Deontology at the Threshold 门槛*
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=253676Deontologists believe that agents are morally constrained 受限 in ways that preclude 排除 always being able to maximize good consequences and minimize bad ones. For example, deontologists would deny 拒绝 that one is morally permitted to torture an innocent person, even if doing so will save three other innocent persons from torture.
On the other hand, most deontologists concede 承认 that if the good or bad consequences of violating these deontological restrictions become sufficiently weighty, the restrictions give way and the agent is morally permitted to act as a consequentialist. The point at which consequences overcome the deontological restrictions is the deontological threshold, and those deontologists who think there is such a threshold -- for example, Michael Moore, Thomas Nagel, and Robert Nozick -- are threshold deontologists.
Threshold deontology has been almost completely neglected in the deontological literature. In this article, I examine aspects of threshold deontology, in particular pointing out peculiarities attributable to the presence of any deontological threshold, and raising a general question, previously raised by Anthony Ellis, of whether such a threshold can be rationally defended.
门槛*
（1）[threshold；sill]：门框下端的横木条、石条或金属条。
（2）[key]：诀窍，也指精打细算或占便宜的本领。门槛精道。
（2）[difficulty]：指一件事的难点。
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