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General-purpose technologies (GPTs) are technologies that can affect an entire economy (usually at a national or global level). GPTs have the potential to drastically alter societies through their impact on pre-existing economic and social structures. Examples include the steam engine, railroad, interchangeable parts, electricity, electronics, material handling, mechanization, control theory (automation), the automobile, the computer, and the Internet. ==Lag== The introduction of a new GPT to an economy may, before improving productivity, actually decrease it: * The obsolescence of old technologies and skills * Learning costs * Time required for development of new infrastructure * Readjustment of labor to new industries, causing temporary unemployment This initial inability to exploit the benefits of the new technology is known as the Solow Paradox. 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「general purpose technology」の詳細全文を読む スポンサード リンク
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