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2005 Top Award for Evolution -AAAS

gluadys

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FSHWILDFIRE said:
Theistic evolution is a very difficult position to defend, however this does not make it false in any way.

Yes, TE is always in the cross-fire of creationism and militant atheism. Both extremes see us as the enemy.


However, the very essence of evolution is naturalistic/materilaistic and this position has certain outcomes.

Let us start off with some basic metaphysics. "natural" is not equivalent to "godless". Any deity which can work miracles can also work within the flow of natural events. Christian belief does not see God as merely creating the universe but also as sustaining it. This sustaining work ordinarily takes place without the bells and whistles of supernatural miracles.

So TE sees evolution as God working within the flow of natural events. Other natural forces like gravity and electromagnetism would also be seen metaphysically in the same perspective.


If one holds genesis as true and evolution as true as my botany professor said, there is a "clear contradiction".

Your botany professor has left out a key qualification. The assessment should be "If one holds genesis as literally true...." If one sees Genesis as referring to six/seven literal days in the history of the universe, as the events of each day being actual historical events, etc. there is certainly a "clear contradiction" with science (and not just with evolution).

But adopting a literal interpretation of Genesis is not a requirement of Christian doctrine.

Genesis imposes purpose upon the universe...humans, mankind etc.. Evolution has no purpose!

Evolution is an automatic process. How can an automatic process have a purpose? This does not mean that God cannot have a purpose to be achieved through evolution.

No purpose! In my population genetics course they had told us to be a good population geneticist which is quite important in evo bio, it is vital to understand that life has no purpose. Evolution is an inevtiable outcome of organisms interacting with their environment and that is it. Evolution is at heart an ecological idea, and ecology is unpredictable.

Purpose requires intention. Most life-forms are incapable of intention. And the process of evolution is incapable of intention. So your professors are quite right when it comes to the pragmatic work of studying evolution.

However, this does not mean one has to carry over the practical necessity of scientific study to a metaphysical conclusion. Life-forms may not have a purpose, but God may have a purpose for life. So the lack of purpose in living things does not mean that purpose does not exist--only that the purpose is not contained in living cells, but rather in the mind of the Creator.


And when Richard Dawkins spoke on the issue of religion in Buffalo awhile ago I think he made it clear that Theistic evolution is nonsense, and does injustice to both the theistic and the atheistic wordview.

You don't expect Richard Dawkins to say anything favorable about any kind of theism do you? Without knowing his exact remarks in context, I cannot analyse his logic. But he is probably assuming that a theistic worldview must conform to a creationist worldview. That is a common error atheists make when they try to show the weaknesses of theistic evolution.


The majority of evolutionary biologists will ignore theistic evolution because it implies a misunderstanding of the nature of evolution.

One needs to understand that theistic evolution is a metaphysical position, not a scientific position. It is irrelevant to the pragmatic work of scientists, and as such it is properly ignored in that context.

Just a few thoughts, I don't want to start any "beef" as they say. I'm just taking part in the conversation of life and I would love to hear your thoughts.:)

And thanks for your thoughts. I hope you are taking away a few new ones to nibble on.
 
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FSHWILDFIRE

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Thanks for your comments.
I agree with much of what has been said. For many of the points you bring up can be used in the intelligent design argument as well. As well one does not have to be a YEC to interpret the Bible literally. There is progresive creation or OEC.

However if we do not interpret genesis as a literal, is this not arbitrary? What else in the bible can we interpret as not literal? This leaves the whole bible open for different kinds of interpretations. What happens to Pauline theology? Also there are many biblical problems with theistic evolution. For example if we look at genesis 1:1 and mark 10:6 which says
"But from the beginning of the creation God made them male and female"(King James)
This is very strong biblical support.

As well in many instances Jesus speaks about the fall of man and about Adam as if it is literal. When did the fall of man occur and how?

Nowhere in the bible does it say Genesis should be interpreted in any other way then factual report. If it implied such an idea, I'd consider it.

In TE does God not become a God of the gaps?

What about the future? Will evolution persist in the future?

Should not the scientifc study make sense with metaphysics in where they overlap?

The truth of the matter is evolutionary biologists will not allow any sort of divine guidance for the evolutionary process. Why? Because it doesn't require such a thing. He is not required in the process therefore why assume He is working within the flow of natural events? At it's core the philosophy behind Genesis is incompatible with the philosophy of evolution.
At the scientifc level it is not purposeful, but then a theological claim is made that at the metaphysical level it does. To me that seems that to confuse things, and creates this faith-science seperation,in which they both make different claims but it's okay. Science maybe metaphysically neutral on many things, however is evolution is not one of them. There are clear metaphysical implications.

I don't expect you to answer all these questions, questions are sometimes not easy or meant to be answered.


Theistic evolution has great appeal, I think mainly because you are getting the best of both worlds. However in the end, we realize that the issues of YEC OEC, evolution and what point of view we make is not where our salvation lies. But in Jesus Christ, and his death which turned in to life.
"Because I live, you shall live also" :clap:

p.s. if there are grammatical errors..it is very late and I am Tired and my focus can get oozy. :p Sorry!
 
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rjw

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SamCJ said:
Only the part that causes it to be abhorrent to Christians.





I have been dealing with biases for 40 years. No one ever admits the influence of their bias. That does not mean it does not exist.



Glaudys says you are right in your definition of a theistic evolutionists. Since she is a very intelligent one, I will explain my problems with it in response to her post which follows yours.



I conceded long ago that I had nothing to back up my suspicions except my knowledge of the ways of the world. I will now add, that I have not reread the article to find something there on my side of this point, assuming you would not be asking the question if the article had a definite answer which you can find as easily as I. However, I do a daily Google search for "scientific breakthrough" and there have been probably 50 hits to different newspapers. Every paper puts "Evolution" in the headline. If I have misconstrued the AAAS intent, it appears that every paper in the US has as well. (This might be exaggerated some, but that is my general impression without an exhaustive review of the details.)


]

I did not mean for you to go to so much trouble. I think your comment that prompted my question was that everything is governed by the laws of nature. I thought my question was mostly rhetorical, pointing out that random mutations of evolution are an exception. With your detailed answer, I do not know whether you agree with most atheistic evolutionists I have argued with that the 1 in 100 million replications that is a mutation is random, or do you disagree believing them to be governed by laws of nature.

Hi SamCJ,

SamCJ said:
Only the part that causes it to be abhorrent to Christians

I guess you mean the random part. But be careful SamCJ. I know of some very conservative Christians who are quite happy with the random part. So not all Christians find it abhorrent.

Randomness is peculiar in a way. Ever heard of statistical mechanics? Random processes can do work. Random processes have well defined distributions. Randomness does not mean lawlessness. “Lawlessness” is something peculiar to humans. Random just means that we cannot predict. Can you predict everything in nature? Does it make you feel abhorrent that you cannot?


SamCJ said:
I have been dealing with biases for 40 years. No one ever admits the influence of their bias. That does not mean it does not exist.

Hey – we atheists and evolutionists and lovers of randomness are not the only ones who have that problem.

SamCJ said:
Glaudys says you are right in your definition of a theistic evolutionists. Since she is a very intelligent one, I will explain my problems with it in response to her post which follows yours.

Fair enough.

SamCJ said:
I conceded long ago that I had nothing to back up my suspicions except my knowledge of the ways of the world. I will now add, that I have not reread the article to find something there on my side of this point, assuming you would not be asking the question if the article had a definite answer which you can find as easily as I. However, I do a daily Google search for "scientific breakthrough" and there have been probably 50 hits to different newspapers. Every paper puts "Evolution" in the headline. If I have misconstrued the AAAS intent, it appears that every paper in the US has as well. (This might be exaggerated some, but that is my general impression without an exhaustive review of the details.)

I understood that the claim was made and the AAAS denied it. I could find nothing in the article to suggest otherwise.

However, I guess this is now a dead issue – unless something else pops up.

SamCJ said:
I did not mean for you to go to so much trouble.

No trouble. It gives you a bit of insight.

SamCJ said:
I think your comment that prompted my question was that everything is governed by the laws of nature. I thought my question was mostly rhetorical, pointing out that random mutations of evolution are an exception. With your detailed answer, I do not know whether you agree with most atheistic evolutionists I have argued with that the 1 in 100 million replications that is a mutation is random, or do you disagree believing them to be governed by laws of nature.

These things are statistical. Lots of processes in nature can only be handled in such a way. The 1 in 100 million is, to the best of our knowledge, random. There is good evidence that, under some circumstances, a cell can increase its own mutation rate as it tries to find a solution to a problem e.g. some cells in the immune system when a foreign body attacks. These mutations are “designed” to increase by the immune system, but are random nevertheless. I forget the exact mechanics. The 1 in 100 million is a kind of background mutation rate – mentioned in my summary to you. It is random in that it cannot be predicted when the mutation will occur. It may not be quite so random as to where though. Like I said, some parts of the genome are more inclined to mutate than other parts.


But SamCJ, processes governed by laws of nature and random processes! We do actually observe both operating in the universe. If God created the laws, why did he not also create the random? After all both are observed. (That is me putting on a theologian’s hat for a bit.)


Regards, Roland
 
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gluadys

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FSHWILDFIRE said:
Thanks for your comments.
I agree with much of what has been said. For many of the points you bring up can be used in the intelligent design argument as well. As well one does not have to be a YEC to interpret the Bible literally. There is progresive creation or OEC.

Well, I would not consider them to be literal interpretations. Just non-scientific.

However if we do not interpret genesis as a literal, is this not arbitrary? What else in the bible can we interpret as not literal?

Oh, pretty well everything. If you ever read medieval theology you will find that they turned their noses up at literal interpretations. Even when they believed a text was literal fact, they considered that a trivial observation. They believed the real message of scripture was in the "more spiritual" non-literal interpretations, and worked hard at finding a multiplicity of non-literal interpretations for every passage of scripture.

This way of interpreting scripture fell out of fashion with the advent of modern science. As the claim was pressed that science, and only science, uncovered real truth---as more and more it was claimed that only fact is truth--Christian theologians began trying to establish that scripture was factually true, just as science is.

Of course, some parts of the bible are factually true. But the bible was not written by people who held that only facts are true, but by people who took metaphors and other figures as being just as true as facts.

So we need to work somewhere between the extremes. The bible is not wholly literal, nor is it wholly non-literal. And often we cannot be sure which is which, so we will continue to debate that.

This leaves the whole bible open for different kinds of interpretations. What happens to Pauline theology?

And what is wrong with that? Pauline theology has always been open to different kinds of interpretations--long before science entered the picture. That is a natural consequence of the complexity of Paul's thinking.

Also there are many biblical problems with theistic evolution. For example if we look at genesis 1:1 and mark 10:6 which says
"But from the beginning of the creation God made them male and female"(King James)
This is very strong biblical support.

I have seen this verse cited many times now and still cannot figure out why people think it is problematical. Of course humanity has been male and female from the beginning. Nothing in evolution contradicts that.

As well in many instances Jesus speaks about the fall of man and about Adam as if it is literal. When did the fall of man occur and how?

It happens all the time. Whenever, wherever people step outside the will of God and find themselves separated from God.

Nowhere in the bible does it say Genesis should be interpreted in any other way then factual report. If it implied such an idea, I'd consider it.

And nowhere does it say that it should be interpreted as factual report either.

In TE does God not become a God of the gaps?

No, just the opposite.

What about the future? Will evolution persist in the future?

Yes, as long as there is a future.

Should not the scientifc study make sense with metaphysics in where they overlap?

I don't know that they do overlap, but assuming they do, the question can also be posed the other way around. Should not metaphysics make sense with scientific conclusions where they overlap?

The truth of the matter is evolutionary biologists will not allow any sort of divine guidance for the evolutionary process.

Some won't because they don't believe in any deity and therefore reject the very concept of divine guidance. But for others, this is a pragmatic of scientific study, not a scientific conclusion.

Why? Because it doesn't require such a thing. He is not required in the process therefore why assume He is working within the flow of natural events?

Because, from the standpoint of belief, we know by faith that God does exist and therefore does interact with his creation, whether we can identify where and how he acts or not.

At it's core the philosophy behind Genesis is incompatible with the philosophy of evolution.

I do not grant that there is a philosophy of evolution. Evolution is a fact, and since philosophers try to keep their philosophy consistent with what is known to be factually true, philosophers of all stripes will try to align their philosophy with evolution.

This is just as true of Christian philosophies (theologies) as non-Christian philosophies.

To accept one philosophy as the philosophy of evolution is to forget that other philosophies also make their accommodations to evolution. Theistic evolution is as much a philosophy of evolution as materialism is.

Science maybe metaphysically neutral on many things, however is evolution is not one of them. There are clear metaphysical implications.

Sure, but atheism is not one of them.


Theistic evolution has great appeal, I think mainly because you are getting the best of both worlds. However in the end, we realize that the issues of YEC OEC, evolution and what point of view we make is not where our salvation lies. But in Jesus Christ, and his death which turned in to life.
"Because I live, you shall live also" :clap:

:amen:

And a Happy New Year.
 
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FSHWILDFIRE

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I could sit here and debate this for very long and we will get no where. The very reason is..that the post-modern mood has touched Christianity and many have accepted as such. And as Ravi Zacharias put it Debating with post-modernist is debating with a thousand different Philosophies and ideas and this not only confuses the objectivist but the post-modernist also. Medieval theology also had literal interpretations as well even when it came to Genesis. Which is where our debate is centred. If we cannot know what is literal and what is not we have denied truth its job. Truth by definition is exclusive. Leaving the Bible open to interpretations is very dangeorus and if you read 2Peter 3:16, Peter makes note of that. The word methodology in theology clearly implies that there are improper directions that can be taken when interpreting the Bible, for by the greek definition it means "a way or a path of transit". Objective methodology is what we must seek. Subjective methodology leaves us with a Bible that is read as mythology and without understanding. God created lanaguge for a purpose. He uses this for revelational communication. The Bible exists because humans need to know spirtual truths that they cannot obtain. Instead of superimposing a meaning on the Biblical text we must seek Author's intended meaning. And usually an Author wants to make his/her statement clear. Saying that we can pretty much interpret everything as not literal steals the author of his job in many cases. The author gives meaning and the reader discovers it. How must we expect people to come to Christ if we cannot agree on interpretation. It seems Christians are the confused. Evolutionists see the clear contradiction between genesis and science, because they know that genesis is what it is, and TE is just an anasthetic.
On a side note I just thought this would be interesting as a personal experience. As you probably know I am an evolutionary biology major with concentration in paleobiology. I am in my last year. Last summer my life had changed in the lab with one of my professors in which we were studying molecular evolution, analysis of molecular data, gene structure, neutrality, sequence evolution, and phyologeny construction. My job was to do analysis of phylogeny on Guppies. It is incredible the information used in macroevolution. I was shocked to see what I saw. If there is one thing that is true, it is that the tree of ancestry is all over the place. It makes absolutley no sense! Molecular, biochemical, and morphological data I had compared with the information in scientific literature for finding indicators of relationships. It is as if there are over 20 paths of evolution- that are in contradiction. The character coding is just wild. However I was not skeptical of evolution yet in any way. This is science and science continues and progresses. However as I continued in my research I came upon the Cambrain explosion. As one who is concentrating in Paleobiology, this hit me hard. It is very interesting the different techniques, sometimes employed to understand the Cambrian explosion. Now I am in no way denying evolution, and I will continue doing research in this field. I would like to go on to Graduate school and do work on the Cambrian explosion in relation to evolutionary developmental biology. However, if there is one thing people should know it is that evolution is a fact to a certain degree. Knowing that gene frequency is important when it comes to evolution- scientists define evolution as changes in gene/allele frequency over time. This is true in many cases, but I hope to find out just how much change can occur, specifically in the Hox genes . However the point is that evolution is a fact in the sense that we are getting somehwere with it, but it is still widely not understood and this is due to lack of evidence, namely at molecular level. Just read the scientific literature. The books can be good, but Journals are even better! Anyways my friend I must be going. I actually have to write a paper regarding the evolution of the eye. :cry:And Happy new year to you to! May He fill your New Year with many blessings, and may His Holy spirit always be with you.
 
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gluadys

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FSHWILDFIRE said:
I could sit here and debate this for very long and we will get no where. The very reason is..that the post-modern mood has touched Christianity and many have accepted as such. And as Ravi Zacharias put it Debating with post-modernist is debating with a thousand different Philosophies and ideas and this not only confuses the objectivist but the post-modernist also.

My daughter has introduced me to post-modernist philosophy. I find it a refreshing change from postivism, which I have never liked. But we both agree that its strength is in deconstructing the assumptions of older philosophical movements. It does not lend itself to building a new synthesis.


Medieval theology also had literal interpretations as well even when it came to Genesis.

I didn't say otherwise. I said they considered literal interpretations trivial and shallow and valued non-literal interpretations more.


Which is where our debate is centred. If we cannot know what is literal and what is not we have denied truth its job. Truth by definition is exclusive.

It is not that we cannot know. But that it takes work to learn which is which. Also, literal and non-literal interpretations are not mutually exclusive either. The medieval scholastics were right in noting that many scriptural texts have both literal and non-literal meanings. They were even right in noting that often the non-literal meaning is where the real message of scripture is.

Where they went wrong is in under-valuing the literal meaning. Where modern creationists go wrong is in over-valuing the literal meaning. To assume that either the literal or non-literal meaning is the basic default meaning to be preferred before the other is the interpretive error. God speaks to us in many ways.

Leaving the Bible open to interpretations is very dangeorus and if you read 2Peter 3:16, Peter makes note of that.

All texts are interpreted texts. No one reads any text without interpreting it in light of their own knowledge and beliefs. And Peter is not talking about interpretation of scripture by readers. He is talking about interpretaion of prophecy by prophets. What he is saying is that prophets do not make up their messages privately, but are led to prophecy by the Holy Spirit.

The word methodology in theology clearly implies that there are improper directions that can be taken when interpreting the Bible, for by the greek definition it means "a way or a path of transit". Objective methodology is what we must seek. Subjective methodology leaves us with a Bible that is read as mythology and without understanding.

Yes, and good methodology can help us avoid improper directions. But don't confuse method with outcome. Objective methodology can lead to the objective conclusion that a scriptural story is a myth. However, if one takes the time to learn, one can read mythology objectively and with understanding, just as any other text.

God created lanaguge for a purpose. He uses this for revelational communication. The Bible exists because humans need to know spirtual truths that they cannot obtain.

And using mythology is a good way to communicate to people steeped in mythological concepts. Myth is an excellent vehicle for spiritual truths because it is not tied to the limited objective knowledge of particular generations. Tying spiritual truths to scientific concepts could mean that the spiritual truths will be swiftly lost as scientific concepts become outdated.



Instead of superimposing a meaning on the Biblical text we must seek Author's intended meaning. And usually an Author wants to make his/her statement clear. Saying that we can pretty much interpret everything as not literal steals the author of his job in many cases. The author gives meaning and the reader discovers it.

Absolutely, we must seek the intended meaning, not super-impose our own. But you are making the assumption that every author of the bible intended his (or her?) writing to be literal. With so much poetry, symbolism, oracular prophecy, etc. in the bible, it seems clear that many authors did not choose to write in literal terms. Indeed mystics tell us that no literal language can convey truth about God. So perhaps they had to couch what God revealed in non-literal language because literal language was not capable of saying what needed to be said.

You are also assuming that non-literal language is not clear. That is also a false assumption. Non-literal language can be just as clear as literal fact. And when an author deliberately chooses non-literal language, it is certainly not robbing him of his job to study it as such. Yes, the author gives the meaning, and the task of the interpreter is to discover it.


How must we expect people to come to Christ if we cannot agree on interpretation.

If an agreed interpretation was necessary to bring people to Christ, even the apostles would not have made converts. Christians have been divided on interpretations even before the scriptures were written. For three to four centuries they were even divided on what was scripture and what was not. (Still are when it comes to the OT.) You will not find any time in Christian history when there was not debate--and sometimes war--over interpretations of scripture and doctrine.

Yet in every generation, people have also come to Christ. Though perhaps many more would have without the divisions.

It seems Christians are the confused. Evolutionists see the clear contradiction between genesis and science, because they know that genesis is what it is, and TE is just an anasthetic.

Please don't confuse evolutionists with atheists. Atheists are often as literal-minded about Genesis as fundamentalists are. Do you know I have had atheists tell me I am not Christian because I do not accept their naive intepretations of scripture? Now I expect that from a certain type of Christian who adheres to a rigidly-literal interpretation of scripture. But I found it very ironic that people who reject Christianity would have the same opinion.

Sometimes, evangelists are able to win people over by asking them what they believe about God. And then explain, "The god you describe is not the God I believe in either." Because people do often hold some strange ideas about God and if they reject God on the basis of false ideas about God, then the appropriate thing to do is to show them that it is their ideas which are false, not God.

The same applies here. The Christianity those atheists reject is not the Christianity I accept. In fact, I consider it a distortion of Christianity, not at all true to the teachings of Jesus. So it doesn't phase me that they see a clear contradiction between science and genesis. All that tells me is that they don't understand genesis.

On a side note I just thought this would be interesting as a personal experience. As you probably know I am an evolutionary biology major with concentration in paleobiology. ... It is as if there are over 20 paths of evolution- that are in contradiction. The character coding is just wild.

Strange, you are the science student while I have no formal background in science at all. Yet you are surprised by this while I am not. Maybe its just because you are young and I am not.

Much of the scientific work in evolutionary biology for years to come will be investigating and confirming which of those 20 + paths is the correct one.

Another thing to keep in mind, is that the most confusion will be in the narrowest ranges of difference i.e. within species and genera. No matter how the various species of guppies are eventually arranged, they will still all be in the same order and probably the same family as their current classification.

However I was not skeptical of evolution yet in any way. This is science and science continues and progresses. However as I continued in my research I came upon the Cambrain explosion. As one who is concentrating in Paleobiology, this hit me hard. It is very interesting the different techniques, sometimes employed to understand the Cambrian explosion. Now I am in no way denying evolution, and I will continue doing research in this field. I would like to go on to Graduate school and do work on the Cambrian explosion in relation to evolutionary developmental biology. However, if there is one thing people should know it is that evolution is a fact to a certain degree.

Evolution is fact, full stop. It is the history of evolution where all the controversy lies in science. We know that species evolve and have evolved. But working out the details of each lineage has just begun. And I envy you. Paleobiology is on the cutting edge of this investigation. So is evolutionary development. All the best in your future studies.
 
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FSHWILDFIRE

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I would like to respond to all of your comments and thanks for taking the time to respond..but this paper must be done!:scratch::cry:
I just wanted to point out the reason I am suprised by the my experience is because this is not what the text books make it seem and the books written for lay people. It is very misleading the way the they put all of it. The scientific community puts on a lot of make up sometimes. They make it very clear cut and clean. I am only saying this is not the case. For when the journals come in and you begin reading scientific literature you realize that species have evolved but has anything higher? These trees of ancestry pose a problem. Again I am not saying the modern synthesis of evolution is false I'm just being the skepic that I am. And many evolutionists will admit to this problem/question with no definite answer. But again I feel that evo devo bio and paleobiology may provide the answer if there is one.
 
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gluadys

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FSHWILDFIRE said:
Agreed. However can you show me that anything higher then species has evolved using evidence? When I mean higher.. I am implying macroevolution.

All macro-evolution takes place at the level of species. There is no form of evolution that invents a new genus or any higher level in a single step. Higher levels of taxonomic order emerge as new species emerge. They cannot emerge in any other way. Higher taxonomic orders are only ways of tracing the history of innumberable changes in species.
 
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FSHWILDFIRE

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Now you have stepped in a debated area of whether macroevolution is cumalitive microevolution or if they are different in their mechanisms and processes.

There has not been much evidence for the former and well PE theory proposed by N.E and Gould is supposed to help but again it really doesn't . Hence the problem,
 
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caravelair

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FSHWILDFIRE said:
Agreed. However can you show me that anything higher then species has evolved using evidence? When I mean higher.. I am implying macroevolution.

it can be demonstrated that humans and chimps, for example, share common ancestry. wouldn't that imply macroevolution?
 
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caravelair

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HairlessSimian

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FSHWILDFIRE said:
Now you have stepped in a debated area of whether macroevolution is cumalitive microevolution or if they are different in their mechanisms and processes.

There has not been much evidence for the former and well PE theory proposed by N.E and Gould is supposed to help but again it really doesn't . Hence the problem,

Why would a small change be different from a large change (in genetic diversity)?
Here's an analogy:
If you've ever played with a Rubik's Cube, you'd remember that a new cube (all in order), after twisting once or twice, will generate a small change where the basic pattern of the original is still easily recognized. Twist a few more times and you'll soon find none of the original pattern remains.
Genetic variation within a population is like a bunch of cubes with one or two groups rotated here and there. Speciation is like a whole different pattern, where the cumulated effects of several twists have caused such profound changes as to completely distinguish the result from the starting point.

I think Punctuated Equilibrium addresses the ecological phenomenon of species replacement, and nicely explains the relatively rapid changes seen in the fossil record between long periods of statis, not speciation itself.

The problem is one of population genetics. Because you can't readily sample the genetic profiles of entire populations and because changes occur slowly, the field relies heavily on simulation. Sewell Wright wrote a seminal article decades and decades ago, about a fitness landscape and how populations go from one valley to the next. I thought it was a nice representation of how speciation can work. Work in the field continues, but I have not kept up.

 
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gluadys

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FSHWILDFIRE said:
Now you have stepped in a debated area of whether macroevolution is cumalitive microevolution or if they are different in their mechanisms and processes.

There has not been much evidence for the former and well PE theory proposed by N.E and Gould is supposed to help but again it really doesn't . Hence the problem,

PE also calls for accumulated microevolution. The point of PE is that species change can happen more rapidly in small isolated populations. If that population then replaces another by migration, the change will appear in the fossil record as a sudden leap.

At the same time it is more difficult to find the small isolated region where the population evolved rapidly. Though if one does, one can expect to find most of the transitional forms. Niles Eldredge did work on PE in which he found this pattern in trilobites. I don't know the journal reference, but using his name as a key word should turn up something. It would have been published in the late 70s or early 80s.
 
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rjw

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