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ruveyn
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06 Jun 2010, 6:10 am

Gromit wrote:
iamnotaparakeet wrote:
Gromit wrote:
You can also compare phylogenies based on independent traits. The prediction of evolutionary theory is that they should be highly correlated. They are.

'1) Theory T predicts observation O;
2) O is observed;
∴ T is true.

And that is affirming the consequent.

Correct, and totally irrelevant. If you want to know which of several competing hypotheses is favoured by the data, you need to apply a little probability theory. Deductive logic is not up to the job. Do you want to look it up yourself or do you want me to give you an example calculation?

iamnotaparakeet wrote:
As for predictions, I don't know and I'm not looking it up for you, but there is a criterion of viable hybridization for creatures to be within the same monobaramin.

I found nothing relevant to my question in the article you linked to. If you can't find anything, or are unwilling to tell what the theory you defend has to say, shall we take that to mean it has no prediction?


Theory T implies observation O. O is confirmed experimentally. Therefore T might be correct. Theory T implies observation O. O is disconfirmed empirically -- therefore T is false. That is the principle of falsification in a nutshell.

We cannot say when our scientific theories are right, be we can often prove they are wrong.

ruveyn



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06 Jun 2010, 11:16 am

iamnotaparakeet wrote:
01001011 wrote:
iamnotaparakeet wrote:
... but I for one am a creationist that accepts variation within kind, whereas "kind" is generally approximated by the "family" level of the two and five kingdom taxonomic systems. All the different "kinds of birds"... "birds" being an order and the kinds being, for a lot of most populations, psittacus (parrot) and passer (finch/sparrow/canary/etc) are primarily seen and these are different kinds. There are other "kinds" within the order of birds in general though, as I'm fairly certain all owls would be of the same kind as would all ducks (perhaps geese, swans, and ducks are all of the same kind, but I don't know). I'm not going into detail as I'm certain I've already stated something incorrectly and it will get nitpicked, but this is not just an idea of mine, see:

http://creation.com/a-baraminology-tuto ... es-poaceae


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All classification schemes are completely arbitrary, however they can be useful in determining secondary characteristics, such as behavior patterns associated with various varieties of animals and toxicity or edibleness of plants and fungi.

Also, the human foot is dissimilar enough to all apes to count us a separate kind.


On one hand, iamnotaparakeet asserts that there are rigid evolution barriers between kinds. On the hand s/he asserts the classification is arbitrary (which is indeed the case as s/he never give any rigorous definition of kind). This is just self defeating. FAIL. :lol:


Why are you so lazy as to not even see my profile where it says I'm male... oy.


No defense against my criticism? :shrug:



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06 Jun 2010, 11:38 am

iamnotaparakeet wrote:
Gromit wrote:
iamnotaparakeet wrote:
Taxonomic systems are by default more qualitative though, and usually are based upon morphological differences or feeding differences or otherwise qualitative criteria with a Boolean "true/false" value. In chemistry you have the quantitative differences of electronegativity, atomic radius, etc, which do appear to be in accord with the periodic table.

Use molecular phylogenies, if you like. You can also compare phylogenies based on independent traits. The prediction of evolutionary theory is that they should be highly correlated. They are. Evolutionary theory also predicts that the same should be true for as yet undiscovered species. That makes it prescriptive. You can test that prediction at moderate cost if you learn taxonomy and know where to look for new species. Does creationism have anything to say about this that is not based on ad hoc assumptions?


'1) Theory T predicts observation O;
2) O is observed;
∴ T is true.

1) If I had just eaten a whole pizza, I would feel very full;
2) I feel very full;
∴ I have just eaten a whole pizza.'

And that is affirming the consequent.

Making predictions and having them occur is to speak in favor of a theory, since if the prediction was not observed then the theory would be obviously false, since that would be shown through denying the consequent which is valid.

I'm not sure where you're going with this. The concept of rigorous logical proof does not exist in any field of human study except mathematics. We have evidence in favor of or in opposition to a theory, and something is considered to be "proven" once there is a sufficiently large body of evidence that is well-explained by one theory and not by others.

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As for predictions, I don't know and I'm not looking it up for you, but there is a criterion of viable hybridization for creatures to be within the same monobaramin.

Sheesh, do you even read your own sources? Baraminologists contend that two species can belong to the same monobaramin even if they cannot hybridize.


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Asmodeus
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06 Jun 2010, 11:44 am

iamnotaparakeet wrote:
greenblue wrote:
iamnotaparakeet wrote:
'1) Theory T predicts observation O;
2) O is observed;
∴ T is true.

Actually, T can't claim to be the truth
and T is supported by overwhelming evidence.

But, T can't claim truthness.
T is falsiable.

For theory T to make it a valid theory it cannot claim absolute certainty.


Greenblue, I think that "overwhelming evidence" is not proper to say, since, although a theory may have a heck of a lot of evidence in its favor (whether actually or in interpretation merely) all it takes is evidence in opposition to the theory to falsify it, such as the absence of the possibility of "a step by step progression" from one organism to the next.

Sorry,what wasthat?

Incorrect I believe.



Jono
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06 Jun 2010, 11:50 am

iamnotaparakeet wrote:
greenblue wrote:
iamnotaparakeet wrote:
'1) Theory T predicts observation O;
2) O is observed;
∴ T is true.

Actually, T can't claim to be the truth
and T is supported by overwhelming evidence.

But, T can't claim truthness.
T is falsiable.

For theory T to make it a valid theory it cannot claim absolute certainty.


Greenblue, I think that "overwhelming evidence" is not proper to say, since, although a theory may have a heck of a lot of evidence in its favor (whether actually or in interpretation merely) all it takes is evidence in opposition to the theory to falsify it, such as the absence of the possibility of "a step by step progression" from one organism to the next.


And you can provide such evidence?



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06 Jun 2010, 2:05 pm

ruveyn wrote:
Theory T implies observation O. O is confirmed experimentally. Therefore T might be correct. Theory T implies observation O. O is disconfirmed empirically -- therefore T is false. That is the principle of falsification in a nutshell.

That's what you do if you consider one hypothesis at a time. That doesn't address iamnotaparakeet's attempted refutation of my point. I am talking about comparing hypotheses. There are statistical approaches for that as well. He can look it up, he can ask for an example calculation, he can admit that his argument is irrelevant, or he can ignore me and hope the issue just goes away.

The point is that you can demonstrate that a "stuff happens" kind of theory that is consistent with any evidence is a weak theory. I am not sure iamnotaparakeet understands this, It appears AngelRho either doesn't understand it or doesn't want to know. He asked AG earlier in this thread:
AngelRho wrote:
I'm not sure I understand what the whole ad hoc problem is.

Then a bit later he wrote this:
AngelRho wrote:
He also has the power to intervene in it in so-called "ad hoc" kinds of ways.

He appeared to think that was an argument in favour of creationism.



AngelRho
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06 Jun 2010, 3:41 pm

Gromit wrote:
It appears AngelRho either doesn't understand it or doesn't want to know.


It's merely a way to get information. One's own ideas of religion aren't very substantial if the person arguing in favor of them doesn't understand their depth, or whether they have any depth at all. My questions about "ad hoc" statement was just an attempt to understand exactly what it was AG meant, which he satisfactorily explained. I'm still not sure I understand, though, exactly why ad hoc-ness is so egregious since so many so-called scientific "truths" have some ad hoc element to them. The idea in chemistry, for example, that ions behave in specific kinds of ways in the formation of more complex molecules doesn't seem to have that much bearing on nuclear unstable elements in the process of decay. Yet a thorough understanding of the basics of chemistry is required of high school students in order to graduate. In relation to other things, nuclear and molecular reactions by nature ARE ad hoc.

The intervention of God in the natural world is also ad hoc in relation to scientific principles and, by nature of the intervention, is necessarily so. But in relation to the nature of God and how God manifests Himself within the physical world according to Biblical principles, divine intervention is not ad hoc at all.

So by dismissing everything you don't like as ad hoc, you don't really get very far. It's like eating an orange and complaining because it doesn't taste like a cherry. Why should it?

Anyway, I have time enough to get it figured out. I'm not exactly that concerned, anyway.

Fundamentally, my ideas and sentiment haven't changed. I knew full well that evolutionists are well informed within their area of knowledge. But as was pointed out to me, there is also a lot of MISinformation within the creationist community.

There are, however, enough problems with science in general that it can't be relied upon as much as some of those here seem to believe.

It has nothing to do with whether we are able to observe the natural world and draw conclusions from it. It has to do with how tightly we cling to it.

For example, it seems to me that Gromit, AG, and ruveyn (for example) APPEAR to hold the idea ONLY those things that exist in nature and are observable are true. Now, of course, I don't KNOW these three quite well, so it is possible that making that statement is in error. I've observed ruveyn saying this kind of thing outright. Gromit and greenblue only seem to disagree with me because I'm the one making the statement. ;) (Just kidding, of course). AG seems to just be comically STRIDENT, but adamantly does NOT believe in the existence of God or the Spirit/soul/consciousness/etc. Before I continue on, I should probably ask who here does NOT believe in ANYTHING that is unseen--that means ANYTHING. If science can't prove or at least show that something exists, then it does not exist, nor can it. It is, therefore, untrue. Any takers?



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06 Jun 2010, 4:14 pm

AngelRho wrote:
There are, however, enough problems with science in general that it can't be relied upon as much as some of those here seem to believe.

See, this is a large part of why creationism is harmful. You go from creationism to generally distrusting science, the institution most responsible for the quality of life we enjoy today.


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06 Jun 2010, 4:18 pm

yes we know dude. a volcano can add alot of debries in a short period of time, making it look like millions of years. but there was not a worldwide flood atleast not with humanity on board. if anything the flood was localized and very devistating


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iamnotaparakeet
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06 Jun 2010, 4:25 pm

Orwell wrote:
AngelRho wrote:
There are, however, enough problems with science in general that it can't be relied upon as much as some of those here seem to believe.

See, this is a large part of why creationism is harmful. You go from creationism to generally distrusting science, the institution most responsible for the quality of life we enjoy today.


No, at least not for me. Most scientists are quite honest and able to be objective when it comes to physical sciences and applications thereof, but it is only where origins are concerned that many genuflect at today's most sacred cow.



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06 Jun 2010, 4:26 pm

AngelRho wrote:
Before I continue on, I should probably ask who here does NOT believe in ANYTHING that is unseen--that means ANYTHING. If science can't prove or at least show that something exists, then it does not exist, nor can it. It is, therefore, untrue. Any takers?


Do you believe there is an invisible fire breathing dragon standing at your back that can roast you alive anytime? Why?

Quote:
There are, however, enough problems with science in general that it can't be relied upon as much as some of those here seem to believe.


And you think a magic book written by people 2000 years ago more reliable?



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06 Jun 2010, 4:30 pm

AngelRho wrote:
It's merely a way to get information. One's own ideas of religion aren't very substantial if the person arguing in favor of them doesn't understand their depth, or whether they have any depth at all. My questions about "ad hoc" statement was just an attempt to understand exactly what it was AG meant, which he satisfactorily explained. I'm still not sure I understand, though, exactly why ad hoc-ness is so egregious since so many so-called scientific "truths" have some ad hoc element to them. The idea in chemistry, for example, that ions behave in specific kinds of ways in the formation of more complex molecules doesn't seem to have that much bearing on nuclear unstable elements in the process of decay. Yet a thorough understanding of the basics of chemistry is required of high school students in order to graduate. In relation to other things, nuclear and molecular reactions by nature ARE ad hoc.

Well, the strange issue is that there probably isn't real depth, just the fake depth made from excuses made by believers. For instance, I remember hearing once from a self-proclaimed Calvinist that God planted the apple in the garden of Eden with the intention to give it to mankind if it proved itself worthy. The problem with this explanation is that there is no reason for God to plan out something that will never happen. In fact, it makes no sense to even make such a plan. (Orwell will probably find this story reflects how stupid many Christians are)

As for why "ad hocness" is egregious, it is partially a matter of degree. If the entire story is kept together by ad hoc assumptions, then it ceases to make sense. In the case of creationism, we see that this idea has crossed the line. In sciences, we see that scientists can't explain perhaps the physical constants, but that's pretty basic and hardly ad hoc given that these constants are continaully observed.

Nuclear and molecular reactions actually follow different sets of rules explained by quantum mechanics. Their actions are random in a relatively known probabilistic manner, but they are not ad hoc.

Quote:
The intervention of God in the natural world is also ad hoc in relation to scientific principles and, by nature of the intervention, is necessarily so. But in relation to the nature of God and how God manifests Himself within the physical world according to Biblical principles, divine intervention is not ad hoc at all.

The story of the flood is just silly, and any set of assumptions that could begin to make it make sense would end up being ridiculous given the large number of problems I pointed out, such as with kangaroos and Australia, and a number of other things.

Quote:
So by dismissing everything you don't like as ad hoc, you don't really get very far. It's like eating an orange and complaining because it doesn't taste like a cherry. Why should it?

Actually we do. You just fail to understand this, and whether this is ignorance or chosen ignorance is a difficult question.

Quote:
There are, however, enough problems with science in general that it can't be relied upon as much as some of those here seem to believe.

You don't even KNOW science well enough to meaningfully criticize it. Particularly given that science compared to other attempts to gain knowledge is fully deserving of sainthood for what it has brought.

Quote:
It has nothing to do with whether we are able to observe the natural world and draw conclusions from it. It has to do with how tightly we cling to it.

No, it really does have to do with the natural world.

Quote:
For example, it seems to me that Gromit, AG, and ruveyn (for example) APPEAR to hold the idea ONLY those things that exist in nature and are observable are true. Now, of course, I don't KNOW these three quite well, so it is possible that making that statement is in error. I've observed ruveyn saying this kind of thing outright. Gromit and greenblue only seem to disagree with me because I'm the one making the statement. ;) (Just kidding, of course). AG seems to just be comically STRIDENT, but adamantly does NOT believe in the existence of God or the Spirit/soul/consciousness/etc. Before I continue on, I should probably ask who here does NOT believe in ANYTHING that is unseen--that means ANYTHING. If science can't prove or at least show that something exists, then it does not exist, nor can it. It is, therefore, untrue. Any takers?

Here is my stance:
If neither science nor logic can discover the existence of something, we should not believe it exists. Now, science is contingent, and the science of tomorrow might include things missing in the science of today, BUT, science as a body is smarter than you, me, Gromit, and everyone else in this thread, even put together, so regardless of my guesses, I can be sure that the scientific process is more likely to be correct.



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06 Jun 2010, 4:34 pm

richardbenson wrote:
yes we know dude. a volcano can add alot of debries in a short period of time, making it look like millions of years. but there was not a worldwide flood atleast not with humanity on board. if anything the flood was localized and very devistating


RichardBenson, if you are referring to Dr Austin's work regarding Mt Saint Helens, the formation of layers then was not inductively generalized to say that it was all due to volcanism. Certainly volcanism would have been involved with the continental plates moving apart from the supercontinent (as it is in most models of how the flood occurred, regardless of whether to proposed mechanism is runaway subduction or not), but that the strata have the ability to be laid rapidly as demonstrated even 30 years ago by Mount St Helens. There have been many other experiments done to show the rapid formation of strata possible (in the Technical Journal of Creation, I think one from the early 90's) by water at various flow rates and mixture levels. The example of the volcanic strata is good as an example of it not just being in the laboratory only that strata can be made quickly.



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06 Jun 2010, 4:45 pm

iamnotaparakeet wrote:
richardbenson wrote:
yes we know dude. a volcano can add alot of debries in a short period of time, making it look like millions of years. but there was not a worldwide flood atleast not with humanity on board. if anything the flood was localized and very devistating


RichardBenson, if you are referring to Dr Austin's work regarding Mt Saint Helens, the formation of layers then was not inductively generalized to say that it was all due to volcanism. Certainly volcanism would have been involved with the continental plates moving apart from the supercontinent (as it is in most models of how the flood occurred, regardless of whether to proposed mechanism is runaway subduction or not), but that the strata have the ability to be laid rapidly as demonstrated even 30 years ago by Mount St Helens. There have been many other experiments done to show the rapid formation of strata possible (in the Technical Journal of Creation, I think one from the early 90's) by water at various flow rates and mixture levels. The example of the volcanic strata is good as an example of it not just being in the laboratory only that strata can be made quickly.
i respect your christian views now but you really are a fool if you think the earth is only 10,000 years old.
civilization is about that old


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06 Jun 2010, 5:15 pm

AngelRho wrote:
since so many so-called scientific "truths"...........

The problem is that you don't seem to understand how Science actually works when you try to make a case against it, Science is not about truth, it doesn't claim truths. Science is fallible and it does recognize that, however, it is the best thing we have to understand reality.

Quote:
The intervention of God in the natural world is also ad hoc in relation to scientific principles and, by nature of the intervention, is necessarily so. But in relation to the nature of God and how God manifests Himself within the physical world according to Biblical principles, divine intervention is not ad hoc at all.

Evidence Please?

Ideas such as divine intervention and how God works are not testable, do not give room for falsiability, they ARE ad hoc.

Quote:
So by dismissing everything you don't like as ad hoc, you don't really get very far. It's like eating an orange and complaining because it doesn't taste like a cherry. Why should it?

That actually seems to be your position.

Quote:
There are, however, enough problems with science in general that it can't be relied upon as much as some of those here seem to believe.

Science is the most reliable method for getting information and understanding the world and reality around us, religion hasn't been succesfully able to explain natural phenomena for millenia by itself such as deseases and natural disasters which were attribuited to supernatural causes, until science solved those problems and religion itself has had to adjust somehow to new discoveries and knowledge gain from science.

Quote:
For example, it seems to me that Gromit, AG, and ruveyn (for example) APPEAR to hold the idea ONLY those things that exist in nature and are observable are true.

Physical things can be observed and can be tested, there are no empirical evidence for supernatural claims, yet, and they, well at least ruveyn, uses the occam's razor principle which I believe concludes that not only supernatural=magic, but also the universe doesn't operate by magical forces it does by natural laws. Also there is the issue that supernatural explanations are consequences of human beings being unable to explain phenomena they don't understand and don't know about, therefore they speculate, therefore ad hoc explanations.

Quote:
Gromit and greenblue only seem to disagree with me because I'm the one making the statement. ;)

Of course, why else would we disagree with you :P

Quote:
If science can't prove or at least show that something exists, then it does not exist, nor can it. It is, therefore, untrue. Any takers?

Science needs testable evidence to confirm anything, otherwise that something would and should be subjected to doubts until then, and science can't confirm a negative.

Also, I believe that Science should not have anything to do with directly proving wether God exists or not or how God is, atheism is a philosophical principle rather than scientific.

By the way, Evolution does not disprove God, it only conflicts with biblical literalism.


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06 Jun 2010, 6:43 pm

01001011 wrote:
AngelRho wrote:
Before I continue on, I should probably ask who here does NOT believe in ANYTHING that is unseen--that means ANYTHING. If science can't prove or at least show that something exists, then it does not exist, nor can it. It is, therefore, untrue. Any takers?


Do you believe there is an invisible fire breathing dragon standing at your back that can roast you alive anytime? Why?

Quote:
There are, however, enough problems with science in general that it can't be relied upon as much as some of those here seem to believe.


And you think a magic book written by people 2000 years ago more reliable?


Binarydude:

You chose to address me and the questions I asked. Don't ask ME what I think... Answer the question yourself.

AG answered the question--if science/logic cannot reveal something, then it does not exist (I'm paraphrasing to be a bit more precise since AG's answer appears somewhat wishy-washy--let me know if that changes the meaning too much). I'm confident in rewording it as such because if something does not exist, then no, we should not believe it. So my paraphrase is a distillation. I've seen ruveyn to be much more precise, so before I continue, I want to make sure these terms are perfectly clear.

Greenblue also seems to me to be in concurrence.