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Divine fallacy (argument from incredulity) – arguing that, because something is so phenomenal or amazing, it must be the result of superior, divine, alien or paranormal agency. [20] Double counting – counting events or occurrences more than once in probabilistic reasoning, which leads to the sum of the probabilities of all cases exceeding ...
But "since deductive arguments depend on formal properties and inductive arguments don't, formal fallacies apply only to deductive arguments". [5] A logical form such as "A and B" is independent of any particular conjunction of meaningful propositions. Logical form alone can guarantee that, given true premises, a true conclusion must follow.
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 .
The fallacy often appears when an argument is difficult to oppose. The person making a trivial objection may appear ready to accept the argument in question, but at the same time they will oppose it in many different ways. [1] [2]: 165 These objections can appear in the form of lists, hypotheticals, and even accusations.
An argument from authority [a] is a form of argument in which the opinion of an authority figure (or figures) is used as evidence to support an argument. [ 1 ] The argument from authority is a logical fallacy , [ 2 ] and obtaining knowledge in this way is fallible.
A formal fallacy is contrasted with an informal fallacy which may have a valid logical form and yet be unsound because one or more premises are false. A formal fallacy, however, may have a true premise, but a false conclusion. The term 'logical fallacy' is sometimes used in everyday conversation, and refers to a formal fallacy.
A standard view is that whether an argument is valid is a matter of the argument's logical form. Many techniques are employed by logicians to represent an argument's logical form. A simple example, applied to two of the above illustrations, is the following: Let the letters 'P', 'Q', and 'S' stand, respectively, for the set of men, the set of ...
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