QUOTE (Lovelynice @ Dec 31 2007, 01:07 AM)

Not really. Science is not dependent on consensus just for starters.
When you say that science is not dependent on consensus, the implication is that we are still working on the merits of the theory. In this case, that is not the situation. When you get to the stage that the information is being disseminated, the theory has already been found to be valid.
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Your "10,000 experts" might not have all studied the report, despite what might be claimed about them by others. I've often seen people make a claim that something must be true simply because "thousands of experts" didn't come out and publicly disagree with it, which doesn't prove a damn thing because those "thousands of experts" might never have even looked at the subject in detail, and have not even thought much about it.
You won't agree that, out of sheer probability, the chances of 10,000 experts in the field looking over a report are more likely to find a significant and fatal flaw to a theory (even if a few inexplicably never look at the subject in detail or think about it much..what made those people experts in the first place?) than a single non-expert?
I certainly hope you aren't proposing that one should entertain the notion that all 10,000 experts failed to look at the report or bothered to think about it. That is an even larger leap to make.
If there is something that does tie all those experts together, something that pretty much assures that the theoretical thousands did look through the report and did think about it, should that not be taken into consideration?
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The claim of popularity of agreement is most often used in error and is often a logical fallacy.
I believe that you are referring to the Argument of Authority, and you are correct, it is both a logical fallacy and is often used incorrectly, such as you are doing here. The Argument of Authority means that you are relying on the testimony of an authority figure without regard as to what the where the authority of the person lies. That means listening to a physics professor when you should be listening to a structural engineer when speaking of a building collapse, or listening to a movie star instead of a security specialist when speaking of security measures.
In this particular example, it was made clear that we were speaking of train experts, making them relevant to the argument.
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It only takes one person to prove all the others wrong, if it turns out that the one person has noticed a detail which the others have not.
Yes, and when that does it is an incredible thing. And incredible things, as everyone knows, require incredible evidence. Anything less is, not surprisingly, less than credible.
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And quite often the alleged "non-expert" does indeed notice things that supposed "experts" didn't notice. Many scientific discoveries have been made by supposed "non-experts" because their thinking was not constrained by a particular dogma.
And far, far more have been made by experts who dedicated their lives to studying that "dogma" and surpassing it. We are, however, not talking about scientific research. We are talking about the investigations that go into conspiracy theories, and I cannot, off the top of my head, think of any conspiracy researcher who has come up with a break-through discovery by virtue of not having enough knowledge of the field.
Can a single non-expert prove all the experts wrong? Sure, watch The
Lifetime Channel and you'll see a movie about it every week. Is it as equal and likely a probability as the 10,000 experts being right, and the non-expert being wrong? No, it is not, and I find it difficult to think how one could support such a stance with a serious face. It seems, however, that to the average conspiracy theorist, it makes absolute sense.