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In logic, equivocation ("calling two different things by the same name") is an informal fallacy resulting from the use of a particular word or expression in multiple senses within an argument. [ 1 ][ 2 ] It is a type of ambiguity that stems from a phrase having two or more distinct meanings, not from the grammar or structure of the sentence. [ 1 ]
Mental reservation. Mental reservation (or mental equivocation) is an ethical theory and a doctrine in moral theology which recognizes the "lie of necessity", and holds that when there is a conflict between justice and telling the truth, it is justice that should prevail. The doctrine is a special branch of casuistry (case-based reasoning ...
Moral equivalence is a term used in political debate, usually to deny that a moral comparison can be made of two sides in a conflict, or in the actions or tactics of two sides. The term had some currency in polemic debates about the Cold War. "Moral equivalence" began to be used as a polemic term-of-retort to "moral relativism", which had been ...
A formal fallacy, deductive fallacy, logical fallacy or non sequitur (Latin for "it does not follow") is a flaw in the structure of a deductive argument that renders the argument invalid. The flaw can be expressed in the standard system of logic. [ 1 ] Such an argument is always considered to be wrong.
The description of the fallacy in this form is attributed to British philosopher Antony Flew, who wrote, in his 1966 book God & Philosophy, . In this ungracious move a brash generalization, such as No Scotsmen put sugar on their porridge, when faced with falsifying facts, is transformed while you wait into an impotent tautology: if ostensible Scotsmen put sugar on their porridge, then this is ...
In rhetoric and ethics, " two wrongs don't make a right " and " two wrongs make a right " are phrases that denote philosophical norms. "Two wrongs make a right" has been considered as a fallacy of relevance, in which an allegation of wrongdoing is countered with a similar allegation. Its antithesis, "two wrongs don't make a right", is a proverb ...
In everyday reasoning, the fallacy of four terms occurs most frequently by equivocation: using the same word or phrase but with a different meaning each time, creating a fourth term even though only three distinct words are used. The resulting argument sounds like the (valid) first example above, but is in fact structured like the invalid ...
Informal fallacies are a form of incorrect argument in natural language. [ 4 ] An argument is a series of propositions, called the premises, together with one more proposition, called the conclusion. [ 5 ][ 1 ] The premises in correct arguments offer either deductive or defeasible support for the conclusion.