total environment as other
individuals of the same species. The deaths of these less
well suited individuals allows for the increased
reproduction of the better suited ones, which initiates a
shift in the appearance and function of the species.
Without limitation. There is more genetic stuff to it than
that, but that is basically how it works.
Yes, evolution is a fact, as real as gravity. The fact
that all species alive today have descended from a common
ancestor can be denied, but not refuted. We know it happens
because we can observe it directly in short-lived species,
and for longer lived species there is genetic and fossil
evidence that is unambiguous. There is no other scientific
explanation for the diversity of living species. Evolution
is a very well established scientific concept with a
massive amount of physical evidence for support. It is not
a guess. Evolution is the basis of modern biology, and
universities and laboratories across the world are engaged
in research that explores evolution.
You don't have to 'believe' in evolution. You can trust
that the thousands of scientists who study this phenomenon
aren't morons, or Satanists. You can accept the general
idea that life propagates with modifications, and those
modifications can lead to improved survival, and that as
those modifications are passed over time, many
modifications can lead to a species that looks very
different from its predecessor. Is that so hard to
accept?
I have no faith at all in evolution. (I also have no
faith in algebra, chemistry or astronomy). Evolution either
stands or falls by the strength of the evidence used to
substantiate it. Evolutionary biology relies on factual
data, physical evidence, molecular experimentation, and it
goes hand in hand with geology.
Some people can say "Well, scientists weren't there...
they don't know what happened. It's still faith." But that
is mere blind objectionism, like an ostrich hiding its head
in the sand. There are real reasons behind the science of
reconstructing the past. My favorite analogy is forensic
science. A man can murder someone (with no witnesses), and
scientists can reconstruct the scene with such accuracy as
to pinpoint the guilty person-- with such accuracy as to
cause that man to receive the death penalty. For example,
most Americans are convinced of O.J. Simpson's guilt...
even though no one was there to see him do it. The
situation with evolution is much the same-- reconstructing
the past through examination of the evidence. It's true
that not every theory withstands the test of time and goes
on to be considered a fact by nearly all of the scientific
community, but evolution is one that has.
See also: Evolution
is a Fact and a Theory.
This is the statement from the National Academy of
Science:
Is Evolution a fact or a theory? The theory of evolution
explains how life on earth has changed. In scientific
terms, "theory" does not mean "guess" or "hunch" as it does
in everyday usage. Scientific theories are explanations of
natural phenomena built up logically from testable
observations and hypotheses. Biological evolution is the
best scientific explanation we have for the enormous range
of observations about the living world. Scientists most
often use the word "fact" to describe an observation. But
scientists can also use fact to mean something that has
been tested or observed so many times that there is no
longer a compelling reason to keep testing or looking for
examples. The occurrence of evolution in this sense is a
fact. Scientists no longer question whether descent with
modification occurred because the evidence supporting the
idea is so strong. Why isn't evolution called a law? Laws
are generalizations that describe phenomena, whereas
theories explain phenomena. For example, the laws of
thermodynamics describe what will happen under certain
circumstances; thermodynamics theories explain why these
events occur. Laws, like facts and theories, can change
with better data. But theories do not develop into laws
with the accumulation of evidence. Rather, theories are the
goal of science.
To say that evolution is a religion is grossly wrong,
and simply ignorant. You claim that evolutionists "believe"
in it because they don't want to answer to a higher power.
This false and ignorant claim ignores the fact that the
vast majority of evolutionists are not atheists. In
addition, it is false that all humans can be traced
back to one male and one female.
Let's keep evolution right where it belongs, thank
you.