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Upward Spiral
Upward Spiral is a term used by Paul Kennedy in his book ''The Rise and Fall of Great Powers'' to describe the continually rising cost of military equipment relative to civilian manufactured goods. According to Kennedy there is an upward spiral at work in "all areas" of military production which is "becoming increasingly divergent from the commercial". The desire for state-of-the-art weaponry is meant to be pushing up the cost.〔Kennedy, 1989, pp. 570-1.〕
==Theory==
Writing in the late 1980s he said it was reasonable to assume that the next few decades would witness "the spiralling cost of the arms race, which is fuelled by the sheer expensiveness of newer weapons systems as well as by international rivalries."〔 Quoting the comment of Peter Mathias that "One of the few constancies in history... is that the scale of commitment on military spending has always risen"〔Mathias, 1969, p. 44.〕 Kennedy argues that this has become more important with time. According to Kennedy, "if that was true for the wars and arms races of the eighteenth century, when weapons technology changed only slowly, it is much truer of the present century (), when each new generation of aircraft, warships and tanks is vastly more expensive than preceding ones, even when allowance is made for inflation."〔Kennedy, 1989, p. 570.〕 Kennedy uses several examples. While a pre-1914 battleship cost the British admiralty 2.5 million pounds ( Taking inflation into account this would be approximately 56 million pounds in 1980 terms), by the 1980s 120 million pounds was needed to buy a replacement frigate. Another is that of the American B-2 Spirit Stealth bomber whose cost rose into the 1990s.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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