Logic

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Hello.
How do you prove that a certain logical fallacy is a fallacy indeed?
Are there "fallacies" about which there is a controversy if it is a fallacy or not?
And if in the future, a new fallacy will be discovered, what will be the outline of the proof that one will have to use to prove that it exists? (Just an application of the first question.)
Accepted:December 24, 2009

Accepted:

December 24, 2009