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Syllogistic fallacies – logical fallacies that occur in syllogisms. Affirmative conclusion from a negative premise (illicit negative) – a categorical syllogism has a positive conclusion, but at least one negative premise. [11] Fallacy of exclusive premises – a categorical syllogism that is invalid because both of its premises are negative ...
Argument from fallacy is the formal fallacy of analyzing an argument and inferring that, since it contains a fallacy, its conclusion must be false. [1] It is also called argument to logic (argumentum ad logicam), the fallacy fallacy, [2] the fallacist's fallacy, [3] and the bad reasons fallacy.
Whately divided fallacies into two groups: logical and material. According to Whately, logical fallacies are arguments where the conclusion does not follow from the premises. Material fallacies are not logical errors because the conclusion follows from the premises. He then divided the logical group into two groups: purely logical and semi-logical.
Denying the antecedent is a logical fallacy based on drawing an untrue conclusion from an if–then argument. If X is true, then Y must also be true. More: RI Senate approves 'safe-storage' gun bill.
Venn diagram for "A or B", with inclusive or (OR) Venn diagram for "A or B", with exclusive or (XOR). The fallacy lies in concluding that one disjunct must be false because the other disjunct is true; in fact they may both be true because "or" is defined inclusively rather than exclusively.
Proof by assertion, sometimes informally referred to as proof by repeated assertion, is an informal fallacy in which a proposition is repeatedly restated regardless of contradiction and refutation. [1]
The appeal to novelty (also called appeal to modernity or argumentum ad novitatem) is a logical fallacy in which one prematurely claims that an idea or proposal is correct or superior, exclusively because it is new and modern. [1] In a controversy between status quo and new inventions, an appeal to novelty argument is not in itself a valid ...
Additionally, the appeal to the stone technique is often paired with other logical fallacies that restrict the ability to further dialogue. [11] Participants presenting an appeal to the stone argument may use ad-hominem attacks [12] to avoid the discussion’s topic, or may pair it with a straw-man argument to discredit the other participant. [13]