ラチェット効果

生活レベルを上げるともとに戻しにくい

人間は何かが起きたら元に戻すということがやりづらい

In sociology, "Ratchet effects refer to the tendency for central controllers to base next year's targets on last year's performance, meaning that managers who expect still to be in place in the next target period have a perverse incentive not to exceed targets even if they could easily do". (Bevan and Hood 2006, p. 521)

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