Abstract What if science enabled us to live an extended lifespan? Well, not us, but people in the future, and perhaps not everybody in the future, at least not at first. Should we allow and encourage science to develop this capability, or should we try to prevent or inhibit it? John Davis's book New Methuselahs: The Ethics of Life Extension is a thorough exploration of these questions. He presents the arguments for and against developing this capacity, and he considers three perspectives: those of individuals who will be able to extend their lives (the Haves), individuals who will not because they can't afford to (the Have‐nots), and individuals who will not extend their lives because they are opposed to doing so (the Will‐nots). Davis is a philosopher, and the bulk of this book is for the cognoscenti .
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机译：摘要如果科学使我们能够延长寿命，那么什么呢？ 好吧，不是我们，但未来的人，也许不是未来的每个人，至少不是起初。 我们应该允许和鼓励科学发展这种能力，还是应该试图预防或抑制它？ John Davis的预订新甲基汞：生活延伸的道德是对这些问题的彻底探索。 他呈现出于发展这种能力的论点，他考虑了三个观点：那些将能够扩大生命（留住人）的个人，那些不会因为他们不能负担不起（HAT） 而且，他们不会延长自己的生活，因为他们反对这样做（意志不是）。 戴维斯是哲学家，这本书的大部分是针对Cognoscenti。
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