In fact, a""answer today may well turn out to be a "poor answer tomorrow if there is a growth of knowledge during the period or if there are other structural or societal changes 实际上,如果某段期间的知识在增长变化,或 存在其它的结构变化或社会变化,今天的“好” 的答案,到明天就可能是“坏”的答案。In fact，a “good” answer today may well turn out to be a “poor” answer tomorrow， if there is a growth of knowledge during the period or if there are other structural or societal changes. 实际上，如果某段期间的知识在增长变化，或 存在其它的结构变化或社会变化，今天的“好” 的答案，到明天就可能是“坏”的答案