Some
media cater to what could be called, “pop science.” They present
shows and articles on scientific subjects but package them in a way
that is interesting to an unscientific public. I understand this
happens and I'm usually not too critical on the groups that produce
pop science so long as the information is correct. When the subject
is evolution, however, I've usually found that the information
presented is garbage.
This
is the case in an online article published by Discovery called, “10
Examples of Natural Selection.” The piece is so poorly written
that I could make a series of 10 posts – one on each example –
explaining how wrong is the information contained in each example. I
won't do that, though. Instead, I'm going to merely point out a few
of the more egregious errors since these are the same errors that
I've seen evolutionists make before. Below, we'll look at just the
first two paragraphs. Text that is blue and italicized is quoted
directly from the article.
First,
the article terribly conflates natural selection with evolution. The title of the article says it is intended to be 10 examples of natural selection, yet the author starts by talking about evolution. Read it for yourself:
“When
we think of evolution, we usually think of primates evolving into
humans, and of the evolutionary changes that were made over thousands
and thousands of years...”
Yes!
That's exactly what I talked about in a
recent post. The most common understanding of the word
“evolution” is ape-to-man or dino-to-bird. Scientists have a
more technical meaning and they want to harp on the fact that the
majority of people don't use the word the way evolutionists have defined it.
But
the truth is evolution is at work all the time.
In
this context, the author is using “evolution” to mean “populations change.” He doesn't mean that one kind of animal
changes into another kind of animal “all the time” - he's merely
taking the word most people understand to mean “common descent”
and using it to mean any kind of “change.” It's equivocation
at its worst.
“Sometimes
the changes are small and appear insignificant at first glance, but
they all play a part in natural selection and the survival of the
species.”
Did
you notice it? The author has now slipped in the term, “natural
selection”? He was not careful to distinguish between evolution
and natural selection. He starts out talking about one, then starts
talking about the other. If he went on to explain the difference,
that would be one thing. He doesn't.
“But
natural selection doesn't lead to the development of a new species.
In most cases, the process simply allows a species to better adapt to
its environment ...”
I'm
not sure what this person means by saying that natural selection
doesn't lead to the development of a new species. Does he mean,
“never” or “not always”? Never mind. Even as a lay person,
I understand that natural selection does indeed allow a species to
adapt to its environment. It does this by selecting from existing
traits only those that are conducive to the environment (see my last
post
on this subject). However, this author doesn't seem to understand
how it works. See here how he explains it:
“In
most cases, the process simply allows a species to better adapt to
its environment by changing the genetic make up from one
generation to the next.” [bold
added]
I'm
not sure if there's a technical meaning to the term, “genetic make
up.” If he means that existing genetic variation is continuously
reshuffled to create the best possible combination of traits, then
OK. If he intends “genetic make up” to mean “new genetic
material,” then we have a problem. Natural selection does not
create anything new. It can only select from existing traits. But
I'm pretty sure this author means to say that natural selection
creates new genetic material. Look at his next point:
And
the process is actually quite predictable. If a species lacks a
certain trait that will allow it to survive, there are two options:
Either the species dies out or it develops the missing trait.
There
are so many errors contained in these two statements that I don't
think I can adequately cover them all. Still, I will try.
Mutations are random. The
process of evolution is not "predictable." If dinos had really changed
into birds, no one living contemporaneously with the dinos could have
predicted it. Of course, maybe the author means that “natural
selection” is quite predictable which has a little more substance.
I might predict that gray mice are better suited to wooded
environment than white mice. But I still couldn't say with certainty
what effect something like introducing a new predator might have on
the indigenous species there. Even natural selection is not “quite
predictable.”
But
the worst error lies in the comment, “If
a species lacks a certain trait that will allow it to survive, there
are two options: Either the species dies out or it develops the
missing trait” If
a species lacks a certain trait, why must it necessarily die out unless the trait evolves? Why can't it just continue in stasis? What
trait are humans waiting to acquire, for example? Are we doomed for
extinction or are we “working” to acquire this necessary trait?
This is a classic example of bifurcation.
What
makes it the worst, though, is that this wording gives the impression that
evolution is a directed process. If a species needs some particular
trait, somehow, natural selection will work toward acquiring that trait. That's absurd! Yet time and time again, this author gives the
impression that natural selection will do just that. For example, while discussing the Rat Snake, the author said,
“As
a result, rat snakes have had to adapt to their local environments in
an effort to avoid detection and hunt more effectively.”
In
the case of nylon-eating bacteria, the author said, “This
is a very simple example of natural selection, where the most basic
forms of life can adapt to whatever food the environment offers.”
Isn't that a hoot? According to this logic, if only birdseed is
available in some area, then the crocodiles there can adapt to eat
birdseed!
The
hilarious quotes keep coming when the author talks about humans. He
begins with the following:
“Are
humans still evolving? The simple answer is yes, even if the changes
are not obvious.”
Wait
a minute. I thought we were talking about examples of natural
selection. You can see yet again how careless evolutionists
shamelessly conflate natural selection with evolution as though they
are the same thing. Tsk, tsk. If this were the only time I've heard
that, I might chalk it up to misspeaking. However, this is rather
ordinary for evolutionists and I've discussed it many times before.
One
suggested example of “natural selection/evolution” among humans
is how people with “sickle hemoglobin” are resistant to malaria.
As before, the author hints that the trait was somehow created by a need
when he says, “The
mutation probably happened over hundreds of generations as a result
of the constant exposure to malaria and people contracting and
surviving it.”
That sounds rather Lamarckian, don't you think? That's about as
ridiculous as believing my children could inherit my resistance to
chicken pox since people have been contracting chicken pox for
thousands of years!
Besides
that, “sickle hemoglobin” is better known as “sickle cell
disease” or “sickle cell anemia.” Granted, it's true that
someone who suffers from sickle cell is resistant to malaria but
sickle cell comes with its own list of complications. Sufferers of
sickle cell usually have life expectancies much less than normal.
And by way of analogy, consider this: if I lost both arms, I would be
resistant to handcuffs. That might be preferable if I faced the
possibility of spending life in prison if I were ever arrested but
all other things being equal, I'd rather have my arms.
I
could go on but this post is too long already. Let me close by
reminding you of the quote I cited recently from Laurence Moran of
TalkOrigins.
“Scientists
such as myself must share the blame for the lack of public
understanding of science. We need to work harder to convey the
correct information. Sometimes we don't succeed very well but that
does not mean that we are dishonest. On the other hand, the general
public, and creationists in particular, need to also work a little
harder in order to understand science. Reading a textbook would
help.”
Mr.
Moran, I don't think we should “share” the blame; If the public
is confused about evolution, all the blame could be laid squarely at
the feet of your cohorts for their intentional conflation and equivocation when discussing the subject. Furthermore, I'm skeptical that
reading a textbook would help if it were written with the same
attention to details as this article.