来自《耶鲁大学开放课程：心理学导论 第11集》

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  a person is just a germ's way of making other germs.
  人只是病菌制造另一个病菌的媒介而已
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  And there's tons of other examples of this.
  像这样的例子太多了
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  There's a parasite known as toxoplasmosis
  有一种寄生虫叫弓形虫
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  that lives in the bodies of rats.
  它寄生在老鼠的身体里
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  But it gets passed on when the rats get eaten by cats.
  但它在老鼠被吃掉的时候传播到了猫身上
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  And then it ends up in the cats' feces
  然后它遗留在猫的粪便里
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  and then it ends up back in rats.
  从而传播回给老鼠
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  If you are a rat and you have toxoplasmosis,
  如果你是只老鼠并且你有弓形虫病的话
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  you are perfectly healthy except for one thing.
  你会非常健康 只有一件事例外
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  The toxoplasmosis rewires your brain
  弓形虫重新设计了你的大脑
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  and it makes you less afraid of cats.
  然后它让你没那么怕猫了
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  Now, again,
  现在 再一次的