Argument from fallacy

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* Bob says it's true because [[Charles Darwin]] said so - which is an [[argument from authority]], and thus a fallacy.
 
* Bob says it's true because [[Charles Darwin]] said so - which is an [[argument from authority]], and thus a fallacy.
 
* Therefore, evolution is false.
 
* Therefore, evolution is false.
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{{DEFAULTSORT:Fallacy, Argument from}}
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[[Category:Logical fallacies]]

Revision as of 12:59, 12 March 2012

An argument from fallacy is a formal fallacy which occurs when analyzing an argument and assuming that, because the argument contains a logical fallacy the conclusion of that argument must be false. It is also commonly referred to as the fallacist's fallacy.

Form

The form of the argument from fallacy requires a meta-argument, or an argument about the claims of an argument.

There is an argument A which has a conclusion C.
That argument A contains a logical fallacy.
Therefore, C is false.

The issue here is that while the presence of a fallacy is sufficient to render argument A invalid, it does not make C false. Rather, the truth value of C is unknown, because there is no valid argument as to whether C is true or false.

Example

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