Welcome to the Logical Fallacies section of Safalra's Website.
This section of contains the following pages:
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The fallacy of using an argument of the form 'if A then B, B, therefore A'
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The fallacy of using an argument of the form 'if A then B, not A, therefore not B'
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The fallacy of asserting the truth of the statement 'A or B' when in fact both may be false
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The fallacy of using four terms in a categorical syllogism
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The fallacy of using an argument of the form 'P has not been observed, therefore P does not exist' about a phenomenon P
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The fallacy of using an argument of the form 'proposed solution S does not fully solve problem P, therefore S should not be implemented'
The following four pages are based on work by Stephen Downes, and as such may be used in any way you wish provided you do not claim copyright over it, do not charge for it, and indicate the original authorship - Stephen Downes and Safalra (Stephen Morley).
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The fallacy of assuming something is false if not proven to be true
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The fallacy of treating two separate propositions as a single proposition
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The fallacy of deriving a series of increasingly unacceptable consequences