The more important goal is using interactive learning to discover the cause of the decline and compare it to issues we face today—natural disasters, environmental problems, and war.
Environmental issues such as noise and level of alertness may interfere with learning new behaviors.
环境问题诸如噪音和警戒的水平也许会妨碍新行为的学习。
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Environmental issues such as noise and level of alertness may interfere with learning new behaviors. After identifying what helps and what hinders, increase the helpers and eliminate the rest.