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Argument from ignorance ((ラテン語: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 may have been an insufficient investigation, and therefore there is insufficient information to prove the proposition 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). In debates, appeals to ignorance are sometimes used in an attempt to shift the burden of proof. == Overview == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「argument from ignorance」の詳細全文を読む スポンサード リンク
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