Fallacy

[Sarah]

An argument, or apparent argument, which professes to bedecisive of the matter at issue, while in reality it is not; asophism.

[Sarah]

An untruth. An untrue statement. A wrong idea.

That which is [fallacious].

[Sarah]

In logic, a fallacy is an incorrect conclusion. This may result in one of two ways.

If the structure of the argument is not correct at all, it is called a 'formal' fallacy. One, or both, of the first two propositions would be written incorrectly in relation to the other.
If the structure is correct in the first two propositions, but the conclusion is not put together properly, it is called an 'informal' fallacy.

The usual example of an argument that has no fallacy is:
Socrates is a man.
All men are mortal.
Therefore: Socrates is mortal.
Each sentence is a proposition. No propositions in an argument must be factually true to in order to create an argument with no fallacy; they must only follow the rules of logic. It is when the structure, the rules of logic, does not conform to the 256 various forms of a syllogism, it will contain a 'formal' fallacy. When only the conclusion does not follow the rules, it is an 'informal' fallacy.
Search for 'moods and figures of logic' for a full account of structure in logic.

[Sarah]

A belief in something wrong.

[Sarah]

An amazing song by the band Catherine off their 2007 album The Naturals.

[Sarah]

Something tiny, small, not normal..

[Cami]

Fallacy is using the wrong [reasoning] and [construction] in an [argument].

[Britney]

A mistaken belief, especially one based on unsound arguments.