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Exolinguistics (also called xenolinguistics〔The first use of the term "xenolinguistics" in science fiction occurred in 1986, in the novel "Triad" by Sheila Finch.〕 and astrolinguistics〔Daniels, Peter T. "Aliens And Linguists (Book Review)." Library Journal 105.13 (1980): 1516. Academic Search Premier. Web. 7 June 2012.〕〔Schirber, Michael. "Use Grammar To Decipher Alien Tongues." New Scientist 199.2678 (2008): 12. Academic Search Premier. Web. 7 June 2012.〕) is the hypothetical (and fictional) study of the language of alien species. The nature and form of such languages remains purely speculative because so far no search for extraterrestrial intelligence projects have detected signs of intelligent life beyond Earth. The possibility of future contact with intelligent extraterrestrial life has made the question of the structure and form of potential alien language a topic of scientific and philosophical discussion. In addition to creating academic debate, the potential nature of an alien language has also been tackled by science-fiction writers. Some have created fictional languages for their characters to use; others have circumvented the problem by proposing translation devices like the universal translator, or by creating universal languages that all involved species can speak. ==Academia== (詳細はCourse notes ) by assistant professor Sheri Wells-Jensen, Bowling Green State University〕 Life on Earth employs a variety of non-verbal methods of communication, and these might provide clues to hypothetical alien language. Amongst humans alone, these include many visual signals such as sign language, body language, facial expression and writing (including pictures), and it is possible that some extraterrestrial species may have no spoken language. Amongst other creatures, there are some which use other forms of communication, such as cuttlefish and chameleons, which can alter their body color in complex ways as a method of communication,〔(''Nova'', Quick Change Artists )〕 and ants and honey bees, which use pheromones to communicate complex messages to other members of their hives. Dutch mathematician Hans Freudenthal in a 1960 book described Lincos, a constructed language which includes a dictionary that uses basic mathematics as "common ground" to develop a working vocabulary. Dutch mathematical astronomer and computer scientist Alexander Ollongren defined in 2013 in a book new Lincos as an astrolinguistic system based on constructive logic. 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「alien language」の詳細全文を読む スポンサード リンク
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