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De Omnibus Dubitandum - Lux Veritas

Saturday, April 4, 2015

Logical Fallacy of the Day!

Argument from ignorance

(Latin: argumentum ad ignorantiam), also known as appeal to ignorance (in which ignorance stands for "lack of evidence to the contrary"), is a fallacy in informal logic. It asserts that a proposition is true because it has not yet been proven false (or vice versa). This represents a type of false dichotomy in that it excludes a third option, which is that there is insufficient investigation and therefore insufficient information to prove the proposition satisfactorily to be either true or false. Nor does it allow the admission that the choices may in fact not be two (true or false), but may be as many as four,

true
false
unknown between true or false
being unknowable (among the first three).[1]

In debates, appeals to ignorance are sometimes used in an attempt to shift the burden of proofThe fallaciousness of arguments from ignorance does not mean that one can never possess good reasons for thinking that something does not exist, an idea captured by philosopher Bertrand Russell's teapot, a hypothetical china teapot revolving about the sun between Earth and Mars; however this would fall more duly under the arena of pragmatism[vague], wherein a position must be demonstrated or proven in order to be upheld, and therefore the burden of proof is on the argument's proponent.[citation needed] See also Occam's razor ("prefer the explanation with the fewest assumptions").....Read More...

Taxonomy of Logical Fallacies

Formal Fallacies -A formal fallacy is an error in logic that can be seen in the argument's form.[1]All formal fallacies are specific types of non sequiturs.

Informal Fallacies are Informal fallacies – arguments that are fallacious for reasons other than structural (formal) flaws and usually require examination of the argument's content.[12]

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