The European: There’s the slipperyslopeargument: Once we decide to pursue human enhancements with a certain determination, we have less control over the limits of these enhancements.
《欧洲人》:有这样一个滑坡论证:一旦我们下定决心谋求人类提升,限制提升的控制力就会被削弱。
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The complaint that this is the first step on the road to "designer babies" is as weak as any other slippery-slopeargument: approving one procedure does not mean automatically approving others.