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Author | Topic: What is an ID proponent's basis of comparison? (edited) | |||||||||||||||||||||||
Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
Specified complexity (CSI) is defined as more that 400 bits (the newest estimate) of information. Every person who has ever written a letter has created CSI, and therefore made it clear that intelligence can indeed create CSI. No natural process has yet been seen to do this. So, leaving out living things for a moment, how many bits is an igneous rock (let's say, the size of a baseball), or a star (let's say, the sun)? Are these things designed or not? I mean, they're pretty complex, depending on how you look at them. Also, where does this 400 bits estimate come from?
The scientists ahve, by using their intelligence, actually created a bacterial genome from scratch. They produced information from scratch. This is evidence that intelligence can actualy produce CSI. No one ever denied that. We know humans can make things. Pretty darn complicated things. But just because we can replicate something we find in nature doesn't mean that thing in nature was intelligently designed. Houses are not proof that an "intelligent being" made caves.
He basicly explains how for any kind of algorith, including evolutionary algorithms, you need to input information first to get any information out. An algorith by itself is useless unless it uses an intelligent input. Algorithms obviously need input by definition, obviously. But why "intelligent input"? How can an algorithm recognize the difference between input from an intelligent source and input from an unintelligent (a-intelligent?) source? We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
We are looking for those that give us ne biologic functions. I know that evolution is not directed. That is why it can't produce new biological functions, i.e. CSI Evolution (actually random mutations) produces new biological functions all the time:Bacterial resistance to antibiotics or bacteriophage The ability for some human adults to digest lactose Just to name a couple extensively documented ones. It is incorrect to state that evolution is not directed. Evolution IS directed, by natural selection. The same way the flow of a river is directed by gravity and the surrounding landscape. However, there is no end goal of complexity (which is why >99% of life on the planet is microorganismal). We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
quote:Nope. Evolution has never been known to produce new information. quote:This is loss of information. quote:Look at table 1. You will see, that all accounts of the supposed gain in information from the resistance to antibiotics is actually a loss of information. The mutations made the proteins brake down, or loose the afinity to bond witht he antibiotic. And that's how we get the resistance. Not by making new structures and biological functions, but by braking them. That table so conveniently leaves out resistance gained by the PRODUCTION of beta-lactamases, which cleave the beta-lactam ring of penicillin-like antibiotics. Or how about restriction enzymes which enzymes that have evolved to cut the DNA of invading viruses? I maybe didn't use the best examples before, but they were just off the top of my head. Here, have some more. * The ability of a bacterium to digest nylon (Negoro et al. 1994; Thomas n.d.; Thwaites 1985)* Adaptation in yeast to a low-phosphate environment (Francis and Hansche 1972; 1973; Hansche 1975); * The ability of E. coli to hydrolyze galactosylarabinose (Hall 1981; Hall and Zuzel 1980); * Evolution of multicellularity in a unicellular green alga (Boraas 1983; Boraas et al. 1998); * modification of E. coli's fucose pathway to metabolize propanediol (Lin and Wu 1984); * evolution in Klebsiella bacteria of a new metabolic pathway for metabolizing 5-carbon sugars (Hartley 1984) Even just one of these is sufficient to render yours statement "Evolution have never been known to produce new information" false. And stop saying evolution in this case. Mutations produce new information. Are you seriously trying to say that there is no such thing as a mutation that could produce a new protein with a new function? We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
Show me evidence.
I did, the nylon-eating bacterium the result of a frame-shift mutation that created a new enzyme which was not able to digest its previous food source, but only nylon.
quote: New Proteins Without God's Help | National Center for Science Education Here's another example: Big-Benefit Mutations in a Bacteriophage Inhibited with Heat | Molecular Biology and Evolution | Oxford Academic Adaptation of phage phiX174 to higher temperature results in 3 large-benefit mutations. The mutations occur in the structural proteins of the protein capsid which stabilize the the protein at the higher temperature, thus allowing them to function better at the higher temperature. There is no degradation of the proteins, there is no on-off switching. It's new proteins with a different amino acid sequence that optimizes the functioning of the phage a different temperature. Obviously, a mutation is not going to turn an enzyme into a carbohydrate, and a single mutation will not create an arm where there was none, but to say no mutation has ever produce any new information is patently false. We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
Not only that but this can be achived in 9 days in the lab. It doesn't take lots of time you see. You just place the bacteria in the presence of nylon, and they will get the ability to digest nylon every time. That's because of the mechanisms they have. Not because of chance. Just because something happens predictably, doesn't mean it's not by chance. If I roll a 6 sided die, I will come up with a 2 at least once within an hour. EACH TIME! Holy moley! there must be something else besides chance happening here! Or, maybe it's that the probability of developing the mutation is such that within 9 days, and in the presence of nylon, the bacterium will develop the mutation that allows it to digest nylon.
Second, the real reason, which is verified that does cause those kind of changes, are actual, already existing systems. The so called transposons. They are induced by outside influences to start mutating specific genes. Yes, some bacteria have an adaptation that causes them to increase mutation rates when they are under stress. Sometimes they increase the overall mutation rate of the whole genome, sometimes they increase the mutation rate at a specific place. However, that does not mean that there is any particular mutation they are going for. Nylon is not a naturally occurring polymer. There's no possible way the bacterium could "know" what kind of mutation it could need. Instead, it increases it's mutation rate when under stress which gives it a better chance of creating a beneficial mutation. There is no predetermination. There is no guarantee that the right mutation will occur. But, lucky for the bacteria, there are billions upon billions of them, and even if the right mutation only has a 1 in 10000000000 chance of happening, chances are, in 9 days, through hundreds of generations, it will. It's still a novel mutation that confers a new function, not a physiological response We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
Bacteria are a bit more complicated than dice, don't you agree? No kidding. But the same principle still applies. Just because it's by chance does not mean it's not predictable.
Yet they didn't, they only do it in the lab, and in only 9 days. There are a lot of things bacteria do only in the lab, and many things they do in predictable amounts of time. But it's always random mutation.
Bacteria are a bit more complicated than dice, don't you agree? If it was that easy to evolve nylon degradation ability by chance, than they would have done it before. Yet they didn't, they only do it in the lab, and in only 9 days. No, they wouldn't have done it before, because nylon is not a naturally occurring polymer.
But the point is that when in the presence of nylon, transposons will start to mutate a specific region of the genome untill bactria can degrade it. That's why they can't do it instantly, but have to wait for about 9 days. Yet the point is that this happens not by random undirected mutations. You obviously did not understand what I said. Just because transposons start mutating a specific region, does not mean that they're specifically directing it to mutate to digest nylon. When stressed by a lack of their usual food source, the bacteria increase their mutation rate a specific site in the genome (one that has to do with digestive enzymes), just in case a beneficial mutation pops up. It just so happens, that a single frameshift mutation is all that is required for the bacteria to digest nylon. Another novel food source may require multiple mutations and may take longer to adapt to, if they can at all. We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
The facts contradict you. Transposons induce mutations. They are not random. OK. This is obviously a really difficult concept for you. If you induce mutations, what that means is you increase the chance that a mistake is made in copying the code. However, the kind of mistake that is made is still random. The outcome of this mistake is random. This is still random mutation, there's just a higher probability that it will occur when it is induced. Inducing mutation is just like rolling multiple dice instead of just one (or rolling one die more often). It increases the chances of getting the desired roll, but it does not decrease the randomness of each individual roll. Just because there are mechanisms that allow for this increased mutation rate doesn't mean it's not random.
There are alos cases of mechanisms which induce mutations, and if they are blocked, a bacteria can't get resistance, no matter how long it takes. Ah, they can't get resistance within the scope of the experiments, not no matter how long it takes. A key distinction. Yes, bacteria have ways of increasing the rate of mutation. But, you keep saying it's not random, and yet you also say it's not directed to a specific goal. So which is it? Be consistent. Either bacteria have the ability to direct their mutation to a specific goal, or they have the ability to increase the rate of random mutation at a specific site in order to take a chance that they will develop a beneficial mutation. I'll give you a hint, it's the latter. We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
The above really depends on what any of us lurkers want to believe. I for one have a problem believing that a new function such as digesting nylon could be formed by random mutations simply because of the complexities inside of the cell. How many things can go wrong and look at the error correction mechanisms inside the cell that catches and corrects something like a 99.99999999% of all errors. From a previous link: Because of the potential harm of mutations, humans and other mammals have evolved to make as few as possible. The machinery inside our cells has the ability to replicate our genomes extremely well, and the polymerase enzymes that replicate our DNA rarely make mistakes. Even when they do, we have multiple, redundant repair and proofreading mechanisms that would make even the most six-sigma-compliant NASA engineer jealous. The quoted statement from above would be more plausible if one of the first Darwinian predictions (below) was correct. "The cell is a simple homogenous globule of plasm" - T. H. Huxley - "Darwin's Bull Dog". And yet we have observable, calculable mutation rates. Bacterial mutation rates are far higher than human mutation rates and your 99.99999999% correction rate is not based on any real information.
quote: Bacterial populations very often exceed 10^10, which means mutation solely due to replicaiton mistakes are pretty common.
So what does the bacteria do with all of those mutations that it can't use? Well, the same thing any population does. A bacterium with a detrimental mutation will either a) die or b) not reproduce as fast as a wild type or beneficial mutant and that mutation "that it can't use" will disappear from the population. It's simply evolutionary theory. Read about it. Edited by Stagamancer, : clarification We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
It's not random if it was induced, by definition. Random mutations have no cause. By random I mean the frame shift/base pair change or whatever IS random. If I induce a die to roll is the outcome no longer random?! By saying random mutations have no cause I think you must be thinking of mutations that occur because of an error in replication. But UV light causes this error, are mutations that are caused by UV, or a chemical no longer random because they were "caused"? No, when a scientist says a random mutation they mean that the outcome (say getting a different, functional protein) is more or less random.
Well no, I never said that the mechanism is mutating for an exact goal. I said it is using mutations to get over time the desired goal. Contradiction, anyone???
But the point is that mutations are not happening out of thin air.
I am consistent. I said from the start that they mutate specific regions and wait for the positive outcome. They don't actually know what's going to happen. Yes, they wait for it to randomly occur! While mutating randomly (like a die rolling) there is a probability that a mutation will arise that gives the bacterium an advantage (like getting the desired number up on the die). Even if this increased mutation rate is induced, each time there is a mutation, it's a random mutation. Most of these mutation will be neutral or harmful, but with enough generations (rolls of the die) the right one will come up, and the bacteria that have that mutation will out-compete the others. It's really quite simple, and you seem to have a hard time grasping what random really means in this context. I've tried to explain it to you many times. This is my last. I'll respond to another argument that you have, but I'm done with this random mutation part. I don't see how it could be any clearer. We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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Stagamancer Member (Idle past 4945 days) Posts: 174 From: Oregon Joined: |
I believe you. I asked the queston because there is at least one other person around here who thinks that the cell will hold on to neutral mutations and use those mutations to build something new. Well, that kind of thing can happen. It all depends on the situation. It is possible that a mutation could occur that in the current environment is neutral, but if the environment changes, it's effect on fitness could become either positive or negative. It's also possible that a neutral mutation could interact with a new mutation in such a way as to give a positive or negative fitness effect. Mutations are all about context. A set of strictly neutral mutations will not be adaptive, but if their put in an environment that causes them to have a fitness effect, they can start to have effects on adaptive evolution.
I think it is called genetic drift? One effect of genetic drift is the accumulation of neutral alleles (another is the fixation or loss of alleles regardless of their fitness advantage) Genetic drift, however has no adaptive power. This has been thoroughly tested, and no scientist claims that genetic drift causes adaptive evolution. However, it does cause evolution in the sense that it can cause a change in the frequency of alleles in a population simply due to sampling error of finite populations. We have many intuitions in our life and the point is that many of these intuitions are wrong. The question is, are we going to test those intuitions? -Dan Ariely
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