smloeffelholz
New Blood
- Joined
- Mar 19, 2008
- Messages
- 20
When you called evolutionists predictable, that was the pot calling the kettle black. The instant I posted about the Cit+ bacteria I knew exactly how you were going to refute it. The same way that every creationist, and coincidentally the same way that every major creationist website, tries to refute it. Simply claim that the mutation was a very minor change and point out that the bacteria is still bacteria. Despite the fact that the first statement is false and the second statement is not only obvious but expected by the researchers themselves, it sounds good and can make the uneducated nod their heads.
First, I have to point out (even though others already did) that the E-coli bacteria used in the experiment could not metabolize citrate under aerobic conditions at the beginning of the experiment. This point cannot be emphasized enough because that shows that the Cit+ bacteria developed a unique, beneficial mutation. It doesn't matter that other strains of bacteria already had that ability, this particular strain didn't. Using this logic, if a child who has never spoken before speaks, it is no big deal because other children can do it (not the greatest example because it does not involve generations and evolution but I hope you understand my point).
The second statement from above is just moving the goal posts. Creationists love to do this and have been for as long as evolution has been around. First they wanted proof that random mutation and natural selection could produce beneficial changes in an organism. Once this was displayed many times, they wanted evidence that these traits could accumulate and cause speciation events. Then several examples of this were found. Now creationists have resorted to asking to see the impossible. Even though evolution has only been studied for about 150 years, they want to see changes that should take hundreds of thousand to millions of years. This is akin to not believing in erosion because no scientist has been able to reproduce the Grand Canyon in 20 years. The real kicker here is that the only way this evidence could be obtained in our lifetime, is by experimentally speeding up mutations and selection using non-natural means. Then even if a scientist succeeds at this monumental feat, creationists will claim that intelligence was involved and evolution was not the driving force. Each time a scientist completes a challenge set forth by creationists, they try to explain away the research and put forth a new, much more difficult, challenge.
Interestingly enough, after you gave your predictable reply to the Cit+ study, I was going to mention the nylon bacteria, but someone beat me to it. You have not addressed this topic, and it is much harder to explain away than the Cit+ bacteria. These organisms are able to digest molecules that did not exist 100 years ago. Either the bacteria always had the ability to digest a substance that never existed (something that makes no sense at all), or they developed this novel trait through random mutations such as gene duplications. If you concede that the latter is true, this obliterates the claim that useful additions to the genome cannot come about through random mutation, and that the probabilities involved in developing novel proteins is prohibitively high.
Finally, I would like to address the point you keep making about beneficial mutations making something less fit in a different environment. If you think about it, this makes perfect sense. An animal cannot be perfectly adapted to every conceivable environment, and any trait that is beneficial in one environment will be detrimental in another. Evolutionary processes do not have foresight and cannot possibly plan for the future. Pandas are an excellent example of this. They are animals that are perfectly suited to occupy a very specific niche in the environment (the ability to digest a rapidly growing and bountiful plant is obviously beneficial). Now that their niche is all but gone, they are all but extinct. This doesn't mean that they were poorly evolved, it just means that the environment they had evolved to live in is now basically destroyed. I doubt that anyone would claim that arctic wolves or scorpions are poorly adapted to their environments, yet place a scorpion in the arctic and an arctic wolf in the desert and see how well they do. Becoming more highly adapted, and therefore more evolved, to an environment requires that you are more poorly adapted for other environments.
First, I have to point out (even though others already did) that the E-coli bacteria used in the experiment could not metabolize citrate under aerobic conditions at the beginning of the experiment. This point cannot be emphasized enough because that shows that the Cit+ bacteria developed a unique, beneficial mutation. It doesn't matter that other strains of bacteria already had that ability, this particular strain didn't. Using this logic, if a child who has never spoken before speaks, it is no big deal because other children can do it (not the greatest example because it does not involve generations and evolution but I hope you understand my point).
The second statement from above is just moving the goal posts. Creationists love to do this and have been for as long as evolution has been around. First they wanted proof that random mutation and natural selection could produce beneficial changes in an organism. Once this was displayed many times, they wanted evidence that these traits could accumulate and cause speciation events. Then several examples of this were found. Now creationists have resorted to asking to see the impossible. Even though evolution has only been studied for about 150 years, they want to see changes that should take hundreds of thousand to millions of years. This is akin to not believing in erosion because no scientist has been able to reproduce the Grand Canyon in 20 years. The real kicker here is that the only way this evidence could be obtained in our lifetime, is by experimentally speeding up mutations and selection using non-natural means. Then even if a scientist succeeds at this monumental feat, creationists will claim that intelligence was involved and evolution was not the driving force. Each time a scientist completes a challenge set forth by creationists, they try to explain away the research and put forth a new, much more difficult, challenge.
Interestingly enough, after you gave your predictable reply to the Cit+ study, I was going to mention the nylon bacteria, but someone beat me to it. You have not addressed this topic, and it is much harder to explain away than the Cit+ bacteria. These organisms are able to digest molecules that did not exist 100 years ago. Either the bacteria always had the ability to digest a substance that never existed (something that makes no sense at all), or they developed this novel trait through random mutations such as gene duplications. If you concede that the latter is true, this obliterates the claim that useful additions to the genome cannot come about through random mutation, and that the probabilities involved in developing novel proteins is prohibitively high.
Finally, I would like to address the point you keep making about beneficial mutations making something less fit in a different environment. If you think about it, this makes perfect sense. An animal cannot be perfectly adapted to every conceivable environment, and any trait that is beneficial in one environment will be detrimental in another. Evolutionary processes do not have foresight and cannot possibly plan for the future. Pandas are an excellent example of this. They are animals that are perfectly suited to occupy a very specific niche in the environment (the ability to digest a rapidly growing and bountiful plant is obviously beneficial). Now that their niche is all but gone, they are all but extinct. This doesn't mean that they were poorly evolved, it just means that the environment they had evolved to live in is now basically destroyed. I doubt that anyone would claim that arctic wolves or scorpions are poorly adapted to their environments, yet place a scorpion in the arctic and an arctic wolf in the desert and see how well they do. Becoming more highly adapted, and therefore more evolved, to an environment requires that you are more poorly adapted for other environments.