Caffeine isn't a blanket solution to all your cognitive needs, but it can have a significant impact on your mental performance.

咖啡因不能包治百症地满足你所有的认知需求，但可以对你的精神表现产生重大影响。

But our behavior ultimately is directed by hundreds of physiological and probably dozens of social and a few cognitive needs.

但我们的行为最终是由数百种生理需求、可能是数十种社交需求和一些认知需求决定的。