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Orwell
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19 Jul 2010, 1:01 pm

Meow101 wrote:
I don't believe there is a link between autism and vaccines. It doesn't make sense, for one thing, and for another, there has been absolutely no proof. However, it *is* possible that such evidence exists but we haven't found it yet. Absent such evidence, and given that it makes no sense, I don't believe there is a link, and I certainly would NEVER advocate for not vaccinating without such proof, but it is certainly *possible* that evidence *could* be found in the future.

OK. It is also possible that evidence for a link between clean water and heart disease could be found in the future. The notion of vaccines causing autism has been as completely refuted as is possible in any realm of human knowledge. Look:

If vaccines cause autism, then vaccinated children should have a higher incidence of autism.
Vaccinated children have the same (or lower) incidences of autism compared to unvaccinated children.
Therefore, vaccines do not cause autism.

p implies q.
not q.
therefore not p.

It is quite simple. The only way to disagree with the conclusion is to deny the data; the quantitative empirical evidence.


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Meow101
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19 Jul 2010, 1:09 pm

Orwell wrote:
Meow101 wrote:
I don't believe there is a link between autism and vaccines. It doesn't make sense, for one thing, and for another, there has been absolutely no proof. However, it *is* possible that such evidence exists but we haven't found it yet. Absent such evidence, and given that it makes no sense, I don't believe there is a link, and I certainly would NEVER advocate for not vaccinating without such proof, but it is certainly *possible* that evidence *could* be found in the future.

OK. It is also possible that evidence for a link between clean water and heart disease could be found in the future. The notion of vaccines causing autism has been as completely refuted as is possible in any realm of human knowledge. Look:

If vaccines cause autism, then vaccinated children should have a higher incidence of autism.
Vaccinated children have the same (or lower) incidences of autism compared to unvaccinated children.
Therefore, vaccines do not cause autism.

p implies q.
not q.
therefore not p.

It is quite simple. The only way to disagree with the conclusion is to deny the data; the quantitative empirical evidence.


Oversimplified argument, which assumes that there are no other influences, genetic or environmental, which may contribute to the development of autism. Before you could possibly reduce the argument to a simple modus tollens as you did above, you'd have to exclude all other possible confounding factors BESIDES vaccines, which you haven't done. Just to pull an example out of the air, if all the children in the unvaccinated group were Amish and the ones in the vaccinated group were not, then you have different gene pools going in. There are TONS of variables, so many that you can't POSSIBLY account for all of them, so reducing it to that simple an argument is absurd on its face.

~Kate


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Orwell
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19 Jul 2010, 1:21 pm

Meow101 wrote:
Oversimplified argument, which assumes that there are no other influences, genetic or environmental, which may contribute to the development of autism.

My assumption is the opposite, actually: genetic and environmental causes are almost certainly the main contributors.

Quote:
Before you could possibly reduce the argument to a simple modus tollens as you did above, you'd have to exclude all other possible confounding factors BESIDES vaccines, which you haven't done. Just to pull an example out of the air, if all the children in the unvaccinated group were Amish and the ones in the vaccinated group were not, then you have different gene pools going in. There are TONS of variables, so many that you can't POSSIBLY account for all of them, so reducing it to that simple an argument is absurd on its face.

Properly controlled studies (which were done) eliminate confounding factors as a source of error. They examined large populations of children who were essentially the same, aside from vaccination rates.


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19 Jul 2010, 1:28 pm

Orwell wrote:
AngelRho wrote:
Commercially driven, as in a greed-motivated scam as opposed to providing a genuine, beneficial service.

That so-called "scam" has saved hundreds of millions of lives. But you oppose socialized medicine, correct? If you want medicine administered by private corporations, do you then fault them for being interested in profit? I dunno, that kind of stance just seems myopically hypocritical.

Quote:
And as I recall, the vaccine scare centered on varicella vaccine.

You recall incorrectly. In 1998 Dr. Andrew Wakefield (and a number of coauthors, most of whom have since requested that their contributions be retracted) published a paper in the Lancet alleging a link between the MMR vaccine and autism. Later nut jobs (Jenny McCarthy et al) claimed the cause was the trace quantities of ethyl mercury used in a vaccine preservative. Both claims have been soundly refuted.

The only controversy surrounding the varicella vaccine was whether it is necessary to vaccinate for such a mild illness.

Quote:
So for an actual example, what about the "findings" against the varicella? Data that demonstrated that there was a connection in the first place? Why did the medical community (whatever journal it was) even bother with a retraction of the findings in favor of a connection between the varicella vaccine and autism? Hmmm... Could it POSSIBLY be that because they investigated and found that there really WASN'T a connection? Personally, I side with that view, just in case you're wondering how I could seriously debate the efficacy of vaccines as well as their necessity.

I'm sorry, I will need you to provide something that's actually coherent if I'm going to respond. This paragraph just makes no sense. Are you saying there is or is not a connection?

Quote:
Or COULD it be that a bunch of famous people with autistic children found out the hard way what many other parents have long suspected, that there IS some connection between vaccines and autism, especially considering the timing of vaccines and when the earliest signs of autism appear. It's a neat little coincidence, isn't it? So why WOULDN'T pharmaceutical manufacturers be interested in shutting these people up by providing "research" that "clearly" shows their claims to be false? Think about all the time and money spent in preparing all those chickenpox vaccines that are just going to get thrown in the garbage. If the pharms aren't making any money, they aren't going to pay researchers to develop new drugs.

For one thing, several of the studies were carried out by governmental agencies in other countries that really don't give a damn about profits for the pharmaceutical industry. That's the wonderful thing about science: independence, openness, and reproducibility in all results.

Quote:
I mean, SURE, the research is freely available. They WANT you to see what they've doctored up in support of their claims that the new vaccine is completely harmless.

So you posit a massive international conspiracy to cover up the harmful effects of the chickenpox vaccine? That a large number of studies by multiple independent groups were all coordinated and used deliberately falsified data? For what motive would they go to such great lengths? If they just want to scam people and get money, they can do it a lot easier by following the homeopath's example.


:shrug:

Well, if that's true, then, OK, you win. I think you were taking me WAY too seriously!



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19 Jul 2010, 1:38 pm

God is dead, we're working on J.K.Rowling. :P

(In the nietzschean sense)



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19 Jul 2010, 1:42 pm

Orwell wrote:
Meow101 wrote:
Oversimplified argument, which assumes that there are no other influences, genetic or environmental, which may contribute to the development of autism.

My assumption is the opposite, actually: genetic and environmental causes are almost certainly the main contributors.

Quote:
Before you could possibly reduce the argument to a simple modus tollens as you did above, you'd have to exclude all other possible confounding factors BESIDES vaccines, which you haven't done. Just to pull an example out of the air, if all the children in the unvaccinated group were Amish and the ones in the vaccinated group were not, then you have different gene pools going in. There are TONS of variables, so many that you can't POSSIBLY account for all of them, so reducing it to that simple an argument is absurd on its face.

Properly controlled studies (which were done) eliminate confounding factors as a source of error. They examined large populations of children who were essentially the same, aside from vaccination rates.


If all errors were eliminated from all studies, then there would never be any changes in what we conclude. That is obviously not the case in medical science...just look at what's happened with cholesterol in the last couple of decades. Another good example is hormone replacement therapy after menopause, and I don't think all the data are in on that either. Treatment of recurrent febrile seizures, from my own field. There are many things that were thought to be "settled" and weren't. My fundamentalist Christian debate opponents seize on that all the time as to why their "unchanging" religion is superior to my "changeable" science. My point is that there are data out there that we don't know about, and that may not even be discovered in our lifetimes. The universe is a vast place. We're tiny, and we're about as far from omniscient as you can get. That ought to give anyone pause before being too confident.

~Kate


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19 Jul 2010, 1:51 pm

Meow101 wrote:
I don't believe there is a link between autism and vaccines. It doesn't make sense, for one thing, and for another, there has been absolutely no proof. However, it *is* possible that such evidence exists but we haven't found it yet. Absent such evidence, and given that it makes no sense, I don't believe there is a link, and I certainly would NEVER advocate for not vaccinating without such proof, but it is certainly *possible* that evidence *could* be found in the future.

Similarly, I do not worship a deity, or try to restrict people's freedom based on some rule-book one allegedly wrote, without adequate evidence, but neither do I discount the possibility that some form of supreme being *could* exist (of course that doesn't necessarily mean the christian god...)

~Kate

A mere logical possibility doesn't mean "agnosticism" though. The reason is that most people don't consider debunking a logical possibility as required for disbelieving something. It is entirely possible that Elvis was abducted by aliens and that his corpse was really a very well-constructed fake(aliens did the constructing, after all). The problem is that this is ridiculous and there is no reason to believe it, so I don't and I am confident that it didn't happen.

The rule that "you must completely discount all possibilities of something" to claim knowledge is ridiculous. If it were necessary, then we couldn't ever claim to know anything, period.



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19 Jul 2010, 2:15 pm

Awesomelyglorious wrote:
are you agnostic to fairies? Unicorns? Frogmen? etc?

I am.


well, the issue is that absence of evidence is related to argument from ignorance, so in some circunstances it seems to be valid.

Quote:
The phrase absence of evidence is not evidence of absence can be used as a short hand rebuttal to the second form of this fallacy (i.e. P never proven therefore false) but is often directed more generally at any conclusion derived from or involving null results from experiment or the non-detection of something.
------------------------------
Carl Sagan
From: The Demon-Haunted World: (Chapter 12 - The Fine Art of Baloney Detection.)

"Appeal to ignorance -- the claim that whatever has not been proved false must be true, and vice versa (e.g., there is no compelling evidence that UFOs are not visiting the Earth; therefore UFOs exist -- and there is intelligent life elsewhere in the Universe. Or: there may be seventy kazillion other worlds, but not one is known to have the moral advancement of the Earth, so we're still central to the Universe.) This impatience with ambiguity can be criticized in the phrase: absence of evidence is not evidence of absence."


However, this is much like Orwell's point on the issue.
Quote:
In this regard Irving Marmer Copi writes:

"In some circumstances it can be safely assumed that if a certain event had occurred, evidence of it could be discovered by qualified investigators. In such circumstances it is perfectly reasonable to take the absence of proof of its occurrence as positive proof of its non-occurrence." (Introduction to Logic, Copi, 1953, Page 95)


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19 Jul 2010, 2:27 pm

Ferdinand wrote:
Atheists, riddle me this: if God doesn't exist, then how come he has a name?

Yeah. Thought so.

Yes, not only that but God is a concept, and the concept and idea of God exist in people's minds and "hearts" as well as it has a name, and given that the idea of God exists, therefore God exists, even if not physically, but still.

Revelation exists, as in the revelation of God from scripture, and revelation is not empirical, otherwise it wouldn't be revelation. And atheists, lack revelation, they don't have the spiritual capability to comprehend it, so it is sad.... or perhaps a joy, that salvation is impossible.


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19 Jul 2010, 2:55 pm

Image


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19 Jul 2010, 3:04 pm

Awesomelyglorious wrote:
Meow101 wrote:
I don't believe there is a link between autism and vaccines. It doesn't make sense, for one thing, and for another, there has been absolutely no proof. However, it *is* possible that such evidence exists but we haven't found it yet. Absent such evidence, and given that it makes no sense, I don't believe there is a link, and I certainly would NEVER advocate for not vaccinating without such proof, but it is certainly *possible* that evidence *could* be found in the future.

Similarly, I do not worship a deity, or try to restrict people's freedom based on some rule-book one allegedly wrote, without adequate evidence, but neither do I discount the possibility that some form of supreme being *could* exist (of course that doesn't necessarily mean the christian god...)

~Kate

A mere logical possibility doesn't mean "agnosticism" though. The reason is that most people don't consider debunking a logical possibility as required for disbelieving something. It is entirely possible that Elvis was abducted by aliens and that his corpse was really a very well-constructed fake(aliens did the constructing, after all). The problem is that this is ridiculous and there is no reason to believe it, so I don't and I am confident that it didn't happen.

The rule that "you must completely discount all possibilities of something" to claim knowledge is ridiculous. If it were necessary, then we couldn't ever claim to know anything, period.


There is some merit to Descartes' writings on what we can know, before he got all scared of the Catholic church and started backpeddling...though back in the day they did kill people, so I guess there was something to fear...

But anyway, I digress. What we can know about the physical world is at least potentially able to be pinned down by good scientific method. Non-physical entities like gods and demons and souls...there's no way. Not with the methods we have now. While I *tend* to consider those things woo-woo, there isn't the ability to prove the believer wrong at this point.

~Kate


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19 Jul 2010, 3:21 pm

Meow101 wrote:
There is some merit to Descartes' writings on what we can know, before he got all scared of the Catholic church and started backpeddling...though back in the day they did kill people, so I guess there was something to fear...

But anyway, I digress. What we can know about the physical world is at least potentially able to be pinned down by good scientific method. Non-physical entities like gods and demons and souls...there's no way. Not with the methods we have now. While I *tend* to consider those things woo-woo, there isn't the ability to prove the believer wrong at this point.

~Kate

Not really, Descartes position is still relatively unstable. The fact of the matter is that the skeptical arguments against knowledge can't be defeated, they're just too absurd to accept. And recognizing that ends up requiring that unless we want to dispense with the idea of better and worse ideas altogether, we have to take a stand and say that certain things, even if they can't be outright refuted, are silly to believe. I mean, heck, if you want, we can question whether there really IS a physical world. I mean, I doubt you could refute the idea there isn't. I'm still not agnostic on the matter though.

Gods, are they sensible to believe? Not really, because we are bringing in the possibility of something inordinately complex and well, even if they are not physical, they are generally conceived as interacting somewhat with the physical world. We don't see this interaction or signs of it. Because of this there is little reason to believe in them, and a lot of reason not to.

Demons are pretty similar to gods.

Souls end up tending to tie themselves down to claims about personal identity. The problem is that these claims about personal identity end up running into a large set of hard problems that lead us to question whether there is enough psychological continuity to furnish us something like a person's essence, or whether there is enough of a line between souled and non-souled that the distinction becomes relevant.

Now, you are right, we can continue being agnostic towards these issues, but.... it ends up being silly. You might say "We can't disprove these things", but you can't prove that the world didn't come into existence 5 minutes ago with our memories of a longer time period included! Are you agnostic to the idea that you are really only 5 minutes old, along with everything else???



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19 Jul 2010, 4:20 pm

Awesomelyglorious wrote:
Not really, Descartes position is still relatively unstable. The fact of the matter is that the skeptical arguments against knowledge can't be defeated, they're just too absurd to accept. And recognizing that ends up requiring that unless we want to dispense with the idea of better and worse ideas altogether, we have to take a stand and say that certain things, even if they can't be outright refuted, are silly to believe. I mean, heck, if you want, we can question whether there really IS a physical world. I mean, I doubt you could refute the idea there isn't. I'm still not agnostic on the matter though.


Have your senses never been wrong about anything? You mean you've never "seen" one of those "puddles" that really wasn't there on a hot road? Hmmmm....*obviously* Descartes had a point. Does that mean we can't know *anything*? No. Does it mean we have to recognize that our ability to know things is limited? Absolutely.


Quote:
Gods, are they sensible to believe? Not really, because we are bringing in the possibility of something inordinately complex and well, even if they are not physical, they are generally conceived as interacting somewhat with the physical world. We don't see this interaction or signs of it. Because of this there is little reason to believe in them, and a lot of reason not to.


Well...not all gods are perceived as interacting with the physical world...some belief systems postulate god(s) that set things in motion and step back. But I neither believe they exist nor believe they don't, nor do I find compelling reason to "make up (my) mind, dammit" ( :lol: )

Quote:
Demons are pretty similar to gods.

Souls end up tending to tie themselves down to claims about personal identity. The problem is that these claims about personal identity end up running into a large set of hard problems that lead us to question whether there is enough psychological continuity to furnish us something like a person's essence, or whether there is enough of a line between souled and non-souled that the distinction becomes relevant.

Now, you are right, we can continue being agnostic towards these issues, but.... it ends up being silly. You might say "We can't disprove these things", but you can't prove that the world didn't come into existence 5 minutes ago with our memories of a longer time period included! Are you agnostic to the idea that you are really only 5 minutes old, along with everything else???


Again, this can be tested. Non-physical entities cannot.

~Kate


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19 Jul 2010, 4:41 pm

^^Greetings everyone. I am very sorry as I have not read all text within this little topic.

^^ I believe I agree with you very much Meow101, as I believe that I too am very much agnostic.

Now, Awesomely Glorious, concerning your Elvis argument: I believe I consider myself agnostic as I understand that others believe what they believe in as strongly as I believe what I believe in. So, if a happy human really believed that Elvis was abducted by aliens, and I could not find any evidence to contrary, and they were not causing any harm, then I see no reason to claim that I am 100% correct and they 100% incorrect. However, if there is no such individual who believes this, then I will probably not consider the abduction theory as I believe this is very unlikely and do not need to consider beliefs of others in this theory.

Also AwesomelyGlorious, I believe we have discussed within the past that language and definitions may be a barrier. Therefore, I have used the idea of agnosticism as discussed within Wikipedia.

^^Also, Orwell, I find your arguments also very interesting. I agree certainly that absence of evidence is evidence of absence. Evidence, indeed, but not proof. This argument also works against you. There is no evidence to the absence of God, either, I believe (perhaps there may be for one particular God, by not for any arbitrary God). So this is evidence to the presence of God, by the above argument. Thus they cancel out one another.

I am very sorry if I have been horrible.


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19 Jul 2010, 4:47 pm

You cannot prove that Elvis was NOT abducted by aliens beyond the shadow of a doubt.


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19 Jul 2010, 4:50 pm

greenblue wrote:
You cannot prove that Elvis was NOT abducted by aliens beyond the shadow of a doubt.


^^I agree with you very much greenblue.


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