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Common knowledge is knowledge that is known by everyone or nearly everyone, usually with reference to the community in which the term is used. Common knowledge need not concern one specific subject, e.g., science or history. Rather, common knowledge can be about a broad range of subjects, such as science, literature, history, and entertainment. Often, common knowledge does not need to be cited. Common knowledge is distinct from general knowledge. The latter has been defined by differential psychologists as referring to "culturally valued knowledge communicated by a range of non-specialist media", and is considered an aspect of ability related to intelligence. Therefore there are substantial individual differences in general knowledge as opposed to common knowledge. The assertion that something is "common knowledge" is sometimes associated with the fallacy ''argumentum ad populum'' (Latin: "appeal to the people"). The fallacy essentially warns against assuming that just because everyone believes something is true, it is true. Misinformation is easily introduced into rumours by intermediate messengers. Many techniques have been developed in response to the question of distinguishing truth from fact in matters that have become "common knowledge". The scientific method is usually applied in cases involving phenomena associated with astronomy, mathematics, physics, and the general laws of nature. In legal settings, rules of evidence generally exclude hearsay (which may draw on "facts" someone believes to be "common knowledge"). "Conventional wisdom" is a similar term also referring to ostensibly pervasive knowledge or analysis. == Examples == Examples of common knowledge: * "Paris is the capital of France." Many capital cities of countries are considered common knowledge by most people. * "The Moon orbits the Earth." Observation of the moon shows us that this happens. In addition, scientific findings give confirmation. At various periods in history, it was regarded as common knowledge that the Earth is flat and that the Sun orbits the Earth, although these theories were later found to be false. * "It is dangerous to mix ammonia and bleach." Though both common household chemicals, accidents involving the mixing of ammonia and bleach are rare, because the potentially lethal danger in their chemical reaction is a widely circulated cautionary tale. * "The Fifth Amendment to the United States Constitution grants American citizens the right to refuse to answer any question in a court of law that would endanger incriminating themselves." "Pleading the Fifth" is a phrase commonly used in American colloquial speak, and even in such popular media as the sketch comedy series ''Chappelle's Show''. Thus it may be regarded as common knowledge in the United States. 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「Common knowledge」の詳細全文を読む スポンサード リンク
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