What is the excluded third?

…of the excluded third (or excluded middle), which asserts that, for every proposition p, either p or not p; and equivalently that, for every p, not not p implies p. This principle is basic to classical logic and had already been enunciated by Aristotle, though with some reservations, as he…

What is meant by fallacy of undistributed middle?

The fallacy of the undistributed middle (Latin: non distributio medii) is a formal fallacy that is committed when the middle term in a categorical syllogism is not distributed in either the minor premise or the major premise. It is thus a syllogistic fallacy.

Is the law of the excluded middle a fallacy?

This is sometimes referred to as the “Fallacy of the Excluded Middle” because it can occur as a misapplication of the Law of the Excluded Middle. This “law of logic” stipulates that with any proposition, it must be either true or false; a “middle” option is “excluded”.

What does the law of excluded middle mean?

In logic, the law of excluded middle (or the principle of excluded middle) states that for any proposition, either that proposition is true or its negation is true.

What did Aristotle say about the law of excluded middle?

In the context of Aristotle’s traditional logic, this is a remarkably precise statement of the law of excluded middle, P ∨ ¬ P . Also in On Interpretation, Aristotle seemed to deny the law of excluded middle in the case of future contingents, in his discussion on the sea battle.

What does the fallacy mean in literary terms?

As has been pointed out the term fallacy is most commonly used in rhetoric to refer to mistakes made in the faulty application of logic. To the exptent that all literary forms can use or misuse logic, such logical fallacies can and have been listed by some under the ehading of “literary devices.”…

Which is the fallacy of the premise that a is not true?

A is not true. Therefore, B is true. As long as there are more options than A and B, then the conclusion that B must be true cannot follow from the premise that A is false. This makes an error similar to that found in the fallacy of Illicit Observation.