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Thought can refer to the ideas or arrangements of ideas that result from thinking, the act of producing thoughts, or the process of producing thoughts. Although thought is a fundamental human activity familiar to everyone, there is no generally accepted agreement as to what thought is or how it is created. Somehow, thoughts arise in the mind from the product of subconscious brain processing. Because thought underlies many human actions and interactions, understanding its physical and metaphysical origins, processes, and effects has been a longstanding goal of many academic disciplines including psychology, neuroscience, philosophy, artificial intelligence, biology, sociology and cognitive science. Thinking allows humans to make sense of, interpret, represent or model the world they experience, and to make predictions about that world. It is therefore helpful to an organism with needs, objectives, and desires as it makes plans or otherwise attempts to accomplish those goals. ==Etymology and usage== The word ''thought'' comes from Old English ''þoht'', or ''geþoht'', from stem of ''þencan'' "to conceive of in the mind, consider". The word "thought" may mean〔Random House Webster's Unabridged Dictionary, Second Edition, 2001, Published by Random House, Inc., ISBN 978-0375425998, page 1975〕,:〔Webster's II New College Dictionary, Webster Staff, Webster, Houghton Mifflin Company, Edition: 2, illustrated, revised Published by Houghton Mifflin Harcourt, 1999, ISBN 978-0-395-96214-5, page 1147〕 * a single product of thinking or a single idea ("My first thought was ‘no.’") * the product of mental activity ("Mathematics is a large body of thought.") * the act or process of thinking ("I was frazzled from too much thought.") * the capacity to think, reason, imagine, etcetera ("All her thought was applied to her work.") * the consideration of or reflection on an idea ("The thought of death terrifies me.") * recollection or contemplation ("I thought about my childhood.") * half-formed or imperfect intention ("I had some thought of going.") * anticipation or expectation ("She had no thought of seeing him again.") * consideration, attention, care, or regard ("He took no thought of his appearance" and "I did it without thinking.") * judgment, opinion, or belief ("According to his thought, honesty is the best policy.") * the ideas characteristic of a particular place, class, or time ("Greek thought") * the state of being conscious of something ("It made me think of my grandmother.") * tending to believe in something, especially with less than full confidence ("I think that it will rain, but I am not sure.") Definitions may or may not require that thought * take place within a human brain (see anthropomorphism), * take place as part of a living biological system (see Alan Turing and Computing Machinery and Intelligence), * take place only at a conscious level of awareness (see Unconscious Thought Theory), * require language, * is principally or even only conceptual, abstract ("formal"), * involve other concepts such as drawing analogies, interpreting, evaluating, imagining, planning, and remembering. Definitions of thought may also be derived directly or indirectly from theories of thought. 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「thought」の詳細全文を読む スポンサード リンク
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