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A lie-to-children is a simplified explanation of technical or complex subjects as a teaching method for children and laypeople, first described by science writers Jack Cohen and Ian Stewart. The word "children" should not be taken literally, but as encompassing anyone in the process of learning about a given topic regardless of age. It is itself a simplification of certain concepts in the philosophy of science. Because some topics can be extremely difficult to understand without experience, introducing a full level of complexity to a student or child all at once can be overwhelming. Hence elementary explanations are simplified in a way that makes the lesson more understandable, though technically wrong. A lie-to-children is meant to be eventually replaced with a more sophisticated explanation which is closer to the truth. Such statements are not usually intended as deceptions, and may in fact be true as a first approximation or within certain contexts. For example, Newtonian mechanics is less accurate than the theory of relativity at high speeds and quantum mechanics on small scales, but it is still a valid approximation to those theories in many situations. A lie-to-children is sometimes referred to as a Wittgenstein's ladder, after the Austrian philosopher Ludwig Wittgenstein. ==Origin== The term "Wittgenstein's ladder" stems from proposition number 6.54 in Austrian philosopher Ludwig Wittgenstein's 1921 philosophical work ''Tractatus Logico-Philosophicus, in which he states that his propositions, when eventually recognized as nonsensical, can be used "as steps to climb beyond them".〔(【引用サイトリンク】title=Tractatus Logico-Philosophicus Side-by-Side-by-Side Edition )〕 The term "lie-to-children" appeared in the book ''The Science of Discworld'' (2000), co-authored and partly based on ideas created by Terry Pratchett, and in ''The Collapse of Chaos'' (1994) and ''Figments of Reality'' (1997), both by the other two co-authors of ''The Science of Discworld'', Ian Stewart and Jack Cohen. The definition given in ''The Science of Discworld'' is as follows: "A lie-to-children is a statement that is false, but which nevertheless leads the child's mind towards a more accurate explanation, one that the child will only be able to appreciate if it has been primed with the lie". The authors acknowledge that some people might dispute the applicability of the term ''lie'', while defending it on the grounds that "it is for the best possible reasons, but it is still a lie". The reference to children seems at first to be literal, as the authors use different phrases for cases that involve adult audiences (for example they say of themselves "we belong to another, equally honorable profession: Liar-to-readers"). Later in the book, however, the term "lie-to-children" is used to include all examples of the pedagogical strategy, without reference to the age or composition of the audience. This inclusive usage can be understood as a metonymic extension of the literal sense, or as a self-demonstration, the early definition being a lie-to-children itself, implicitly refined to the "more accurate explanation" by its broader use later. 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「Lie-to-children」の詳細全文を読む スポンサード リンク
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