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Old 04-10-2006, 07:30 PM   #1
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The logical fallacies thread

Please get them off your chest here, instead of anywhere else. Inquartata, this is for you since you love to point them out so much. Straw men, ad hominem, tautologies, it's all fair game!

"Oh yeah, well there are MILLIONS of Christians in the world, are they ALL wrong?" or how about "This Mexican down the street from me has a messy yard. Mexicans need to go back where they came from."
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Old 04-10-2006, 10:08 PM   #2
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You're confusing a part with the whole, but I don't know the proper term.
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Old 04-11-2006, 01:20 AM   #3
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Quote:
Originally Posted by rcmatthews
You're confusing a part with the whole, but I don't know the proper term.
argumentum ad populum
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Old 04-11-2006, 04:15 AM   #4
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Quote:
Originally Posted by noodle
argumentum ad populum
You're probably not right because you're only a D03 in foil.
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Old 04-11-2006, 12:02 PM   #5
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http://www.fallacyfiles.org/
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Old 04-12-2006, 12:01 AM   #6
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Quote:
Originally Posted by TrainingDummy
Please get them off your chest here, instead of anywhere else.

Er....no?

You are essentially asking us not to raise certain valid objections to people's pet theories because you don't like them. Nothing motivates us to accede to your personal preferences in this regard, however. Sorry, man.
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Old 04-12-2006, 12:01 AM   #7
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Quote:
Originally Posted by rcmatthews
You're confusing a part with the whole, but I don't know the proper term.
Fallacy of composition.
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Old 04-12-2006, 12:03 AM   #8
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Quote:
Originally Posted by noodle
argumentum ad populum
Well, that WOULD be an epeeist's favorite!

But no, populam is the fallacy of believing that the more popular or widespread a belief the more likely it is to be true.
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Old 04-12-2006, 12:14 AM   #9
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Quote:
Originally Posted by Inquartata
But no, populam is the fallacy of believing that the more popular or widespread a belief the more likely it is to be true.
Noodle was just jumping on the bandwagon. It is the #1 choice of discerning fallacists, after all!
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Old 04-12-2006, 10:18 AM   #10
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Quote:
Originally Posted by Inquartata
Er....no?

You are essentially asking us not to raise certain valid objections to people's pet theories because you don't like them. Nothing motivates us to accede to your personal preferences in this regard, however. Sorry, man.
No, no, Mr. Inq., the point is to post our fallacies here rather than elsewhere... but once we start posting fallacies then we'll start posting half-truths, then we'll all just start lying about everything until no one can believe anything that's on F-net and pretty soon that leads to beer drinking!
(I feel an old geometry headache coming on).
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Old 04-12-2006, 10:23 AM   #11
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Can't we just skip all the crap and go to the drinking part?
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Old 04-12-2006, 10:36 AM   #12
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Quote:
Originally Posted by D'Art
Can't we just skip all the crap and go to the drinking part?
What--you're not already there? Dude! Catch up!
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Old 04-12-2006, 10:40 AM   #13
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It is the middle of the afternoon over here, and I have training later on. I probably will be playing catch-up afterwards, though.
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Old 04-12-2006, 03:53 PM   #14
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Quote:
Originally Posted by Inquartata
Well, that WOULD be an epeeist's favorite!

But no, populam is the fallacy of believing that the more popular or widespread a belief the more likely it is to be true.
"Oh yeah, well there are MILLIONS of Christians in the world, are they ALL wrong?"

An argumentum ad populum (Latin: "appeal to the people"), in logic, is a fallacious argument that concludes a proposition to be true because many or all people believe it; it alleges that "If many believe so, it is so." In ethics this argument is stated, "if many find it acceptable, it is acceptable."


"This Mexican down the street from me has a messy yard. Mexicans need to go back where they came from."

A straw man argument is one that misrepresents a position in order to make it appear weaker than it actually is, refutes this misrepresentation of the position, and then concludes that the real position has been refuted. This, of course, is a fallacy, because the position that has been claimed to be refuted is different to that which has actually been refuted; the real target of the argument is untouched by it.
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Old 04-12-2006, 04:26 PM   #15
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Quote:
Originally Posted by Inquartata
But no, populam is the fallacy of believing that the more popular or widespread a belief the more likely it is to be true.
In this case, the fallacy is that your assertion is false. We call this "the fallacy of being wrong". *grin*

"The more popular a belief the more likely it is to be true" is a true statement. This is an appeal to statistics which takes as base that the more often something is observed to be true 'the more likely it is to be true'. The key is in the imprecise language of "more likely" rather then the assertion "is true".

Further, the standard distinction between argumentum ad numerum and argumentum ad populum is that populum appeals to the general area (ie// it is true because the people engaging in the discourse assert it is true) while ad numerum appeals to the statistics of a broader population (lots of people believe in God, therefor, God must exist).

Regardless of the semantical difference, the fallacy argumentum ad numerum is that because a belief is widely held to be true it is therefor absolutely true.

James.
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Old 04-12-2006, 05:49 PM   #16
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Quote:
Originally Posted by jBirch

"The more popular a belief the more likely it is to be true" is a true statement.
Ummmm, no. Every person on the earth could believe something, but that does not increase the probability that it is true. It is virtually impossible to have a statement that is absolutely true. One might even say that the more popular a belief is, the more likely it is to be fallacious.
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Old 04-12-2006, 06:15 PM   #17
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Quote:
Originally Posted by rcmatthews
Ummmm, no. Every person on the earth could believe something, but that does not increase the probability that it is true. It is virtually impossible to have a statement that is absolutely true. One might even say that the more popular a belief is, the more likely it is to be fallacious.
How do you figure? This has nothing to do with absolute truth and everything thing to do with probable truth. How is something believed by a very small group of generic people more probably true then something believed by a very large group of generic people? Remember, belief is the acceptence of information as fact.

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Old 04-12-2006, 07:10 PM   #18
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Quote:
Originally Posted by jBirch
How do you figure? This has nothing to do with absolute truth and everything thing to do with probable truth. How is something believed by a very small group of generic people more probably true then something believed by a very large group of generic people? Remember, belief is the acceptence of information as fact.

James.
fallacy of biased sample
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Old 04-12-2006, 07:24 PM   #19
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And with that, I shall run away...

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Old 04-12-2006, 08:53 PM   #20
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Quote:
Originally Posted by jBirch
How do you figure? This has nothing to do with absolute truth and everything thing to do with probable truth. How is something believed by a very small group of generic people more probably true then something believed by a very large group of generic people? Remember, belief is the acceptence of information as fact.

James.
Because most people are stupid. Therefore, if most people belive something, it doesn't increase the probability that it is a truth.
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