Jeff's First Response:
Why not?
Intelligent Design, I would define this way: all the organisms that we
observe today were designed by someone (or something, or some group of
things) that was (and maybe still is) intelligent. All organisms were
created in essentially their current form, but not necessarily all at
the same time. Their genes were designed with a certain amount of
extra information that creates variations between individuals, so that
populations can adapt, to a limited extent, to changes in their
environment.
Now, with those definitions, let's make some predictions. I'm going
to list predictions of both theories in several areas, to emphasize
the point that Intelligent Design is at least as valid a scientific
theory as Evolution. If you would like to add more predictions that
Evolution makes, I'll add corresponding predictions for Intelligent
Design.
1. Fossils
A. Evolution predicts that the fossil record will be full of
innumerable transitional forms of organisms that show the slow
progression from simple forms to increasingly complex forms. From
fish to amphibian, from amphibian to reptile, from land mammal to
aquatic mammal, etc.
B. Intelligent Design predicts that organisms will appear in the
fossil record fully formed, and will remain relatively unchanged until
they go extinct or until the present time.
(Note that neither theory really predicts how many or how few fossils
will be found. That's a question for geology more than for
life-origin theories.)
The most notable aspect of the fossil record, for ID'ers, is the Cambrian explosion.
Before that, there was only single-celled life. [Long theorized, and predicted
by evolution, soft-bodied Precambrian worms have been recently discovered. This
completely matches the claims by scientists that fossils from this time are very hard
to come by. Scientists have also found the primitive Precambrian ancestor to the
mollusk. It has a foot, but no shell, early sponges, and arthropod embryos. They have
also found fossilized tunnels from worm like creatures. This is all between 10 and 60
million years before the Cambrian period. This is how long ago the large dinosaurs went
extinct so there is plenty of time to evolve into the explosion. New species appear
throughout the fossil record and are sometimes linked to their soft bodied ancestors.
These ancestors are very rare since it is unlikely they will fossilize. Further, in the
three most famous Cambrian sites, Greenland, China, and Canada, there is a growing
diversification of life matching the age difference of the three sites, roughly 5
million years between each. This is completely consistent with evolution. How does ID
explain the length of time it took to create the Cambrian explosion? 15 million years
is eternity to an intelligence capable of creating a human.]
Alright, it's true that soft-bodied organisms are unlikely to ever fossilize, though
some obviously have been, so let's restrict our discussion to hard-bodied, more easily
fossilized organisms. According to the
International
Subcommission on Precambrian Stratigraphy (ISPS),
the evolution from the first hard-part animals to the presence of most of the
present-day phyla was restricted to an interval of probably less than 10 m.y.
Multicellular life evolved at an incredible supersonic speed, and for this reason this
part of organismal evolution is termed the "Cambrian Explosion", or "Evolution's Big
Bang."
This rate of evolution is clearly not what Darwin predicted, or what anyone predicted
until the Cambrian Explosion was discovered, or they would not describe it as
'incredible.' Still, 10 million years does seem like a long time, so let's talk about
dates a little. How are these three Cambrian sites dated? All of them are sedimentary
rock, of course, which cannot be radiometrically dated. Quoting from the same ISPS
site,
Accordingly, the International Subcommission on Cambrian Stratigraphy (through its
Working Group on the Precambrian-Cambrian Boundary) made the official decision in 1991
to draw the base on the Cambrian at the first appearance date (FAD) of Trichophycus
pedum in the reference section at Fortune Head, southeastern Newfoundland.
This is the most common method of dating sedimentary rock - by the index fossils it
contains. I did some research about Fortune Head, and found information about two
layers in it that have been radioactively dated. They are both older than the Cambrian
Explosion, the younger is dated at 608 Ma. I found no mention of any layer that has
been radioactively dated after the Cambrian Explosion. From the picture linked to the
ISPS site, it looks like that's because the formation is sedimentary all the way to the
top. So the Trichophycus pedum fossils there could be any age younger than 608 Ma. I
can find no indication that any of the Cambrian sites you mentioned were radioactively
dated, they were all dated by the fossils in them. So, if the assumed ages of the
fossils are incorrect, then the ages of the formations are incorrect as well.
In some of the age discussions, I have seen mentions of fossil A being X meters
above fossil B. Is the number of meters between the fossils an accurate measure of
age? Only if we can determine that the sediment was deposited at a relatively constant
rate. But since all these formations have such exquisitely preserved fossils, everyone
agrees they must have been buried by floods which stirred up lots of sediment and then
deposited it all rapidly with the organisms inside it. So we actually know that the
sediment was deposited in fits and spurts, and there could have been any amount of time
between the individual floods. We really can't nail down the ages of these three
Cambrian formations with pinpoint accuracy, so they might have all been formed at the
same time, or even in the 'wrong' order with the most complex organisms being the
oldest.
Then, all of a sudden (in geologic terms), hundreds of diverse and complex life forms
appeared. These included trilobites, with fully-formed eyes very similar to modern
ones. There is no fossil evidence of any intermediate steps leading up to trilobite
eyes or any of the other biodiversity. [Even today there are creatures with
very simplified eyes that are consistent with eyes having evolved. The fossil record
also shows eyes of greater and lesser complexity. If eyes are made, why make inferior
ones?]
Humans make computers which vary vastly in complexity, from IBM's gigantic Blue Gene
supercomputer, to lowly cell phones, and even simpler embedded systems in cars. Cell
phones are much simpler and less powerful than supercomputers. If computers are made,
why make inferior ones? The existence of simple and complex eyes is no better evidence
for eyes having evolved than the existence of cell phones and supercomputers is
evidence that computers evolved. The existence of simplified eyes today makes the case
for evolution even worse. Why are there still simple eyes, if more complex ones are
superior? Why did trilobites, some of the earliest organisms, have such astonishingly
complex eyes, some with over 15,000 lenses? And why did they, so early in the fossil
record, have such a wide variety of types of eyes? The fossil record does not show a
nice progression from a few simple eyes to wider and wider variety and more and more
complexity. It shows a wide variety of eyes, from very complex to relatively simple,
existing from the beginning of hard-bodied life to the present day. It is far more
consistent with the hypothesis that all the eyes were designed by a common designer
than the hypothesis that all the eyes evolved independently or came from common
ancestors.
So, this seems much more consistent with the theory that all these forms of life were
designed and created at about the same time, than with the theory that they slowly
evolved over millions of years. This pattern is repeated with the sudden appearance
and disappearance of the dinosaurs. [Slow evolution is largely dead. I don’t
think any scientist today believes that evolution can only happen slowly. There are too
many examples of rapid evolution in the fossil record,
Alright, so here you agree that there are so few transitional forms in the fossil
record, not only during the Cambrian Explosion, but also at many other points, that
scientists have been forced to abandon the slow evolution proposed by Darwin and
propose a modified version known as Punctuated Equilibrium. Now, as I mentioned
before, Punctuated Equilibrium hypothesizes that evolution happens so fast that it
leaves no trace in the fossil record. So, how can we verify or falsify this theory?
The only way I can think of is to observe it happening. The theory states that
with an isolated population and strong selectionary pressure, species evolve quite
rapidly. I haven't heard many exact numbers of how many generations it should take,
but the
Wikipedia
mentions increasing limb length by 50 centimeters over 10,000 generations. (If you
know of a more reliable statement of how many generations we should consider, let me
know. It seems that if we go much higher than 10,000, then, in long-lived organisms
like elephants and turtles, the change should take long enough to be observable in the
fossil record) So, we should be able to take a short-lived organism, like bacteria or
fruit flies, isolate a small population, apply selectionary pressures, and observe the
evolution of a flagellum or stingers or something within a few years.
in laboratory experiments, and witnessed in the real world.
I found a
report
about the experiment that I just described. They took a single E. coli bacteria,
subjected it to selectionary pressure by putting it in a glucose-limited medium, and
observed what happened after 10,000 generations. They observed increasing diversity
over time, and also a few beneficial mutations that were selected for. ID'ers would
expect this result just as much as evolutionists. From the paper, it is unclear to me
what the beneficial mutations were, so correct me if I'm wrong, but it appears that
they did not involve the evolution of new genetic information, like some new protein or
new molecular pathway that allowed more efficient utilization of glucose. The
mutations were apparently things like sickle-cell anemia, which provides a particular
benefit against malaria, but makes the individual overall less fit. ID'ers believe
that such beneficial mutations can and do happen, the critical thing that they believe
cannot happen is new information, like new proteins, or new structures like a
flagellum.
I know of no such experiment that has demonstrated the evolution of new genetic
information. The bacteria experiment did not create any new species, or any new
function. Experiments have produced white-eyed and red-eyed fruit flies, fruit flies
with deformed wings, and fruit flies that have legs where their antennae should be.
None of these demonstrates the evolution of new genetic information that evolution
requires. Have any been done? If not, then Punctuated Equilibrium is an unsupported
hypothesis.
We know a sudden change in climate and environment killed the dinosaurs. We are almost
certain it was a meteor that hit the Caribbean. New England is known for all of its
deciduous trees that change colors in the fall. New England used to be covered in White
Pine. Settlers cut down all the pines and the deciduous trees rushed in to fill the
void. We know there were mammals living with the dinosaurs, but were mostly niche
animals. When many of the dinosaurs died they swept in. Mammals and small dinosaurs
survived.]
All of these are examples of one species taking over from another. They are not
examples of new genetic information evolving.
Evolution theorizes that amphibians evolved from fish. This means that at some point
there must have been some creature that would be classified as a fish which gave birth
to a creature that would be classified as an amphibian. [Only by assuming that
nature really lives in our convenient categories.]
That is exactly my point. Why does nature, in almost all cases, live in nice,
convenient categories? Quoting from Origin of Species, "Firstly, why, if species have
descended from other species by insensibly fine gradations, do we not everywhere see
innumerable transitional forms? Why is not all nature in confusion instead of the
species being, as we see them, well defined?" Darwin recognized that his theory would
suggest that nature should be a continually changing spectrum, but it is not. It is
easy and convenient to group animals into Fish, Amphibians, Birds, Reptiles, and
Mammals. Each of these classes shares not just one, but several traits that make them
easily definable. The few exceptions that there are, such as the duck-billed platypus
mentioned below, make the case even better for ID and even worse for evolution. The
duck-billed platypus does not appear to be halfway through the process of changing from
a mammal to a bird, it has fully-formed traits of both classes: a bill and webbed feet
similar to a duck's, fur similar to a beaver's, a leg structure similar to a lizard's,
and poisonous 'fangs' (on its legs) similar to a viper's. So which of the four is it
most closely related to? Whichever we choose, we must then assume that it
independently evolved to be similar to the other three, even though its closest
relative didn't. I have read on several evolutionist websites that evolution could be
falsified by "true chimeras, that is, organisms that combined parts from several
different and diverse lineages (such as mermaids and centaurs)". The duck-billed
platypus is a true chimera.
Obviously, the parent and offspring would have been very, very similar, somewhere in
between a fish and an amphibian, and the offspring of the offspring would have
continued to change over many more generations until they looked like modern
amphibians. The ID'ers point is that there should be lots of fossils that are hard to
classify because they are somewhere in between fish and amphibians. [Well, there
are. I assume by lots of fossils we are talking in relative terms. Fossils are
extremely rare themselves.
Extremely rare? Below, you say, "Now, compare that rarity to the fossil record and
even Darwin did not predict we would find so much." You are using the richness of the
fossil record as evidence for evolution, and, at the same time, its sparsity to explain
the lack of transistional fossils. Here are some examples of what Darwin said. I'm
piecing together several sentences from different parts of Origin of Species that refer
to the fossil record, which I think do not twist his meaning, but show accurately what
he said about fossils:
If my theory be true, numberless intermediate varieties, linking most closely all of
the species of the same group together must assuredly have existed... Consequently
evidence of their former existence could be found only amongst fossil remains...But, as
by this theory innumerable transitional forms must have existed, why do we not find
them embedded in countless numbers in the crust of the earth?...
Some fossils are claimed to be transitional forms, but we certainly do not have
'countless numbers'. Even relative to the number of known fossils, the percentage that
are claimed as transitional forms is very small.
We have many pre-humans, proto-humans, proto-chimps, where does Australopithecus fit?
The reason there is no missing link is because there are many. Even today, where does
the Platypus fit? The walking catfish? The mudskipper?
Do we really have that many missing links? In making the case for Punctuated
Equilibrium, the prominent evolutionist Stephen Jay Gould admitted that we do not:
"The extreme rarity of transitional forms in the fossil record persists as the trade
secret of paleontology. The evolutionary trees that adorn our textbooks have data only
at the tips and nodes of their branches; the rest is inference, however reasonable, not
the evidence of fossils"
As for all the pre-humans, proto-humans, and proto-chimps, please look at the diagrams
on
this site,
most notably the one that compares two of Ian Tattersall's diagrams of human
evolution. Notice that the new tree is even more full of question marks and dead ends
than the earlier one. It looks very much like adding 'epicycles' all over the place to
try to make the data fit the theory. The six cladograms from Science are also
interesting. Rather than seeing a nice progression from ancestor to descendent, we see
confusion and disagreement. This shows that the evidence from which the trees are
being constructed is either extremely fragmentary or outright
contradictory.
Genetics are causing biologists to reclassify species into new families because even
today it is hard to properly classify anything.]
This basically admits my overall point in "2. Genetics" below, that genetic analyses do
not match up with each other or with morphological analyses. It is not any harder
today to classify animals as fish or amphibians or birds than it ever was. What is
hard is deciding which families are most closely related.
This is the same thing we observe with human-designed machines. It is easy to
classify vehicles as planes, trains, or automobiles. But what if alien archaeologists
tried to decide which of them evolved from which? Automobiles and trains both travel
on the ground, so they might conclude that automobiles evolved from trains. But then
if they discovered that the rubber tires of automobiles are more similar to the rubber
tires of airplanes than to the metal wheels of trains, they might decide that
automobiles actually descended from airplanes. That would explain why some cars have
vestigial tail fins that don't serve much purpose. The aliens would have difficulty
deciding how the evolution happened because it really didn't happen. We observe a
similar difficulty in classifying human ancestors (and many other ancestor-descendent
relationships), so we could reasonably view that as evidence that the evolution didn't
happen.
But we have found many fossilized fish and amphibians, but no such intermediate forms
between the two. So the fossil evidence suggests that there was no evolution, and that
both fish and amphibians were designed and created. [On this entire planet
Darwin had to go to one extremely remote spot to see evolution. To be fair, he went to
several but one spot is so famous. Now, compare that rarity to the fossil record and
even Darwin did not predict we would find so much. We have found fossils that are not
one, nor the other. Have we found any that are exactly half way? I don’t know, and I
don’t think it really matters. If I see a train go into a tunnel, and then come out the
other end, I don’t assume a new train was created in between. And many of these tunnels
are very short.
I don't think the metaphor about a train going into a tunnel and coming out is a very
good representation of evolution. Let me propose a metaphor: If I see a train go into
a tunnel, and an airplane come out the other end, I wouldn't assume that the train
turned into an airplane.
Not only does evolution predict we will find these transitional species, but tells us
how deep to dig and in what strata to look. It is remarkably accurate. Scientists
decide they want to find the predecessor to birds, figure out about how long ago to
look, what areas would be good to look, and when one of these creatures are found that
IDers dismiss as not being a missing link, it is right where it was predicted to be
unless geology decided to play games and toss the site around.]
I haven't heard of any remarkably accurate predictions made by evolution. On the
contrary, I read things like
this:
Intermediates are not necessarily the same as the exact predicted ancestors; in fact,
it is rather unlikely that they would be the same. Simply due to probability
considerations, the intermediates that we find will most likely not be the true
ancestors of any modern species, but will be closely related to a predicted common
ancestor. Therefore, the intermediates we do find will likely have additional derived
characters besides the characters that identified them as intermediates. Because of
these considerations, when a new and important intermediate fossil species is
discovered, careful paleontologists will often note that the transitional species under
study is probably not an ancestor, but rather is "representative of a common ancestor"
or is an evolutionary "side-branch".
This suggests that actual findings are usually so different from expected findings,
that newly discovered species are usually not even claimed to be actual common
ancestors.
As for finding fossils in the predicted strata, strata are usually dated by the
fossils in them, as I discussed above. Thus, if paleontologists expect that a certain
common ancestor lived about 200 million years ago, and then they find a fossil similar
to the expected ancestor, they conclude that the layer it is in must be about 200
million years old. It's easy to be remarkably accurate when you conclude the same
thing that you assumed in the first place. I'm not saying that all the proposed dates
are wrong, but radiometric dating methods can only give rough estimates, when they can
even be used at all.
As for the very existence of fossils that are similar to proposed
intermediates, regardless of age, let's go back to our hypothetical alien
archaeologists. Let's say they found a 1940's era telephone, and a modern tablet PC,
and that they decide that the PC evolved from the telephone. Now they would expect to
find a machine that has an earpiece and a mouthpiece, like a telephone, and a
microprocessor and an LCD monitor, like a PC. They do some more digging, and they
uncover a cell phone. They are very pleased, because not only is the microprocessor
much simpler and the LCD screen much smaller than the computer's, showing how they were
in the process of becoming bigger and more powerful, but the earpiece and mouthpiece
are much smaller than the telephone's, because they are becoming vestigial, as the
machine changes its function from communication to information processing. But did any
of these machines actually evolve into any of the others? We know that they didn't.
This hypothetical situation is very similar to the real situation involving reptile
jaws and mammal ears. Once again, we can conclude that the proposed intermediates
might be examples of common design rather than common descent.
2. Genetics
A. Evolution predicts that DNA similarity between organisms should
reflect their common ancestry. Reptiles should be more genetically
similar to all other reptiles than to any birds or mammals, because
all reptiles evolved from one reptile ancestor. Apes and humans
should be more genetically similar to each other than to anything
else, because they share a more recent common ancestor with each other
than with any other species. DNA analyses of various areas of the
genetic code should generally point to one common evolutionary tree.
So Evolution predicts that the more DNA analyses we do, the more they
will reinforce the same evolutionary tree.
B. Intelligent Design predicts that DNA similarity between
organisms should reflect their common design. Many organisms should
share many genes, especially if they are designed to live in similar
environments, or if they function in similar ways. But the
relationships will probably not fit into one common tree. DNA
analyses of various areas of the genetic code will show that organism
A is most similar to organism B in some areas but most similar to
organism C in other areas. Some genes, such as the genes for eyes,
which almost all organisms need, will be shared among vastly different
organisms, like humans and squid. So Intelligent Design predicts that
the more DNA analyses we do, the more different relationships we
should find, including some that link organisms which appear to be
vastly different.
We mentioned briefly before that human insulin is most similar to that of pigs, while
our immune system is most similar to a rat's, while structurally, we are obviously most
similar to apes. If humans and apes shared a common ancestor more recent than their
common ancestor with any other animal, then all of our genes should be more similar to
those of apes than those of pigs or rats or anything else. [If all our genes
were the same as apes, we would be apes. Our genes differ by a fairly small amount. All
living things are something like %30 the same. The number of variations in genetics is
finite. It is not remarkable that given a finite number of variations there will be
matches with very distant relations. Somewhere on this planet is a car with the same
numbers and letters in its license plate as on mine. This is not astonishing and does
not mean we are related.]
I'm not sure how the license plate analogy applies. You're right, no one would
conclude that a car with the same license plate as yours was closely related to it.
The point I'm trying to make here is not how similar or different our genome
should be from chimp's. My point goes back to the hypothetical alien archaeologists
having difficulty establishing the relationships between planes, trains, and
automobiles. We have similar difficulties establishing genetic relationships, so it
could easily be because of the same reason. Planes, trains, and automobiles didn't
evolve from a common ancestor, so maybe humans, chimps, pigs, and dogs didn't
either.
Whales are another example cited by ID'ers. Evolutionists once believed that whales
evolved from Ambulocetus and several other extinct fox-like creatures. But then DNA
analysis showed that whales were much more genetically similar to hippos than to the
family that Ambulocetus belongs to (whose name I forget). Since various DNA analyses
have produced very different evolutionary trees than morphological analyses and other
DNA analyses, genetics supports common design much better than it supports common
ancestry. [Dr Tavison of Sweden,( I only know his name because it is a name I
have used for years believing I made it up), about 4 years ago discovered a fossil that
linked Hippos to Whales.
I can't find anything about Dr. Tavison on the web. Can you refer me to any more
information about him?
How would IDers explain why a whale has knees? It’s a foolish waste of time to add
something that has no use at all.]
I can't find anything that says that whales have knees. I found some sites that said
that some whales have a couple of bones in the pelvic area that the male reproductive
organs are anchored to, but nothing about knees.
3. Environmental effects
A. Evolution predicts that changes in the environment will create
selective pressures, which will in turn cause organisms to evolve so
that they are suited to the new environment.
B. Intelligent design predicts that when the environment changes,
organisms will adapt as far as their genes allow, but the adaptation
will be limited. If that limit is exceeded, they will simply become
extinct.
To quote one of your earlier emails: "Why is there so much diversity of life when we
know extinction is real?" We certainly have observed many species become extinct,
usually due to changes in the environment. We have not observed any new species
evolve. [That is not true. The first artificial species were created in the
1920s, and scientists have observed the formation of new species in the wild. Mice on
the island of Madeira have evolved into 6 new species over the course of only 500 years
completely naturally. Apparently along I-80 there is a new species that was
artificially created. Fruit flies have been evolved into new species by climate change,
artificial culling, and changing the process of natural selection.]
Ok, my original statement was not quite what I meant. What I should have said is, "We
have not observed any new genetic information arise." Speciation events depend on the
definition of species, which is disputed, even by evolutionists. One example of
speciation that I've heard about was an experiment that kept two populations of fruit
flies separated for several generations, one in a cold environment, and one in a hot
environment. After a while, when the two populations were reunited, they would not
mate with each other. Thus, by one definition of species, that meant that they were
now different species. However, I bet that if we put a population of Chihuahua males
with a population of Great Dane females, they will not produce any offspring. To avoid
getting sidetracked on a discussion of the definition of species, I suggest that we
focus on new genetic information. That is the key thing that we have not observed.
If information is being lost due to extinction, and not being gained by any process,
then my overall point of decreasing biodiversity is valid.
By the way, can you point me to some info about the new species along I-80?
I'm very curious about that, but I couldn't find anything about it.
Thus, the pattern that we see is one of always-decreasing biodiversity. Extrapolating
this pattern forward and back in time suggests that a very wide variety of life was
created at some time in the past, and that without intervention, all of it will
eventually become extinct. This supports intelligent design, and not Evolution.
[If diversity is eventually going give way to extinction and there is no new
speciation, then where is the Precambrian hippo or T Rex or human or house fly? Where
did these new species come from after the dinosaurs? Why are there creatures that look
like they are between animal types, but don’t have fossil records to show they were
there from the beginning nor around long enough to be much more than a
transition?
I didn't mean to imply that all life forms were created at the same time. I just meant
that decreasing biodiversity has been observed throughout recorded history. There may
have been many points in the past at which the intelligent designer created new forms
of life, such as the beginning of the Cambrian, the beginning of the Mesozoic, and the
early Cenozoic. If none of these events ever happened again, biodiversity would
continually decrease until it completely disappeared. Of course, that might take so
long that the sun might run out of fuel before it happens. I'm just saying that
recorded history has not observed natural selection creating new
information.
Why is the life in Australia so much different than anywhere else on earth? Evolution
says it is because of extreme isolation, but if there was one designer, wouldn’t
isolation be irrelevant?
Isolation is definitely relevant. The original ID hypothesis states that organisms are
designed with a certain amount of variability so that they can adapt to a limited
extent. Humans have demonstrated this variety very well by breeding Chihuahuas and
Great Danes. Isolation could certainly have a similar effect, and produce foxes,
coyotes, and wolves from the same original dog. The ID prediction is that isolation
could not produce a cat from a dog. The marsupials of Australia were probably designed
differently from other mammals, because we have never seen breeding produce a marsupial
mammal from a placental mammal, or vice versa. And because Australia is isolated from
the rest of the world, marsupials have not spread across the globe as many other
mammals have.
Why does the fossil record show a growth of diversification rather than a decline? Why
is life more complex the longer life has been on the planet?]
If the fossil record shows a growth of diversification, it could be because each
successive design event introduces a whole lot of new diversity. But the fossil record
shows some stunning decreases of diversity, such as the mass extinction at the end of
the Mesozoic, and the end of the Paleozoic. The Cambrian Explosion seems to have
produced every modern phylum, plus several that have become extinct. So if we measure
diversity by the number of phyla, then we do see a decline rather than a gradual
growth. As for variations within genuses or species, we would expect those to increase
over time if the originally created organisms had variability built in to their genetic
code, which the ID hypothesis states.
4. Irreducible complexity
A. Evolution predicts that organisms evolve through long sequences
of small mutations. Thus all the complexity and diversity of life
that we observe must have arisen through many, many steps, every one
of which produced a survival advantage. If any structure or system
that we observe is irreducibly complex, meaning that it could not have
arisen through this process, then Evolution is falsified. So,
obviously, Evolution predicts that no such structure or system will be
discovered.
B. Irreducible complexity is very typical of things designed by
human intelligence. A computer, for example, must have at least an
input device, a processing unit, and an output device in order to
serve any purpose. A radio is an even more significant example. Not
only does a radio receiver have a certain minimum number of parts, but
even a complete receiver is useless by itself. There must be a radio
transmitter, which is a completely separate and completely different
machine, transmitting a signal for the receiver to pick up.
Television is the same way. So, Intelligent Design predicts that we
will observe many biological structures and systems, and even
inter-special dependencies, that are irreducibly complex.
This seems to me to be one of the ID'ers strongest points. The bacterial flagellum
certainly does seem to be an irreducibly complex electric motor. Of course, if it were
the only example, we could dismiss it. But we observe apparently irreducible systems
everywhere: eyes (of which there are several varieties)[We have both living
examples today and fossil evidence that eyes have evolved. Therapsida is a lizard with
a double joint jaw. The lower jaw is mammalian and the second joint bones have already
begun shaping themselves into the tiny bones of the inner ear. Irreducible complexity
is a valid concern if simpler steps are found that cannot have existed. So far, that
has not been the case. Not having found all the steps does not mean there are
none.
True, there is not yet a rigorous proof that eyes could not have evolved. But we have
zero evidence of the steps that led to trilobite eyes. When a theory requires hundreds
or thousands of steps that we cannot even imagine, and we have no evidence for any of
those steps, isn't it more reasonable to believe the much simpler explanation that eyes
were designed and created just like video cameras were?
In these examples, we have the steps. Irreducible Complexity also ignores factors such
as strong and weak nuclear forces, gravity, chemistry and the atomic structure. Sure
there are millions of possibilities if only the combinatorial factor is considered, but
hydrogen and oxygen will almost always make water if they get close together. This does
not require a designer to make water. Proteins have preferred orientations just as
atoms do.],
What do you mean by this? Do you mean that proteins form spontaneously when amino
acids get close together? Do nuclear forces, gravity, chemistry, or atomic structure
cause molecules to spontaneously form into irreducibly complex machines? I have never
heard anyone claim either of these things.
ears, the digestive system, the cardiovascular system (including the blood clotting
mechanism, without which any organism would almost certainly bleed to death before
reaching maturity), the musculoskeletal and nervous systems (which I put together
because either of them would be useless without the other), wing-powered flight, sexual
reproduction, etc. [If it could be demonstrated that any complex organ existed
which could not possibly have been formed by numerous, successive, slight
modifications, my theory [of natural selection] would absolutely break down. – Darwin.
I do not know the research state of every one of these points, but I do know that there
is a lot of money and fame for the person who can point out a system that violates
Darwin’s statement. Digestive systems abound of simple types like flies to
astonishingly complex like a cow’s. Dinosaurs have been found with stones where their
stomachs would be indicating they have the same digestive system birds have. Flying
squirrels and snakes may be intermediate steps to flight; ostriches have feathers and
wings, but don’t fly. Are they built by design?
Well, as you point out below, ostrich wings do serve a purpose. They don't work for
flying, which is what wings are usually for, but they do have a minor purpose. Have
human designers ever done anything similar? Yes. Drag racers have a wing which
functions similarly to an airplane's wing, but does not allow the vehicle to fly. It
serves a different purpose on the drag racer than on the airplane. Also, wings are
very necessary for an airplane to fly, but not necessary for a drag racer to drive. It
could still drive around without them, just not quite as well.
What I’ve often wondered, and science is beginning to answer this, did birds learn to
fly jumping into a tree, or jumping out of a tree. It turns out to be most likely
neither. Feathers are scales with hollows in it. It’s the same stuff. Some dinosaurs
developed feathers to keep warm not to fly. As they ran around on the ground chasing
prey, they started waving their arms to grab their food. The additional thrust from the
feathered arms gave them an edge in feeding over those that did not.
If a bird-like creature ran along the ground, and waved its arms in the same motion
birds use to fly, wouldn't the majority of the thrust generated by the wings push it in
the opposite direction that it was running, thus slowing it down?
Those that ate more had more offspring who themselves evolved this flapping motion to
catch prey. This edge became more and more powerful until one left the ground all
together. Now, Evolution makes this prediction. If birds evolved from lizards trying to
catch prey, their wing beat pattern should be one of reaching out to grab something and
pulling it in. This is exactly the motion of a bird flap. Flightless birds should also
flap their wings to help them run faster and maneuver better, which is exactly what
happens. Does this make it the only answer? No, but it shows evolution made a
prediction, it was studied in a lab using high speed cameras, and birds flying and
animals grabbing are the same motion.]
Have we ever observed any feathered animal flapping its wings to catch flying insects?
Many computers have the same chip architecture, the x86 family, for example. This
architecture has been shown to be inferior to a RISC architecture, but most personal
computers still use it. The repeated use of this same architecture does not show that
they all evolved from a common ancestor.
There are also inter-special dependencies, like bees and flowers, humans and intestinal
bacteria, and wasps and figs. Now, in many of these cases, there are examples of
similar but less complex things, like bacterial cilia for the flagellum, and the worm
digestive system for the human digestive system. But all of these things would require
not one or two, but thousands of intermediate steps to be developed through small,
random mutations. It is difficult, if not impossible, to even imagine how every one of
the thousands of intermediate steps could have provided a selective advantage.
[I think the wing example is a good one where, even if it proves to be false, it
is a great example of how unrelated advantages combine in the end to be a unique
advantage that is greater than the sum. It’s also important to be aware that a change
does not have to have any advantage to be there.
I thought changes did have to be advantageous. The mechanism of change in evolutionary
theory is natural selection, which selects changes that cause advantages. Any
mutations that do not cause advantages will be lost in the random shuffling caused by
sexual reproduction. If you put a wide variety of purebred dogs together, the
offspring will all tend to look more and more similar in successive
generations.
Why are birds so colorful? There’s no advantage to being colorful except to attract a
mate. On top of that, they had to evolve colored vision in order to take advantage of
being colorful. I don’t know there is an answer.
An excellent example of irreducible complexity. The system has 3 components:
1. Colorful plumage
2. Colored vision
3. Female instincts find colorful plumage attractive.
Remove any one of these, and the other 2 are useless. By the way, instincts in general
are a good example of irreducible complexity. For example, it is hypothesized that the
evolution of the eye began with a light-sensitive skin patch. Imagine that you had a
light-sensitive skin patch. What would you do with it? Would you try to move toward
light? away from light? Wake up when it got light? Wake up when it got dark? The
first individual to have a light-sensitive skin patch must also have an instinct that
makes it do something beneficial in response to the light, or the light patch is
useless and therefore not selected for. While it is extremely unlikely (maybe even
impossible) for either of these things to appear all at once, it is exponentially more
unlikely for them both to appear at the same time in the same individual. For
evolution to be true, history must be full of such impossibly unlikely
coincidences.
On the other hand, other species have adapted to the fact that birds see color. This is
easy to imagine. Two salamanders are born, one with red stripes and one with green
stripes. The birds eat all the green striped ones and leave the red ones because it
looks like this other creature that is poisonous. It doesn’t take long for there to be
no more green ones except in rare mutations that try to get that back.]
Actually, this is not as likely as it appears at first glance. If birds saw in black
and white at one time, and then evolved the ability to see color, the salamanders would
have had only a few generations to evolve coloration similar to the poisonous creature,
or they would all be eaten. Unless some of them were already colored like the
poisonous creature before there was any advantage to being colored that way, they would
probably become extinct. And matching the coloration of a poisonous creature by chance
is another highly unlikely coincidence.
Secondly, if the birds couldn't, at one time, tell the poisonous creatures
apart from harmless salamanders, then they must not have eaten either one, or they
would have all died from eating poisonous creatures. Once they got colored vision, why
did they decide to start eating green-striped salamanders? And how did they know which
color was safe to eat? Again, it's remotely possible, but seems very
unlikely.
And even if we could imagine it, we have not found any fossil evidence of the
intermediate steps between wingless mice and winged bats. [Karen Sears, at the
University of Colorado Health Sciences Center in Denver, has discovered that the change
from mice to bats is only one gene. This discovery was made less than a year ago, but
explains why bats evolved so rapidly. Once this gene change occurred, the evolution to
bats would have required very few transitions. Very few bat fossils exist at all though
there are an enormous number of bats. Small + delicate + forest environments with
acidic soils = low possibility of preservation. Many teeth have been found that link
bat like teeth to hedgehogs, shrews, and moles, but we only have the
teeth.]
That's a fascinating experiment, thanks for pointing it out. Apparently, an increase
of 50 cm in limb length could happen in much less than 10,000 generations.
However, saying that this one gene changes a mouse into a bat is a gross overstatement
of the facts. Karen Sears did not make bats out of mice, she made mice with really
long fingers. How well do you think a mouse with really long fingers would survive in
the wild? It would be at a great disadvantage to other mice, and it still cannot fly,
so it would certainly be selected against. Even being able to change much more than we
ever expected could happen in one generation, bats almost certainly could not have
evolved in this way.
On top of that, according to the evolutionary tree, many of these systems must have
evolved many times. For example, wing-powered flight must have evolved four times, in
birds, bats, pterosaurs, and insects. [If there is an intelligent designer,
wouldn’t one mode be sufficient? Why create such different methods?
What different methods? I gave four examples of wing-powered flight. I didn't give
any examples of combustion-powered flight (like rockets and missiles), or rotary flight
(like helicopters). My point is that it seems hard enough to evolve flight once, and
it would be exponentially harder to do it four times. For example, if I told you that
I won the Powerball jackpot, would you believe me? Probably. Somebody has to win it,
right? What if I told you that I won the Powerball jackpot four times? What about 40
times? You would never believe me. Even if I showed you incontrovertible proof, you
would assume that I cheated somehow. It's simply too improbable to be believed. And
yet, you will believe, without a shadow of a doubt, that eyes evolved independently not
just once but 40 separate times?
Why give these methods to creatures that never use them? Evolution predicts exactly
that there will be various ways to do anything. The more possible ways to fly there
are, the more likely there will be flying creatures. The forms of motion that are most
varied are also most common. There are more ways to walk than fly, and there are more
walking creatures than flying. There are more ways to swim and so more swimming. Bats
do not fly in a grabbing way. They flap up and down and let the leather wings change
shape as they flap doing the work automatically that birds require a complex motion to
accomplish. Why make things so hard on the birds?]
I can't find anything that says that bat flapping is that different from bird flapping.
According to
the Department of Zoology at the University of Cambridge,
"Birds and bats shorten their wing span by drawing them toward the body during the
upstroke and extend their wings during the downstroke." That makes it sound like they
both fly basically the same way. If they are different, it could be because bats tend
to fly differently than birds. It seems like birds spend more time soaring, and bats
spend more time flapping and quickly changing direction. Are the feathered wings of
birds better for soaring, and the leathery wings of bats better for maneuverability?
Yes, check out
this great list
of praises of the superb design of birds. (Funny how he praises the design of
birds, even though he believes in evolution) Especially note the part where he says
that they are better than bats. Clearly, what is 'best' depends on how you look at
it.
There are at least five types of sexual reproduction. Eyes, according to one
evolutionist, must have evolved between forty and sixty times. [and is still
evolving. This is true with everything.]There are 300 known species of fig
wasps, almost all of which pollinate one and only one species of fig tree! (The whole
fig wasp thing is a truly astonishing story that deserves more discussion later.)
[yeah, and fleas that only infest rabbits and reproduce at the same rate.
There’s a lot of cool and astonishing things out there. I definitely share your
awe.]
It's amazing to me that you can see such incredible designs all around you, and be awed
by them, and still be positive that they arose randomly. It is far more likely that
the heads on Mount Rushmore were created by random wind and rain than that life was
created by random processes and natural selection, yet you are sure that Mount Rushmore
was intelligently designed, and at the same time sure that life was created by random
processes and natural selection. That must take a lot of faith in natural selection.
So, because irreducible complexity appears to be astonishingly common, it supports
intelligent design much better than Evolution. [Irreducible Complexity turns out
to be not so irreducible.
Really? You haven't presented any plausible explanation of how any of the systems that
I mentioned could have evolved through tiny steps. The explanation of how birds
evolved feathers and flight seems implausible and contradictory.
Doesn’t the enigma of bats speak more for evolution than for Intelligent
Design?
By the enigma of bats, are you referring to the following, from
an article about Karen
Sears?
Bats have been an evolutionary enigma. That’s because the oldest fossil bats look
remarkably like modern ones, each having wings formed from membranes stretched between
long fingers, and ear structures designed for echolocation. No fossils of an animal
intermediate between bats and their non-flying mammal ancestors have been found.
Only an incredibly dogmatic belief in evolution could possibly think that those things
speak more for evolution than Intelligent Design. As far as the evidence shows, bats
are marvelously well-designed for maneuverable flying, and for tracking insects in the
dark, and have always been so. But I may be misunderstanding your meaning, because
your next question doesn't make sense to me at all. Please elaborate on what these two
questions are referring to.
Why aren’t all creatures like bats in the fossil record? Wouldn’t a designer capable of
such incredible complexity get things right the first time? Why have inferior stepping
stones of digestive systems and eyes if you can just make a good one? Why do birds have
to eat rocks to digest food? That’s incredibly primitive.]
Primitive? What is more abundant and easy to find than rocks? Don't we wish
we could fuel our cars with something as abundant as rocks or garbage, like Doc Brown
does in Back to the Future 2? Unfortunately for us, we can only use a highly purified
form of a substance that we don't know how to produce. If we don't invent engines that
can run on a more abundant or renewable fuel source, we could be in trouble.
Inferior digestive systems? A cow's digestive system is much more complicated
than ours, does that make it superior? I'm sure glad that I don't have to spend most
of my day re-chewing grass that I've already eaten. Still, if we did have to live only
on grass, we'd be pretty jealous of a cow's digestive system. As we saw before with
birds and bats, what is superior and inferior is relative. It all depends on how you
look at it.
Alright, I'll leave it there for now. If these points are scientific, then ID'ers do
know at least something about science. [To my knowledge there is only one peer
reviewed scientific paper on ID vs. Evolution. It has been shredded. The paper didn’t
even support ID, just attacked Evolution. Two books have been written by scientists and
have likewise been shown to have little basis. Irreducible complexity has been
discredited in both the scientific community and the philosophy of science community. I
didn’t even know the last community existed.]
You ignored the criteria that I proposed for determining whether ID'ers know anything
about science. Why is it not a valid criteria? As for peer-reviewed journals, how
many papers did Copernicus publish in peer-reviewed journals? There might not have
been any at the time, but suffice it to say that his ideas were shredded, discredited,
and rejected. Does that mean he didn't know anything about science? More
significantly, did that mean that his theory was incorrect?
We could spend a long time debating about whether the journals are biased, but
that would be an irrelevant waste of time. I would much rather that we focus on the
science, rather than arguing about who is or is not biased.
In fact, like I said, it seems to me that science is generally (maybe even completely)
on their side. [To this, I of course completely disagree. I see it like this.
Why is such a powerful being so slow, I mean 15 Million years? That’s a long
time.
In an effort to keep the discussion focused, I have avoided talking about time and
dates as much as possible. If you're going to use that as a reason not to believe in
intelligent design, maybe we'll have to get into that, as I did above with the Cambrian
Explosion. But, in general, why shouldn't an intelligent designer take a long time to
do things? If you've got all of eternity, what's the rush?
Why so many failed experiments? If these things are not intermediary or transitional
creatures, they must have been designed to do nothing particularly
well.
What creatures are you referring to? The ostrich is a remarkably good runner. The
penguin is a remarkably good swimmer. The walking catfish can "
thrive where many fishes cannot.
" If these things do nothing particularly well, then natural selection should have
eliminated them.
Why so much waste? Why do I have a tail bone?
You have a coccyx to "provide an attachment for muscles, such as the gluteus maximus,
and also serve as something of a shock absorber when [you] sit down" (from
the Wikipedia).
Why do I get goose bumps?
Maybe if we researched them a little more, we would find a purpose for them, just like
we have with 'junk DNA'. Maybe they are similar to pain - they warn us that we are
getting too cold. Maybe they concentrate blood near the muscles so that we are better
prepared to make a quick sprint to escape danger. Maybe they do warm our muscles a
little, just not as much as they would if we had fur. If they are left over from our
chimp-like ancestor, why don't we get them when we are sexually aroused, like chimps
do?
Why do whales have the remnants of legs?
Whales have two bones to which their reproductive organs are anchored. It's quite a
stretch to call them remnants of legs.
Why do new creatures appear seemingly randomly?
Do they appear randomly? In what pattern should they appear, if they are intelligently
designed?
Why do these new creatures get more complicated with time?
Does the fossil record show monotonically increasing complexity? Is a chimp more
complex than a stegosaurus? By what measure are we determining
complexity?
Is this intelligence learning as he goes?
Maybe. ID doesn't say that he/she/they isn't/aren't. (I personally believe that he
isn't.)
Why do we worry that small pox can evolve from cow pox?
I don't know. Maybe we have no need to worry.
Why is some intelligent being messing around with mice on Madeira?
Is he? Are we sure that all the mice on Madeira started as one species? Are we sure
they aren't still one species? The article about them that I found said that they were
going to try to interbreed them, but I can't find any info about the results of the
interbreeding. The common house mouse species is known to have a variable number of
chromosomes, from 22 to 40, and all the mice on Madeira are within that
range.
Why make giraffe necks with the same number of vertebras as us?
Why not?
Couldn’t an intelligent designer predict that this would cause them problems drinking
water?
Would more vertebra prevent blood from rushing to the head when it is down? It sure is
a good thing that giraffes have
"One highly
specialised vessel near the brain [that] acts as a sponge, slowly absorbing blood to
the point where pressure warns the animal to lift its head before damage occurs."
That sounds like a very careful design that allows an amazingly tall animal to drink
without killing itself.
More vertebras would have let them bend their necks better.]
Why do they need to bend their necks better? They would have to lower their head just
as far to drink no matter how many vertebra they had.
I know you disagree, so how would you respond to each of these points? And what other
points do you think support Evolution better than intelligent design? [There
are two aspects of ID that I have troubles with. It makes the assumption that if we
don’t know everything and see everything then there must be some designer to fill the
gap.
Evolution makes the assumption that if we don't know everything and see everything then
random mutation and natural selection must fill the gap. Why is it any less reasonable
to fill the gap with design than to fill it with natural selection?
The second is the circular and largely negative arguments. For example, I could say
that computers must have always existed because they are too complex to design without
one.
This is a common misunderstanding of the ID hypothesis. The hypothesis is not that
biological life is too complex to have been created by anything but biological life.
The hypothesis is that biological life is too complex to have been created without
intelligence. Life and intelligence are two entirely different concepts. Humans
happen to have both. Intelligence, in this sense, is not anything like IQ, it is more
like free will. It is the ability to choose a goal, develop a plan (aka design) to
achieve it, and influence matter and energy to implement that plan. ID'ers do not
speculate about the origin of intelligence, since they don't know of any scientific
ways to verify any such hypotheses. However, if you want my hypothesis, it is that
intelligence, just like matter and energy, cannot be created nor destroyed, but has
always existed. We don't remember our existence before we had a biological body
because memory is a function of our brain, not our intelligence. That intelligence has
always existed is not a circular argument, and it is very consistent with what we know
about matter and energy.
Well this is simply ridiculous. Of course we built up computers slowly over time adding
complexity as we go. If we do this with things we create like radios and computers and
houses, why assume an intelligent designer doesn’t do the same thing? And if there is
an intelligent designer manipulating genes and natural selection in order to create a
human from a pre-ape creature, it doesn’t make any difference to Evolutionists who is
behind this system, just how to understand it and use it.]
Maybe an intelligent designer does do the same thing we do. But how similar is the
'evolution' of man-made machines to evolution by random mutation and natural selection?
How many random changes did it take to get from Quake to Unreal Tournament? The games
are admittedly very similar, but if you took the Quake executable (or code) and started
randomly changing, adding, and removing bits, there is probably no way to get to Unreal
Tournament, or any other game, through a sequence in which every step is also a
functioning game. And even if there were some such path, that is most definitely not
how Unreal Tournament, or any other game, was written. Human-designed machines
(including programs) can be put into a nested hierarchy, like life, and can be seen to
progress from less complex to more complex, which is maybe like life, but they were not
(and probably could not be) produced by random small changes and natural
selection.
(If any of this sounds accusatory, I really don't mean it to be. I mean it to be calm
and scientific. And I know this is another long one, so respond at your convenience.)
[No offense taken or meant. I have learned a lot so far from just a few e-mails.
I think this is fun.]
Oh good, I'm glad you think so too. I've learned tons of fascinating stuff.
I'd like to make a quick addendum to my last email. Most of the things I discussed are
more like explanations of things that have been observed rather than predictions about
things that we will observe. (Of course, Evolution similarly explains rather than
predicts most of the time, as do many scientific theories.) [I find the
explanations of ID to be more confusing than less. So much evidence that must be
ignored,
What evidence must be ignored? ID'ers certainly don't advocate ignoring any evidence.
All they advocate is a re-interpretation of the evidence. For example, homology is
re-interpreted as evidence of common design rather than common descent. All new
scientific theories do the same thing. Einstein's theory still predicts that an apple
will fall to the ground, but it reinterprets that as evidence of the earth warping
space, rather than evidence of the earth pulling on the apple.
such inefficient design that must be accepted, a designer that is learning as he goes
along, Leftover pieces that have no business in creatures that would never have used
them. These do not make sense to me.
Most vestigial structures have been discovered to have uses. ID makes the prediction
that we will eventually find uses for all the other structures that we don't yet know
the purpose of.
There is a lot we do not know, but every time evolution predicts that we will find
something at about this age, it’s there. I don’t mean that every time we look, we find,
but rather that everything we find is right where it’s supposed to be.
This is a huge overgeneralization. First, evolutionists are constantly deciding that
such-and-such-thing happened earlier than expected, and being surprised by things like
living coelacanths. I'll look up some more specific examples if you'd like me to.
Secondly, in many cases, the reason that things are right where they're
supposed to be is because of the circular dating methods mentioned earlier. If you
have troubles with circular arguments, why doesn't it bother you that evolutionists use
circular reasoning to date rock layers and the fossils in them?
What evidence have we found that fits ID and not Evolution? Where has ID led us to find
something not predicted by Evolution? ID and Evolution look at the same thing and
agree. We have the same DNA, but the explanation of why is different. But where did
Evolution fail to predict or explain a new finding? How did ID explain or, more
importantly, predict that finding? I’m really curious because I have only seen proof
through the lack of evidence. I have never seen evidence that contradicts
Evolution.]
The evidences that fit ID and not Evolution are what this whole document started as.
To recap:
1. The fossil record shows sudden appearances, disappearances, and long periods of
stasis.
2. Genetic family trees often conflict with each other and with morphological
trees.
3. We have seen loss of information due to extinction, but no information gain.
4. Many biological systems appear to be irreducibly complex.
And some predictions:
5. All DNA will be found to have some purpose.
6. All apparently useless organs will be found to have some use.
7. The sum of genetic information in all organisms will continually decrease, unless
the intelligent designer comes back to increase it again, or humans figure out how to
increase it. Thus, until we do so, it is important to preserve what we have.
As for positive evidence that contradicts evolution, I'll address that at the very end
of this document.
But in reading through the ID literature, I've found that many ID proponents make a
very scientifically testable prediction. We have found that only about 2-5% of DNA
encodes for proteins. Evolution theorists have predicted that the other 95-98% of DNA
is leftover junk from the haphazard evolutionary process. [That’s not entirely
true. Evolutionists say that there is more to our DNA than is needed and posit that
introns are necessary to help scramble genes. The introns are believed to be the
scratch pad for evolution. This, in turn, allows evolutionary processes to develop that
are more complex than just changing one thing at a time. It also allows for storage of
a new sequence within the species that allows for transitional species. This has been
studied in bacteria. Furthermore, the Center for Advanced Research in Biotechnology
last year discovered that life did not begin with introns, but rather picked them up
later. Quoting from the press release. “The CARB analysis shows that the probability of
a modern intron's presence in an ancestral gene common to the genes studied is roughly
1 percent, indicating that the vast majority of today's introns appeared subsequent to
the origin of the genes.” Why did a designer suddenly need a mechanism that aids
evolution, was not needed in the beginning, and is seen to have changed over time?
Have they changed over time? That is not what the quote says. What the quote says is
that it is very unlikely that all the modern genes they studied inherited their introns
from a common ancestor. Their conclusion is that all the modern genes must have
evolved introns independently. The logical ID conclusion, on the other hand, is that
the modern genes did not inherit their introns from a common ancestor because they
don't have a common ancestor. Which conclusion is more likely? How likely is it that
all 10 modern families of genes independently stumbled onto the concept of introns?
Also, the
next post on
pandasthumb
contends that bacteria actually do have introns, although they are rare. If the CARB
analysis can still be trusted, this means that bacteria also must have evolved introns
after the split, since eukaryotes did not inherit the introns from
bacteria.
Also, who among Evolution theorists call any DNA junk? I can’t find where that started,
just a bunch of scientists saying it’s not junk?
I quote from
pandasthumb.org:
An article in May 23, 2003 issue of Science, “Not Junk After All”, by Wojciech
Makalowski states:
“Most researchers have assumed that repetitive DNA elements do not have any function:
They are simply useless, selfish DNA sequences that proliferate in our genome, making
as many copies as possible. The late Sozumu Ohno coined the term “junk DNA” to describe
these repetitive elements.”
“Although catchy, the term “junk DNA” for many years repelled mainstream researchers
from studying noncoding DNA. Who, except a small number of genomic clochards, would
like to dig through genomic garbage? However, in science as in normal life, there are
some clochards who, at the risk of being ridiculed, explore unpopular territories.
Because of them, the view of junk DNA, especially repetitive elements, began to change
in the early 1990s. Now, more and more biologists regard repetitive elements as a
genomic treasure.”
So apparently a peer-reviewed journal believes that lots of DNA was called junk, and
that the term did stifle DNA research for 'many years.' Fortunately, there were a few
scientists who were willing to go against mainstream thought and risk ridicule to prove
that mainstream thought was wrong.
We are finding uses for it, and the uses are to enable evolution.]
Are you referring here, to the hypothesis that introns make break and rejoin events
more likely to be successful? I saw some discussion of that on pandasthumb, but no
links to scientific papers about it. I would be interested to read some if you know of
any. I have lots of questions about it. First, how does the introduction of an intron
provide a selectionary advantage? If it only provides the possibility that an
organism's descendents can break and rejoin their genes more easily, then it does not
directly benefit the organism that first got it, and thus will not be selected for.
Second, how similar is the number of introns found in modern genes? If they are only
padding, the number should vary widely between species, and possibly even between
individual organisms. If the number is quite consistent, then introns would make an
excellent case for design of something that random mutation and natural selection could
not produce. Third, have we observed this breaking and rejoining process? Fourth, how
much variation can this process produce? Does it allow the kind of variation that we
see between dog breeds, or does it allow the kind of variation that could produce new
organs and functions?
ID proponents predict that the intelligent agent(s) would not have thrown so much
garbage into the design. A few portions of DNA may have degraded since they were
designed, in accordance with the Second Law of Thermodynamics, such as our broken
vitamin C-production system. But since DNA is obviously very good at preserving
itself, most of it should still be functional. Therefore, ID predicts that we will
discover that most of that junk DNA is actually useful. [If all the DNA is from
a designer and some DNA has been lost, shouldn’t IDers predict %100 of DNA is useful?
No, because any particular gene can be rendered useless by just a few incorrect
nucleotides. But the entire gene will be still be copied by the transcription process.
Just like if a single bit in an executable became corrupted by a bad copy, it might
render an entire function useless. If the program was well designed, the program could
continue to run without that function, but future copies would continue to copy the
now-useless function. This is what appears to have happened with our gene that should
allow us to produce vitamin C:
Recently, the L-gulano-γ-lactone oxidase gene, the gene required for Vitamin C
synthesis, was found in humans and guinea pigs (Nishikimi et al. 1992; Nishikimi et al.
1994). It exists as a pseudogene, present but incapable of functioning (see prediction
4.4 for more about pseudogenes).
If natural selection works, shouldn't it have prevented guinea pigs from losing that
functionality? Or helped them regain it?
Also, the second law of thermodynamics is often misused in this context. I could no
more say that a mountain erodes due to thermodynamics. The closed system would have to
encompass the entire universe, but at that scale the equations would be so complicated
and chaotic as to be meaningless.]
You certainly could say that mountains erode due to thermodynamics. I thought all
scientists believed that. Stones do not fall up mountains when wind or water dislodge
them, they fall down, tending towards the most uniform arrangement (flat plains). Yes,
it's true that the earth is not a closed system, but it generally radiates as much heat
into space as it gains from the sun, so overall, it very closely approximates a closed
system. We observe ancient buildings and mountains crumbling all the time, but we do
not observe rocks building either of them up. (Well, mountains do get pushed up, but
that is by other processes that are evening out the energy in the Earth's core, which
is still in accordance with the Second Law.) The Second Law would be entirely useless
if it only had any applicability to closed systems, since no such system exists (except
maybe the entire universe, but as you said, that's too complicated to analyze). The
reason that the Second Law is useful is that if we observe any arbitrarily chosen
system, it will usually apply, even though the system is open. The two notable
exceptions to this are the products of human intelligence (i.e. factories), and
organisms, which both routinely create localized pockets of uneven heat distributions.
(There are lots of minor cases where order arises, such as snowflakes and convection
currents, but the order created in these cases is orders of magnitude less than in
factories and living things, so they really don't belong in the same category.) Now,
since we know that one of the major anomalies (factories et. al.) is the product of
intelligent design, Occam's razor would suggest to us that the best conclusion is that
the other major anomaly (life) is also the product of intelligent design. That
conclusion would give us one concept (intelligence) that explains all the systems that
can routinely create large amounts of localized order.
I would also like to point out that ID is often accused of trying to stifle scientific
research by simply declaring that 'God did it,' but this is an example of ID suggesting
avenues for further scientific research. All sorts of DNA experiments are going on
right now, and I can't wait to find out what they discover. [Uses for so called
junk DNA have been found, but since Evolution does not predict how much is used or not,
Evolutionary microbiologists and cellular scientists are happily researching this area.
Junk is a misnomer, but there is a lot of DNA that is not used as the blue print for a
creature. It doesn’t mean it is junk, just used for something else. If there were a
designer, wouldn’t all DNA be used for replication and any other use evidence that
there is not a static design? ]
I'm not sure what you mean by this question. DNA does get replicated, but that is not
its purpose. Its purpose is to encode the information necessary to build an organism.
What other uses are you referring to? Please elaborate.
If it turns out that most of our DNA really is useless junk, I'd be ready to abandon
ID as a scientific theory. But if it turns out that most of it is useful, I think it
would be strong evidence for the truth of ID. [How about if introns are found to
be the mechanism behind many of the complexities in Evolution that have IDers
puzzled?]
Sure, if it can be shown to be likely that all or most of the information in DNA was
created by random mutations, natural selection, and introns, then I would concede the
argument. Showing this would involve answering all of my above questions about
introns, and proposing at least one possible pathway that could lead to something that
is apparently irreducibly complex, like the bacterial flagellum, analyzing the
probability of each step in that pathway, and showing that, given the number of
organisms and the time that has passed, there is at least a 1 in 10 chance that such a
pathway would have been followed. I know that's asking a lot, but there a lot of
reasons to believe in intelligent design, so I think it's fair.
Now, I mentioned above that I would address your request for positive evidence that
contradicts evolution. I have shown at least 4 general topics that I think fit
Intelligent Design better than Evolution, but apparently those are not what you are
looking for. So, besides inventing a time machine and going back and observing what
happened, what would you consider to be positive evidence that, if found, would
effectively falsify evolution? I just gave an example of something that would cause me
to cede the argument. What would cause you to concede?
That’s all for now. If you’re interested, I found
www.pandasthumb.org
very interesting.
Yes, I've read through several pages on pandasthumb. I generally don't like it because
it involves a lot of flaming. Here is
my favorite ID
site.