你对世界的认知程度如何：全球健康问题，历史，婴儿死亡率和碳排放量？
How well do you know the world: global health issues, history, infant mortality rates and carbon emissions?
如果说精神的时间旅行有着显而易见的生存优势，人类却为有意识的前瞻付出高昂的代价——对死亡终将降临的认知。
While mental time travel has clear survival advantages, conscious foresight came to humans at an enormous price - the understanding that somewhere in the future, death awaits.
加州大学圣地亚哥分校的生物学家阿吉特·瓦奇论述道：对自身死亡之必然的认知，会将进化引入死胡同。
Ajit Varki, a biologist at the University of California, San Diego, argues that the awareness of mortality on its own would have led evolution to a dead end.
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